9th Circuit blocks California law requiring ICE agents to show ID

The 9th U.S. Circuit Court of Appeals granted the federal government a preliminary injunction on Wednesday against California's No Vigilantes Act provision requiring immigration officers to visibly identify themselves while on duty. The three-judge panel ruled the state cannot regulate federal agents' performance of governmental functions without congressional authorization, citing the Supremacy Clause. The ruling reverses a lower court decision that had refused to block the law.