U.S. Expansion of Terrorist Designation Authorities Under the Second Trump Administration

ABSTRACT

The United States employs two primary legal instruments to combat terrorism through designations: Foreign Terrorist Organizations (FTOs) under Section 219 of the Immigration and Nationality Act, administered by the Department of State, and Specially Designated Global Terrorists (SDGTs) under Executive Order 13224, administered by the Department of the Treasury. These tools impose asset freezes, transaction prohibitions, and, in the case of FTOs, trigger the material support statute (18 U.S.C. § 2339B), which criminalizes provision of resources to designated entities. As of December 2025, the FTO list maintained by the Department of State includes organizations meeting statutory criteria: foreign origin, engagement in terrorist activity, and threat to U.S. nationals or national security Foreign Terrorist Organizations – U.S. Department of State – December 2025.

This monograph examines the second Trump administration’s application of these authorities since January 2025, marking a notable expansion beyond traditional subnational terrorist groups. President Donald J. Trump assumed office on January 20, 2025, and promptly initiated processes to designate transnational criminal organizations, select violent anarchist entities, and review chapters of the Muslim Brotherhood. These actions build on precedents such as the 2019 designation of Iran’s Islamic Revolutionary Guard Corps (IRGC) as an FTO, the first application to a state instrumentality Designation of the Islamic Revolutionary Guard Corps – U.S. Department of State – April 2019.

Methodology relies exclusively on live-verified primary sources from official U.S. government domains, including executive orders, designation announcements, and statutory texts published on state.gov, treasury.gov, and whitehouse.gov as of December 24, 2025. Quantitative claims draw from at least two independent official releases where available. Key findings reveal four major expansions in 2025: designations of eight Latin American criminal organizations as FTOs and SDGTs in February; SDGT designations (with intent for FTO) of four European anarchist groups in November; a domestic executive designation of Antifa in September; and an ongoing review process for select Muslim Brotherhood chapters initiated in November. These steps extend designation tools to transnational crime, decentralized ideologies, domestic movements, and fragmented Islamist networks.

Implications include enhanced financial disruption capabilities but raised challenges to statutory coherence, prosecutorial focus, and international alliances. Designations of drug cartels, for instance, integrate counter-narcotics into counterterrorism frameworks, enabling material support prosecutions against traffickers Terrorist Designations of International Cartels – U.S. Department of State – February 2025. Similarly, the Muslim Brotherhood review targets national chapters in Egypt, Jordan, and Lebanon without encompassing the broader movement, reflecting evidentiary constraints and geopolitical considerations Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025. As of December 24, 2025, no final designations have occurred for Muslim Brotherhood entities, and Hamas remains the sole designated branch since October 8, 1997.

These developments strain institutional resources trained on traditional threats, potentially inviting judicial scrutiny over organizational definability and First Amendment protections in domestic contexts. Overall, the administration prioritizes disruptive sanctions over diplomatic nuance, aligning with a broader national security strategy emphasizing maximum pressure on hybrid threats.

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Table of Contents

• U.S. Expansion of Terrorist Designation Authorities Under the Second Trump Administration
• Historical Precedents: The 2019 IRGC Designation
• 2025 Expansions: Transnational Criminal Organizations as FTOs
• Targeting Decentralized Violent Ideologies: Anarchist Groups and Domestic Antifa
• The Muslim Brotherhood Review: Fragmented Approach to a Transnational Movement
• Prosecutorial, Diplomatic, and Statutory Implications

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Core Concepts in Review: What We Know and Why It Matters

The United States relies on two primary legal tools to combat terrorism through designations that isolate threats financially and criminally. Foreign Terrorist Organizations (FTOs) fall under the Department of State‘s authority via section 219 of the Immigration and Nationality Act, requiring proof that a group is foreign, engages in terrorist activity, and threatens U.S. nationals or national security. Once designated, providing material support becomes a federal crime, assets are blocked, and members face immigration bars.

Foreign Terrorist Organizations – U.S. Department of State – December 2025

Complementing this, Specially Designated Global Terrorists (SDGTs) stem from Executive Order 13224, administered by the Department of the Treasury, focusing on freezing assets and prohibiting transactions to disrupt financing networks.

These mechanisms gained new reach in 2025. The administration designated major transnational criminal groups—such as Tren de Aragua, Mara Salvatrucha (MS-13), Cártel de Sinaloa, Cártel de Jalisco Nueva Generación, Cártel del Noreste, La Nueva Familia Michoacana, Cártel de Golfo, and Cárteles Unidos—as both FTOs and SDGTs starting in February.

Terrorist Designations of International Cartels – U.S. Department of State – February 2025 – Designation of International Cartels – U.S. Department of State – May 2025

This move recognized that these organizations employ systematic violence, including assassinations and attacks on civilians, to control territory and trafficking routes, often mirroring traditional terrorist tactics while fueling crises like fentanyl overdoses in the United States.

Later additions included Haitian gangs, Ecuadorian groups like Los Choneros and Los Lobos, Colombian Clan del Golfo, and Venezuelan Cartel de los Soles, reflecting a broader strategy to treat hybrid criminal-terror threats with full counterterrorism powers.

The precedent for stretching designations began earlier. In April 2019, the Islamic Revolutionary Guard Corps (IRGC), a branch of Iran’s armed forces, became the first state entity labeled an FTO, due to its support for proxies conducting attacks worldwide.

Designation of the Islamic Revolutionary Guard Corps – U.S. Department of State – April 2019

This step showed that evidentiary records of terrorist activity could override conventional distinctions between state militaries and non-state actors.

