Illinois Attorney General Kwame Raoul has filed a lawsuit in federal court against the U.S. Department of Homeland Security and Trump administration officials, including CBP and ICE. The case, joined by the city of Chicago, challenges what the state describes as unlawful and dangerous immigration enforcement tactics carried out in Illinois.
The lawsuit was filed in the U.S. District Court for the Northern District of Illinois (Eastern Division). Illinois officials say federal agents have acted in ways that undermine constitutional rights and threaten public safety, including detaining people and questioning residents without warrants or probable cause.
According to the complaint, DHS deployed quasi-military personnel from CBP and ICE to Illinois in September 2025. The state alleges that since then, agents have used tear gas or other chemical weapons against bystanders, and that residents have been injured, including children, older adults, and local police officers.
The filing also describes alleged violence and disruption tied to enforcement actions. Illinois says one resident was killed, another was shot, and there was a military-style raid on a Chicago apartment building where all residents were detained, including children. The state further alleges hundreds of arrests and many random questioning incidents, along with increased fear that has affected schools, social services, and courthouse access.
Illinois also claims the federal government tried to pressure the state over policy disagreements, including by unlawfully withholding federal funds and attempting to deploy the Illinois and Texas National Guards. The lawsuit asks the court to hold the federal government accountable for the alleged tactics and abuses of power. For details, readers should review the complaint and the official announcement from the Illinois Attorney General.