A newly signed California law that bans law enforcement officers, including federal agents, from wearing masks during official duties is drawing sharp federal pushback.

U.S. Attorney Bill Essayli is warning state officials that any attempt to enforce the measure against Immigration and Customs Enforcement (ICE) or other federal personnel will face immediate legal consequences.

Governor Gavin Newsom signed the legislation earlier this month, framing it as a transparency measure designed to prevent intimidation and ensure accountability. The statute bars law enforcement in California from covering their faces during operations, except in limited circumstances such as riot-control situations or public health emergencies. Proponents argued that the law would prevent abuse of power and allow citizens to identify officers who engage in misconduct.

But federal officials quickly branded the policy unconstitutional. The Department of Homeland Security (DHS) said last week that the measure conflicts with federal operational standards, particularly for ICE agents who often conceal their identities during raids to protect themselves and their families.