United States v. State of Illinois
Case Overview
The United States government sued the state of Illinois over its sanctuary cities, citing President Trump's executive orders "Declaring a National Emergency at the Southern Border of the United States" and "Protecting the American People Against Invasion." The suit alleges that the policies preventing assistance to federal immigration authorities violates the Supremacy Clause and asks that the court prevent the state from enforcing the TRUST Act, the Way Forward Act, Cook County Ordinance, and the Chicago Welcoming City Ordinance.
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The Application
Illinois's sanctuary statutes (TRUST Act, Way Forward Act) and local ordinances restrict cooperation with federal immigration authorities. The United States alleges these policies directly conflict with and frustrate executive orders mandating enhanced immigration enforcement at the southern border.
The Conclusion
The Northern District of Illinois issued a decision in February 2025, with Judge Lindsay C. Jenkins addressing the preemption claim against Illinois's sanctuary city framework.
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