On March 14, 2025, President Trump invoked the Alien Enemies Act of 1798, a law originally designed to authorize wartime detention of foreign nationals from hostile nations, and applied it to Tren de Aragua, a Venezuelan criminal organization. The proclamation, issued under Document 2025-04865, designates the gang as an "invading force" threatening U.S. national security. This interpretation represents a significant departure from the statute's historical application, which has been invoked only four times in American history and exclusively during declared wars. The proclamation authorizes enhanced enforcement actions against members of the organization, including detention and removal from the United States without requiring the full procedural protections of standard immigration law.

The direct impact falls on Venezuelan nationals suspected of Tren de Aragua affiliation, as well as any individuals the government claims have connections to the organization. Under the Alien Enemies Act, enforcement agents gain expanded authority to detain foreign nationals with minimal due process safeguards that would normally apply in immigration proceedings. This creates a lower evidentiary threshold for removal and potentially affects individuals with tangential connections to the organization, not merely active criminal participants.

This proclamation accelerates a broader pattern of expanding executive immigration authority established throughout the Trump administration's tenure. The invocation of the Alien Enemies Act follows the closure of the Office of Immigration Detention Ombudsman in May 2026, which removed independent oversight of detention facility conditions and abuse allegations. It operates in tandem with aggressive pursuit of Temporary Protected Status termination for 13 countries and efforts to tighten green card eligibility based on political speech. Together, these actions systematically dismantle both procedural protections for immigrants and mechanisms for accountability in enforcement operations.

Legally, the proclamation's constitutionality has been questioned by immigration law experts, though no court has yet issued a definitive ruling blocking its application. The interpretation of a criminal organization as a national security "invasion" under an 18th-century wartime statute remains untested in contemporary litigation.