In November 2025, the administration targeted decentralized violent extremism by designating four European anarchist groups—Antifa Ost, Informal Anarchist Federation/International Revolutionary Front, Armed Proletarian Justice, and Revolutionary Class Self-Defense—as SDGTs with FTO status effective November 20.

Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025

These listings focused on documented bombing campaigns and assaults, distinguishing operational cells from broader ideological movements.

A separate domestic classification applied to the wider Antifa network in September 2025, enhancing investigative tools without invoking foreign-focused statutes.

For the Muslim Brotherhood, a November 24, 2025, executive order launched a targeted review of chapters in Lebanon, Jordan, and Egypt for possible FTO and SDGT status, emphasizing granular evidence of terrorist support rather than blanket application to the decentralized movement.

Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

Fact Sheet: President Donald J. Trump Begins Process to Designate Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

Hamas remains the only designated affiliate since 1997.

These expansions carry weighty implications. Prosecutors now apply material support laws to supporters of cartels and anarchist cells, integrating counternarcotics expertise into national security divisions. Diplomatically, designations encourage allies to align restrictions while complicating partnerships in regions where threats blend crime and ideology. Statutorily, they test organizational definability and intent requirements, preserving safeguards like administrative records and judicial review.

At their core, these tools aim to deny resources to threats evolving beyond traditional jihadist models. By December 2025, the FTO list reflects this shift, incorporating profit-driven syndicates and ideological extremists alongside longstanding entries.

The approach signals a policy prioritizing disruption of hybrid violence—whether fueled by drugs, anarchy, or selective Islamist extremism—through calibrated legal pressure. For policymakers, the key takeaway is straightforward: designations work when anchored in evidence, but overextension risks diluting their precision and international credibility.

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U.S. Expansion of Terrorist Designation Authorities Under the Second Trump Administration

The United States administers terrorist designations through two distinct yet complementary legal authorities that enable the disruption of terrorist activities by isolating designated entities from financial systems, imposing criminal liabilities, and restricting immigration. The Department of State designates Foreign Terrorist Organizations (FTOs) pursuant to section 219 of the Immigration and Nationality Act, as amended, requiring satisfaction of three statutory criteria: the entity constitutes a foreign organization; the organization engages in terrorist activity, as defined in section 212(a)(3)(B) of the Act, or retains the capability and intent to engage in such activity; and the terrorist activity threatens the security of United States nationals or the national security of the United States, encompassing defense, foreign relations, or economic interests.

Foreign Terrorist Organizations – U.S. Department of State – December 2025

Because the designation process demands compilation of a comprehensive administrative record drawn from classified and unclassified sources demonstrating fulfillment of these criteria, the Secretary of State consults with the Attorney General and the Secretary of the Treasury before notifying Congress seven days prior to publication in the Federal Register, at which point the designation becomes effective and triggers immediate consequences. FTO status activates the material support prohibition under 18 U.S.C. § 2339B, rendering it unlawful for persons subject to United States jurisdiction to knowingly provide material support or resources—defined broadly to include currency, training, expert advice, safe houses, false documentation, weapons, or personnel—to the designated organization, with exceptions limited to medicine and religious materials. Financial institutions holding funds in which a designated FTO possesses an interest must block those assets and report them to the Office of Foreign Assets Control within the Department of the Treasury. Representatives and certain members of the FTO face inadmissibility to the United States under immigration provisions.

The second primary authority stems from Executive Order 13224, issued on September 23, 2001, which empowers the Department of the Treasury, in consultation with the Department of State and the Attorney General, to designate individuals and entities as Specially Designated Global Terrorists (SDGTs) if they commit, threaten to commit, or support acts of terrorism that imperil United States nationals or national security. This executive authority, grounded in the International Emergency Economic Powers Act, imposes asset freezes on property subject to United States jurisdiction and prohibits United States persons from engaging in transactions with designated parties, with violations enforceable through civil and criminal penalties distinct from the material support statute.

Executive Order 13224 – U.S. Department of State – December 2025

Because Executive Order 13224 focuses on financial disruption without requiring the foreign organization criterion central to FTO designations, it permits broader application to supporters, front companies, and facilitators, while amendments such as Executive Order 13886 in 2019 introduced secondary sanctions risks for foreign financial institutions knowingly conducting significant transactions with SDGTs. The Department of State frequently applies both authorities concurrently to maximize pressure, as evidenced by dual designations that combine criminal prosecution potential under the material support statute with immediate economic isolation.

The FTO framework traces its origins to the Antiterrorism and Effective Death Penalty Act of 1996, enacted in response to growing threats from groups conducting attacks affecting United States interests abroad. Congress crafted the designation process to balance evidentiary rigor with operational flexibility, mandating periodic reviews every five years under the Intelligence Reform and Terrorism Prevention Act of 2004, which replaced biennial redesignation requirements with revocation procedures allowing petitions after two years if material circumstances change. Judicial review resides exclusively in the United States Court of Appeals for the District of Columbia Circuit, where designated entities may challenge the administrative record within thirty days of Federal Register publication.

In parallel, Executive Order 13224 emerged directly from the national emergency declared following the September 11, 2001 attacks, expanding preexisting sanctions tools to target global terrorist financing networks beyond subnational groups. The order’s breadth enables designations of entities providing material support or acting as proxies, creating a layered sanctions architecture where FTO status supplies prosecutorial leverage through the material support statute—upheld against constitutional challenges in Holder v. Humanitarian Law Project (2010)—while SDGT listings deliver swift financial strangulation.

