California is challenging President Trump's masked immigration raids with a bill banning law enforcement officers from operating anonymously. Why it matters: The proposal responds to a surge in U.S. Immigration and Customs Enforcement sweeps amid the federal administration's aggressive deportation push.

The bill would make it a misdemeanor for local, state and federal law enforcement officers to cover their faces and encourage them to wear a form of identification.

State senators Scott Wiener and Jesse Arreguin want law enforcement working in California to be identifiable and to restrict mask wearing in public operations; federal officials have said their