Google AI Overview: As of February 2026, the Denver City Council is actively pursuing ordinances that attempt to regulate how federal law enforcement agents (specifically Immigration and Customs Enforcement, or ICE) operate within the city, particularly regarding the use of masks. While local governments can regulate public safety within their jurisdiction, such ordinances face significant legal challenges under the Supremacy Clause of the U.S. Constitution, which dictates that federal law overrides conflicting local laws.