Recent applications illustrate the interplay between these authorities. On February 20, 2025, the Department of State designated eight transnational criminal organizations, including Tren de Aragua, Mara Salvatrucha (MS-13), Cártel de Sinaloa, Cártel de Jalisco Nueva Generación, Cártel del Noreste, La Nueva Familia Michoacana, Cártel de Golfo, and Cárteles Unidos, simultaneously as FTOs and SDGTs, thereby enabling both asset blocking and potential material support prosecutions against supporters.

Terrorist Designations of International Cartels – U.S. Department of State – February 2025

Similarly, on November 13, 2025, the Department of State designated four European-based anarchist entities—Antifa Ost, Informal Anarchist Federation/International Revolutionary Front, Armed Proletarian Justice, and Revolutionary Class Self-Defense—as SDGTs, with intent to finalize FTO status effective November 20, 2025, reflecting evidentiary thresholds met for transnational violent extremism.

Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025

Because dual designations amplify disruptive effects by combining immigration barriers and criminal liabilities with financial sanctions, they represent the preferred approach when statutory criteria align. The precedent of designating the Islamic Revolutionary Guard Corps in April 2019 as an FTO—the first instance applying the label to a state instrumentality—demonstrated that the foreign organization requirement accommodates governmental components when they engage in terrorism, provided the administrative record substantiates direct involvement in or support for terrorist acts.

The material support statute, codified at 18 U.S.C. § 2339B, functions as the primary criminal enforcement mechanism tethered exclusively to FTO designations, requiring proof that the defendant knowingly provided support to a listed organization with awareness of its designation or terrorist activities. Prosecutions under this provision dominate contemporary terrorism cases in United States federal courts, leveraging the designation as an anchoring element that shifts evidentiary burdens and enables use of classified information procedures. In contrast, SDGT violations arise under sanctions regulations, focusing on transactional prohibitions without necessitating proof of intent to further terrorism.

Revocation pathways ensure adaptability. The Secretary of State may revoke FTO status upon determining that circumstances no longer warrant designation or that national security interests justify removal, with similar flexibility for SDGT delistings. These mechanisms prevent indefinite listings absent ongoing justification, while preserving liability for pre-revocation conduct.

Interagency coordination underpins reliability. The Bureau of Counterterrorism within the Department of State leads FTO processes, drawing intelligence assessments that inform the administrative record. The Office of Foreign Assets Control executes blocking orders and maintains the consolidated Special Designated Nationals list integrating SDGTs with other sanctions categories. This division of labor ensures designations rest on robust evidence while enabling rapid financial responses.

The authorities collectively stigmatize designated entities internationally, encouraging allied nations to impose parallel restrictions and complicating operational sustainability. Because designations signal United States policy priorities, their expansion into hybrid threats—transnational crime fused with terrorist tactics—reflects evolving threat landscapes where violence serves both ideological and profit-driven ends.

Hamas exemplifies enduring application, designated as an FTO on October 8, 1997, following attacks killing United States nationals, with the label anchoring decades of prosecutions and sanctions. No other Muslim Brotherhood-affiliated entity has received FTO status, though an Executive Order issued November 24, 2025, directed the Secretary of State and Secretary of the Treasury to evaluate specific national chapters in Egypt, Jordan, and Lebanon for potential designation within prescribed timelines.

Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

The legal architecture thus provides calibrated instruments: FTO status maximizes criminal and immigration consequences against core organizations, while SDGT listings extend financial pressure to peripheral networks. Combined employment, as in 2025 cartel and anarchist designations, generates comprehensive isolation. Statutory safeguards—evidentiary records, congressional notification, judicial review—preserve coherence amid expansions that test traditional boundaries between terrorism and transnational crime.

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Historical Precedents: The 2019 IRGC Designation

The United States expanded the scope of Foreign Terrorist Organization (FTO) designations beyond traditional subnational groups when the Department of State listed the Islamic Revolutionary Guard Corps (IRGC), including its Qods Force, as an FTO effective April 15, 2019. The Secretary of State announced the intent on April 8, 2019, marking the first application of section 219 of the Immigration and Nationality Act to an official instrumentality of a foreign government. The administrative record documented the IRGC‘s direct provision of financial resources, training, advanced weapons, and operational direction to multiple designated terrorist organizations, including Hizballah, Hamas, Palestinian Islamic Jihad, Kata’ib Hizballah, and al-Ashtar Brigades.

Designation of the Islamic Revolutionary Guard Corps – U.S. Department of State – April 2019

Because the IRGC functions as a branch of the Iranian armed forces while simultaneously orchestrating extraterritorial terrorist campaigns, the designation bridged the statutory requirement for a foreign organization with the reality of state-sponsored terrorism, establishing that governmental entities qualify when they engage in or support terrorist activity threatening United States nationals or national security. The IRGC had received Specially Designated Global Terrorist status under Executive Order 13224 in October 2017 for supporting the Qods Force, which itself carried the designation since 2007, yet the 2019 FTO listing introduced criminal material support liability under 18 U.S.C. § 2339B for knowing provision of resources to any IRGC component.

The decision originated from escalating Iranian proxy attacks against United States forces and allies in Iraq and Syria, where IRGC-backed militias employed explosively formed penetrators responsible for hundreds of American casualties between 2003 and 2011. The Qods Force coordinated these operations, supplying weapons and guidance that extended to Yemen, Bahrain, and the Gulf region. Because the IRGC integrated terrorist support into its official mandate—distinct from covert intelligence agencies—the designation avoided complications associated with labeling entire states while targeting the primary mechanism of Iranian malign influence.

Congressional notification preceded Federal Register publication, satisfying procedural requirements without legislative blockage. The designation complemented existing sanctions under multiple executive orders addressing proliferation and human rights abuses, amplifying pressure through immigration inadmissibility for IRGC members and representatives. Financial institutions faced immediate blocking obligations for IRGC-related assets under United States jurisdiction.

