Illinois as a Sanctuary State: Overview and Key Issues

Illinois has chosen to be a sanctuary state since 2017 under the Illinois TRUST Act, which limits local law enforcement's cooperation with federal immigration authorities, such as U.S. Immigration and Customs Enforcement (ICE). This means Illinois police generally cannot detain individuals solely based on immigration status or honor ICE detainers unless accompanied by a criminal warrant. The VOICES Act further provides procedural protections for immigrants during interactions with law enforcement. The policy aims to build trust between immigrant communities and local authorities, but it has sparked significant debate over public safety, economic burdens, and federal-state tensions.

As of 2025, Illinois remains one of several states (including California and New York) facing federal scrutiny for these policies.    Learn More...

The Sanctuary policy of IL has consequences...

According to data from the U.S. Department of Homeland Security, Illinois did not honor any ICE detainers in 2025 due to its sanctuary policies. 

Instead, 1,768 criminal illegal aliens who had active detainers were released from custody instead of being turned over to ICE.   IL did not comply with Federal law.  Note that a Detainer Order, under immigration law, is the equivalent of an arrest warrant.  There are IL state reports from prior years that indicate compliance with Detainer orders by some county sheriffs, in violation of Illinois law.

Policies on Illegals matter...

The national campaign to end and reverse illegal entry to our country is accelerating, leading to growing tension in santuary cities.

For a list of the top ten sanctuary states and illegal residents, click here