California's mask ban for law enforcement officers struck down in federal court

An appeals court has blocked a California law passed in 2025 requiring federal immigration agents to wear a badge or some form of identification.

The Trump administration filed a lawsuit in November challenging the law, arguing that it would threaten the safety of officers who are facing harassment, doxing, and violence and that they violated the constitution because the state is directly regulating the federal government.

A three-judge panel of the 9th U.S. Circuit Court of Appeals issued an injunction pending appeal Wednesday. It had already granted a temporary administrative injunction to block the implementation of the law.

"We conclude that [section] 10 of the No Vigilantes Act attempts to directly regulate the United States in its performance of governmental functions," the ruling reads. "The Supremacy Clause forbids the State from enforcing such legislation. The United States is therefore likely to succeed on the merits of its Supremacy Clause claim, and the other preliminary injunction factors also weigh in its favor. Thus, we grant the motion for an injunction pending appeal."