Prosecutorial effects emerged rapidly. Federal courts gained authority to charge individuals providing material support to the IRGC, extending the reach of 18 U.S.C. § 2339B beyond non-state actors. Because the IRGC controls significant segments of the Iranian economy, the listing complicated commercial transactions involving Iranian entities with IRGC ties, prompting risk assessments across global banking networks.

International reactions varied. Allied governments acknowledged the evidentiary basis yet expressed concerns over diplomatic channels with Tehran. The designation reinforced United States maximum pressure policy, signaling intolerance for state entities employing terrorism as statecraft. Because the IRGC retained conventional military functions, the action tested boundaries between counterterrorism and interstate conflict, raising questions about reciprocal designations or operational constraints on United States forces engaging IRGC personnel.

The precedent influenced subsequent debates over applying FTO criteria to hybrid actors blending state authority with terrorist methods. The IRGC case demonstrated that robust administrative records documenting terrorist activity override traditional distinctions between governmental and subnational entities. This expansion laid groundwork for later designations addressing transnational threats where violence serves both ideological and strategic state objectives.

The Department of State emphasized that the IRGC‘s terrorist conduct—distinct from the regular Iranian military—justified the listing, preserving diplomatic space while isolating the offending component. The designation endured through administrative reviews, reflecting sustained fulfillment of statutory criteria.

Because the IRGC designation activated the full suite of FTO consequences, including material support prosecutions and financial blocking, it provided a template for layering criminal and sanctions tools against complex adversaries. The action underscored the flexibility of designation authorities when anchored in verifiable evidence of terrorist support threatening United States interests.

2025 Expansions: Transnational Criminal Organizations as FTOs

The United States executed the most significant broadening of Foreign Terrorist Organization (FTO) designations in February 2025 when the Department of State simultaneously listed eight transnational criminal entities as both FTOs and Specially Designated Global Terrorists (SDGTs), integrating counter-narcotics enforcement into the core counterterrorism framework for the first time at this scale. The designated organizations include Tren de Aragua, Mara Salvatrucha (MS-13), Cártel de Sinaloa, Cártel de Jalisco Nueva Generación, Cártel del Noreste, La Nueva Familia Michoacana, Cártel de Golfo, and Cárteles Unidos, with the administrative records emphasizing their systematic employment of terrorist tactics—kidnappings, extortions, assassinations, and attacks on civilian populations and government officials—to maintain territorial control and facilitate illicit trafficking threatening United States national security.

Terrorist Designations of International Cartels – U.S. Department of State – February 2025

Designation of International Cartels – U.S. Department of State – February 2025

Because these entities originated as profit-driven criminal syndicates yet evolved to deploy violence indistinguishable from traditional terrorist methods, the designations rested on evidence that their activities fulfill statutory criteria under section 219 of the Immigration and Nationality Act: foreign origin, engagement in terrorist activity with retained capability and intent, and direct threats to United States nationals through fentanyl distribution and migrant smuggling networks. The process originated directly from Executive Order 14157, signed January 20, 2025, which mandated rapid recommendations for designating cartels and aligned organizations, resulting in the February 20 announcements that activated immediate asset blocking, transaction prohibitions, and material support criminal liability.

Designating Cartels And Other Organizations As Foreign Terrorist Organizations And Specially Designated Global Terrorists – The White House – January 2025

Tren de Aragua exemplifies the hybrid threat model justifying inclusion. This Venezuela-originated group expanded cells across South America and into United States communities, conducting kidnappings, extortions, and murders while trafficking drugs and humans, with documented attacks authorizing violence against United States interests. Mara Salvatrucha (MS-13), long active in Central America and United States urban areas, employs similar tactics of targeted killings and territorial enforcement through terror. Mexican-based cartels dominate fentanyl production and distribution: Cártel de Sinaloa remains one of the largest suppliers of illicit opioids entering the United States, while Cártel de Jalisco Nueva Generación rivals it in scale and violence, including attacks on law enforcement and public officials.

Cártel del Noreste, successor to Los Zetas, controls northeastern trafficking corridors through extortion and migrant smuggling. La Nueva Familia Michoacana and Cárteles Unidos operate in Michoacán, engaging in armed confrontations resulting in civilian casualties and disruptions to governance. Cártel de Golfo maintains influence in Gulf coast regions via similar methods. Because fentanyl overdose deaths constitute the leading cause of mortality for Americans aged 18-49, the administrative records traced direct causal links from these organizations’ production and distribution chains to United States public health and security threats.

Dual FTO and SDGT status layered comprehensive pressure. FTO listing triggered 18 U.S.C. § 2339B applicability, enabling federal prosecutions for material support—including financial contributions, recruitment, or logistical aid—handled by specialized national security prosecutors with access to classified procedures. SDGT designation imposed immediate financial isolation, requiring United States financial institutions to block assets and report holdings, while prohibiting transactions under International Emergency Economic Powers Act penalties.

International Cartels Designated as Foreign Terrorist Organizations and Specially Designated Global Terrorists – Office of Foreign Assets Control – March 2025

Subsequent actions reinforced the initial wave. Reward offers escalated for leaders of designated entities, such as increased bounties under the Transnational Organized Crime Rewards Program for Tren de Aragua figures involved in narcotics and violence. Sanctions targeted factions and networks: Los Chapitos faction of Cártel de Sinaloa faced individual designations for fentanyl trafficking, while high-ranking members of Cártel del Noreste received blocking orders following arrests linked to attacks on United States interests.

Later 2025 designations built on this foundation. Barrio 18 joined the list in September for attacks across Central America. Ecuadorian groups Los Choneros and Los Lobos followed in December due to links with Mexican FTOs and violence against officials. Colombian Clan del Golfo received designation December 17 for comparable activities. Venezuelan Cartel de los Soles entered November 24, reflecting state-linked narco-terrorism.

Foreign Terrorist Organizations – U.S. Department of State – December 2025

These expansions shifted institutional resources. Prosecutions for material support to cartel FTOs required integration of counter-narcotics intelligence into national security channels, straining capacities historically focused on ideological threats. Because many designated entities pre-existed on narcotics-specific sanctions lists, the overlay added criminal dimensions without duplicating financial restrictions for most, yet introduced immigration inadmissibility for members and representatives.

Diplomatic ramifications emerged rapidly. Partner nations in Latin America faced pressure to align restrictions, complicating bilateral law enforcement cooperation previously framed under extradition treaties rather than counterterrorism protocols. The designations stigmatized these groups globally, facilitating coordinated asset seizures and intelligence sharing while signaling United States prioritization of hybrid threats blending profit motives with terrorist tactics.

Prosecutorial implications proved immediate. Indictments incorporated material support charges alongside traditional narcotics counts, enabling higher penalties and specialized handling. For instance, individuals linked to Tren de Aragua faced re-indictments adding FTO support violations post-designation. Reward programs expanded, offering millions for information leading to arrests of leaders across designated cartels.

Because the designations rested on evidence of terrorist activity rather than solely drug trafficking, administrative records distinguished violence employed for ideological ends from that sustaining criminal enterprise, yet emphasized functional equivalence in threatening United States security. This evidentiary threshold enabled inclusion of organizations historically viewed through law enforcement lenses, transforming counter-narcotics operations into counterterrorism missions with expanded authorities.

Financial institutions adjusted compliance programs to encompass FTO-specific reporting and blocking, layering atop existing narcotics sanctions. Secondary sanctions risks increased for foreign entities facilitating significant transactions with designated cartels. The cumulative effect denied these organizations access to formal banking channels, forcing reliance on informal networks vulnerable to further disruption.

The 2025 cartel designations marked a doctrinal pivot, recognizing that transnational criminal violence at scale constitutes a national security threat warranting the full counterterrorism toolkit. By anchoring designations in statutory criteria fulfilled through documented terrorist acts, the administration preserved legal coherence while extending tools originally crafted for subnational insurgents to profit-driven syndicates employing equivalent methods.

Subsequent listings throughout the year—encompassing additional gangs and cartels—consolidated this approach, integrating hemispheric criminal threats into the FTO framework. The expansions amplified disruptive capacity through criminal prosecutions, financial isolation, and international stigma, while testing institutional adaptation to hybrid adversaries.

Targeting Decentralized Violent Ideologies: Anarchist Groups and Domestic Antifa

The United States extended terrorist designation authorities to decentralized anarchist networks in November 2025 when the Department of State listed four European-based entities—Antifa Ost (Germany), Informal Anarchist Federation/International Revolutionary Front (Italy), Armed Proletarian Justice (Greece), and Revolutionary Class Self-Defense (Greece)—as Specially Designated Global Terrorists (SDGTs) effective immediately, while finalizing Foreign Terrorist Organization (FTO) status on November 20, 2025. The administrative records documented repeated improvised explosive device attacks, targeted assaults, and claims of responsibility for bombings against government and economic targets across Europe, fulfilling statutory criteria through foreign origin, sustained terrorist activity, and threats extending to United States interests via transnational ideological propagation.

Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025

Terrorist Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025

Because these groups operate within loosely affiliated anarchist movements employing violence to advance anti-capitalist and anti-state objectives, the designations tested the boundaries of organizational definability required for FTO listing, relying on evidence of structured cells conducting coordinated attacks rather than fluid protest networks. Antifa Ost conducted assaults on perceived right-wing individuals in Germany from 2018 through 2023, with accusations of cross-border operations in Budapest in February 2023; Hungary independently designated the group domestically on September 26, 2025. Informal Anarchist Federation/International Revolutionary Front maintained affiliates across Europe and beyond, advocating armed struggle against state structures. Armed Proletarian Justice executed attempted and successful improvised explosive device attacks on Greek government targets. Revolutionary Class Self-Defense claimed two bombings in 2024 and 2025 against the Greek Ministry of Labor and Hellenic Train offices, linking actions to opposition against capitalist repression and solidarity with international causes.

Dual SDGT and FTO application imposed comprehensive restrictions. SDGT status activated immediate asset blocking and transaction prohibitions under Executive Order 13224, while FTO designation triggered material support criminal liability under 18 U.S.C. § 2339B and immigration inadmissibility. Because the groups lack centralized financial infrastructures comparable to traditional terrorist entities, primary effects centered on isolating international supporters and complicating cross-border coordination.

The designations aligned with broader policy shifts. An executive action on September 22, 2025, separately classified the broader Antifa movement as a domestic terrorist organization, directing federal agencies to investigate and disrupt operations involving political violence without invoking FTO or SDGT authorities, which remain statutorily limited to foreign threats.

Designating Antifa as a Domestic Terrorist Organization – The White House – September 2025

This domestic classification bypassed Immigration and Nationality Act requirements for foreign origin, focusing investigative priorities on coordinated intimidation and coercion suppressing lawful activity. A subsequent National Security Presidential Memorandum reinforced interagency efforts to counter organized political violence, including recommendations for additional domestic designations where evidentiary thresholds align with 18 U.S.C. § 2331 definitions.

The European anarchist listings marked the first explicit application of designation tools to entities self-identifying with anti-fascist violent extremism. Administrative records distinguished these groups from broader protest movements by documenting sustained campaigns of bombings and assaults threatening democratic institutions. Because anarchist networks operate through autonomous cells claiming actions post-facto, evidentiary compilation emphasized patterns of responsibility claims and operational continuity sufficient to satisfy organizational criteria.

Prosecutorial implications emerged cautiously. FTO status enabled material support charges against individuals knowingly aiding the designated European entities, extending national security division expertise to transnational anarchist support cases. Domestic Antifa classification, lacking direct linkage to material support statutes, directed enhanced application of existing federal crimes—including rioting, conspiracy, and threats—coordinated through joint terrorism task forces.

Financial disruption targeted peripheral networks. SDGT blocking orders required United States institutions to freeze assets and report holdings linked to the four groups, while prohibiting transactions. Because anarchist entities rely on informal funding, effects concentrated on denying access to formal channels for international transfers supporting European operations.

Diplomatic coordination amplified impact. Hungary‘s prior listing of Antifa Ost facilitated intelligence sharing, while designations encouraged European partners to align restrictions under respective counterterrorism frameworks. The actions signaled United States commitment to addressing ideologically driven violence transcending traditional jihadist threats.

Institutional challenges surfaced in definitional granularity. Anarchist movements resist hierarchical structures, complicating proof of command responsibility required for robust prosecutions. Designations anchored in specific cells conducting verifiable attacks mitigated this risk, preserving legal coherence while extending tools to decentralized ideologies.

The combined approach—foreign designations for identifiable European groups and domestic classification for broader movement—created layered pressure. Foreign listings activated criminal and sanctions levers against transnational elements, while domestic measures enhanced investigative authorities without statutory expansion.

Because threats from decentralized violent extremism evolve through ideological diffusion rather than centralized direction, designations prioritized disruption of operational cells over comprehensive movement coverage. This calibrated strategy avoided overreach into protected political expression while targeting entities meeting terrorist activity thresholds.

The 2025 actions redefined designation applicability to non-traditional adversaries. By documenting sustained bombing campaigns and cross-border assaults, administrative records established precedents for addressing anarchist violence within existing statutory frameworks. Combined with domestic tools, the expansions equipped authorities to counter hybrid ideological threats blending local actions with international resonance.

The Muslim Brotherhood Review: Fragmented Approach to a Transnational Movement

The United States initiated a formal review process for potential terrorist designations of specific national chapters of the Muslim Brotherhood when President Donald J. Trump signed an executive order on November 24, 2025, directing the Secretary of State and Secretary of the Treasury, in consultation with the Attorney General and Director of National Intelligence, to evaluate chapters in Lebanon, Jordan, and Egypt for designation as Foreign Terrorist Organizations (FTOs) under section 219 of the Immigration and Nationality Act and as Specially Designated Global Terrorists (SDGTs) under Executive Order 13224.

Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

Because the Muslim Brotherhood operates as a decentralized transnational network of autonomous national branches rather than a unified hierarchical entity with centralized command, the executive order adopted a granular approach that targets discrete subdivisions where evidentiary records demonstrate fulfillment of statutory criteria—foreign origin, engagement in terrorist activity with retained capability and intent, and threats to United States nationals or national security—while avoiding broader application to the movement as a whole. The order mandated submission of a joint interagency report within 30 days assessing designation eligibility, followed by appropriate action within 45 days thereafter, establishing timelines that extend into early 2026.

Fact Sheet: President Donald J. Trump Begins Process to Designate Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

The review process reflects accumulated evidence distinguishing violent or supportive branches from those engaged primarily in political or social activities. The Lebanese chapter’s military wing assisted terrorist groups in launching rocket attacks against civilian and military targets in Israel following the October 7, 2023, assault, providing operational coordination that directly implicates retained terrorist capability. Egyptian and Jordanian chapters face scrutiny over historical and ongoing affiliations with entities conducting violence, including support networks for designated groups.

As of December 24, 2025, the Department of State maintains Hamas—the Palestinian branch of the Muslim Brotherhood—as the sole designated FTO affiliated with the movement, listed since October 8, 1997, for suicide bombings, rocket attacks, and other operations killing United States nationals. No additional Muslim Brotherhood chapters appear on the current FTO list, which includes organizations meeting statutory thresholds through documented terrorist acts.

Foreign Terrorist Organizations – U.S. Department of State – December 2025

The fragmented strategy addresses longstanding evidentiary challenges. Past efforts to designate the entire Muslim Brotherhood encountered difficulties proving unified command and control across national contexts varying by state repression, electoral participation, and ideological adaptation. Branches in repressive environments adopted clandestine structures, while others operated legally through political parties or charities. Because national chapters develop independent leadership, priorities, and relationships with host governments, administrative records struggle to establish coherent organizational identity sufficient for blanket designation.

The executive order’s focus on Lebanon, Jordan, and Egypt aligns with regional partner designations. Several governments classify the Muslim Brotherhood or affiliates as terrorist entities, providing allied intelligence inputs that strengthen United States records. The process enables sequential designations where evidence independently satisfies criteria, building outward from clearest cases involving direct violence or material support.

Potential designations would activate layered consequences. FTO status triggers material support criminal liability under 18 U.S.C. § 2339B, immigration inadmissibility, and financial blocking. SDGT listing imposes immediate asset freezes and transaction prohibitions. Dual application maximizes disruption against chapters facilitating resources to designated proxies.

The review occurs amid broader 2025 expansions testing designation boundaries. Cartel and anarchist listings demonstrated willingness to apply tools to hybrid threats blending ideology, crime, and violence. The Muslim Brotherhood process extends this logic to Islamist networks where select branches cross terrorist thresholds without implicating non-violent affiliates.

Because Hamas remains the benchmark designated branch, additional listings would clarify distinctions between political Islamist movements and entities retaining terrorist capability. The approach preserves statutory coherence by requiring chapter-specific evidentiary records, mitigating risks of overreach that undermined prior comprehensive attempts.

Interagency timelines ensure deliberate evaluation. The mandated report integrates classified and open-source intelligence assessing operational links, financing channels, and threats to United States interests. Subsequent actions calibrate responses—full designation, subsidiary sanctions, or no action—based on record strength.

The executive order signals policy prioritization of transnational Islamist threats supporting designated groups. By targeting chapters in countries facing internal destabilization, the process reinforces alliances with partners suppressing Muslim Brotherhood activities domestically.

As of December 24, 2025, no final designations have resulted from the review. The Department of State FTO list excludes additional Muslim Brotherhood entities beyond Hamas, reflecting ongoing evidentiary compilation.

The calibrated mechanism balances disruptive potential with legal rigor. Successful designations would isolate violent branches financially and criminally without encompassing broader ideological networks. Failure to meet thresholds preserves tools for future application as circumstances evolve.

The review exemplifies adaptive use of designation authorities against fragmented adversaries. By anchoring actions in national chapter conduct, the process navigates definitional complexities inherent to decentralized movements.

Prosecutorial, Diplomatic, and Statutory Implications

The United States confronts profound prosecutorial strains from the 2025 expansions of Foreign Terrorist Organization (FTO) and Specially Designated Global Terrorist (SDGT) designations, as federal courts and investigative agencies adapt criminal enforcement mechanisms originally calibrated for ideologically driven subnational groups to hybrid adversaries blending profit motives with systematic violence. Dual designations of eight transnational criminal organizations in February 2025—including Tren de Aragua, Mara Salvatrucha (MS-13), Cártel de Sinaloa, Cártel de Jalisco Nueva Generación, Cártel del Noreste, La Nueva Familia Michoacana, Cártel de Golfo, and Cárteles Unidos—activated 18 U.S.C. § 2339B material support liability for knowing provision of resources to these entities, overlaying traditional narcotics prosecutions with national security procedures requiring classified information handling and specialized prosecutorial expertise.

Terrorist Designations of International Cartels – U.S. Department of State – February 2025

Because material support charges demand proof of knowledge tied to designation status or terrorist conduct, and because many cartel affiliates operate through layered networks involving unwitting intermediaries, prosecutors face evidentiary thresholds distinct from straightforward drug trafficking cases. Subsequent designations throughout 2025—encompassing Viv Ansanm and Gran Grif in Haiti (May), Los Choneros and Los Lobos in Ecuador (September), Barrio 18 (September), Cartel de los Soles in Venezuela (November), and Clan del Golfo in Colombia (December)—compounded resource demands on the National Security Division within the Department of Justice, historically oriented toward jihadist financing and support cases.

The November 2025 designations of four European anarchist entities—Antifa Ost, Informal Anarchist Federation/International Revolutionary Front, Armed Proletarian Justice, and Revolutionary Class Self-Defense—as SDGTs with finalized FTO status further diversified caseloads, introducing prosecutions against supporters of decentralized violent extremism lacking centralized financial structures typical of traditional terrorist groups.

Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025

Because these groups rely on informal coordination and ideological diffusion rather than hierarchical command, material support cases necessitate tracing attenuated links to specific attacks, straining intelligence fusion between domestic and international channels. The separate domestic classification of the broader Antifa movement in September 2025 directed enhanced application of existing statutes without invoking material support provisions, preserving prosecutorial focus on foreign-designated cells while avoiding statutory overreach into protected expression.

Diplomatic ramifications manifest in calibrated partner alignments. Latin American designations prompted bilateral coordination on asset seizures and extraditions, yet complicated longstanding counternarcotics partnerships framed under law enforcement rather than counterterrorism paradigms. Haitian gang listings reinforced regional isolation efforts, while Ecuadorian and Colombian designations encouraged intelligence sharing against expanding criminal networks. European anarchist designations leveraged prior national listings—such as Hungary‘s September 2025 classification of Antifa Ost—to facilitate transatlantic restrictions without broad movement stigmatization.

The November 24, 2025, executive order initiating review of select Muslim Brotherhood chapters in Lebanon, Jordan, and Egypt underscores evidentiary granularity, mandating interagency assessment within prescribed timelines to determine designation eligibility without encompassing the decentralized transnational network.

Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

Fact Sheet: President Donald J. Trump Begins Process to Designate Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025

Because Hamas remains the sole designated affiliate since 1997, the process calibrates pressure on branches demonstrating retained terrorist capability—such as Lebanese military wing coordination post-October 2023—while navigating allied sensitivities toward political Islamist entities. As of December 24, 2025, no final designations have emerged, preserving diplomatic space amid ongoing compilation of chapter-specific administrative records.

Statutory coherence faces sustained testing. The 2019 Islamic Revolutionary Guard Corps (IRGC) precedent—first applying FTO criteria to a state instrumentality—demonstrated evidentiary flexibility when records substantiate terrorist support, yet expansions into criminal syndicates and ideological networks probe organizational definability thresholds central to due process and judicial review.

Designation of the Islamic Revolutionary Guard Corps – U.S. Department of State – April 2019

Because FTO status triggers immigration inadmissibility and material support criminality anchored in foreign organization requirements, applications to profit-driven or decentralized entities invite challenges over intent elements and command responsibility. Financial institutions implement enhanced blocking and reporting for newly designated parties, layering atop preexisting narcotics sanctions without duplicating restrictions for most cartel affiliates.

The cumulative 2025 actions—encompassing criminal organizations, anarchist cells, and prospective Islamist chapters—reorient designation authorities toward hybrid threats where violence sustains territorial control irrespective of ideological purity. Prosecutorial adaptation integrates counternarcotics intelligence into national security pipelines, while diplomatic signaling prioritizes maximum pressure over nuanced engagement. Statutory safeguards—administrative records, congressional notification, judicial oversight—mitigate overreach risks, yet sustained expansions demand institutional resilience to preserve evidentiary rigor and international credibility.

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U.S. Terrorist Designation Authorities and Key Applications

Concept	Description	Legal Basis	Date/Key Event	Designated Entities	Consequences	Source
Foreign Terrorist Organizations (FTOs)	Foreign organizations designated for engaging in terrorist activity threatening U.S. nationals or national security.	Section 219 of the Immigration and Nationality Act	Ongoing process; designations effective upon Federal Register publication	Various, including traditional groups and 2025 expansions	Material support crime (18 U.S.C. § 2339B), asset blocking, immigration inadmissibility	Foreign Terrorist Organizations – U.S. Department of State – December 2025
Specially Designated Global Terrorists (SDGTs)	Individuals/entities committing or supporting terrorism; focuses on financial disruption	Executive Order 13224 (September 23, 2001)	Ongoing; immediate upon designation	Various, often dual with FTOs	Asset freeze, transaction prohibitions under IEEPA	Executive Order 13224 – U.S. Department of State – December 2025
Historical Precedent: State Instrumentality	First designation of a governmental entity as FTO	Section 219 INA	Announced April 8, 2019; effective April 15, 2019	Islamic Revolutionary Guard Corps (IRGC), including Qods Force	Material support liability, financial isolation; precedent for hybrid actors	Designation of the Islamic Revolutionary Guard Corps – U.S. Department of State – April 2019
Transnational Criminal Organizations Expansion	Initial wave designating cartels for systematic violence and trafficking threats	Dual FTO/SDGT	February 20, 2025	Tren de Aragua, Mara Salvatrucha (MS-13), Cártel de Sinaloa, Cártel de Jalisco Nueva Generación, Cártel del Noreste, La Nueva Familia Michoacana, Cártel de Golfo, Cárteles Unidos	Criminal prosecutions, financial blocking; integrates counternarcotics	Terrorist Designations of International Cartels – U.S. Department of State – February 2025 Designation of International Cartels – U.S. Department of State – May 2025
Additional Criminal Organizations (Haiti)	Designation of Haitian gangs for violence and instability	Dual FTO/SDGT	May 2025	Viv Ansanm, Gran Grif	Disruption of gang control and trafficking	No publicly accessible primary document available as of 24 December 2025 (mentioned in press releases)
Additional Criminal Organizations (Ecuador)	Designation for attacks on officials and links to Mexican cartels	Dual FTO/SDGT	September 4, 2025	Los Choneros, Los Lobos	Enhanced bilateral coordination	No publicly accessible primary document available as of 24 December 2025
Additional Criminal Organizations (Central America)	Designation for attacks on security personnel	Dual FTO/SDGT	September 2025	Barrio 18	Disruption of regional violence	No publicly accessible primary document available as of 24 December 2025
Additional Criminal Organizations (Venezuela)	Designation for state-linked narco-terrorism	FTO/SDGT	November 16-24, 2025	Cartel de los Soles	Pressure on regime-linked trafficking	No publicly accessible primary document available as of 24 December 2025
Additional Criminal Organizations (Colombia)	Designation for powerful criminal violence	Dual FTO/SDGT	December 2025	Clan del Golfo	Hemispheric isolation	No publicly accessible primary document available as of 24 December 2025
Decentralized Anarchist Networks	Designation of European violent cells for bombings and assaults	SDGT immediate; FTO effective November 20, 2025	Announced November 13, 2025	Antifa Ost (Germany), Informal Anarchist Federation/International Revolutionary Front (Italy), Armed Proletarian Justice (Greece), Revolutionary Class Self-Defense (Greece)	Financial isolation, material support liability; distinguishes from broader movements	Designations of Antifa Ost and Three Other Violent Antifa Groups – U.S. Department of State – November 2025
Domestic Violent Extremism Classification	Separate domestic label for broader network	Executive action	September 2025	Broader Antifa movement	Enhanced investigative tools; no FTO/SDGT application	No publicly accessible primary document available as of 24 December 2025
Muslim Brotherhood Review Process	Targeted evaluation of national chapters for potential designation	Executive Order directing review	November 24, 2025	Chapters in Lebanon, Jordan, Egypt (under review; no final designation as of December 2025)	Potential dual FTO/SDGT if thresholds met; Hamas remains sole designated affiliate (since 1997)	Designation of Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025 Fact Sheet: President Donald J. Trump Begins Process to Designate Certain Muslim Brotherhood Chapters as Foreign Terrorist Organizations and Specially Designated Global Terrorists – The White House – November 2025
Prosecutorial Implications	Strain on national security resources; integration of new threat types	Material support statute for FTOs	Ongoing 2025	Applies to supporters of cartels, anarchists; specialized handling	Higher penalties, classified procedures	Derived from framework sources
Diplomatic Implications	Alignment with partners; complications in bilateral cooperation	Designations encourage parallel restrictions	2025 expansions	Regional coordination (e.g., Hungary on Antifa Ost)	Stigmatization, intelligence sharing	Derived from designation announcements
Statutory Implications	Testing organizational definability and evidentiary thresholds	INA and EO 13224 safeguards	Ongoing	Administrative records, judicial review preserve coherence	Risk of challenges if overextended	Foreign Terrorist Organizations – U.S. Department of State – December 2025

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