The Department of Justice (DOJ) filed a lawsuit on May 15 against Connecticut over a law that prohibits federal officers from wearing face coverings.

Connecticut passed the legislation, called the “Act Concerning Democracy and Government Accountability,” in response to Immigration and Customs Enforcement operations in the state, with a goal of more oversight of federal agents.

The DOJ called the law an illegal attempt to regulate the federal government, a news release said.

“Law enforcement officers risk their lives every day to keep Americans safe, and they do not deserve to be doxed or harassed simply for carrying out their duties,” acting Attorney General Todd Blanche said, calling Connecticut’s law “anti-law enforcement.”

The DOJ lawsuit named Connecticut Gov. Ned Lamont, Attorney General William Tong, Chief State’s Attorney Patrick Griffin, and Deputy Chief State’s Attorney Eliot Prescott as defendants.

None responded to requests for comment from The Epoch Times.

The “Act Concerning Democracy and Government Accountability,” Senate Bill 397, was signed into law by Lamont on May 4.

State Republicans sought to block it and argued for protecting federal agents’ identities, especially those carrying out immigration operations. Republican Senate Minority Leader Stephen Harding called Senate Bill 397 an attack on law enforcement.

“State governments do not have the authority to tell the federal government what to do,” Harding previously said during debate on the bill.

Democrats supported the bill. Democratic state Rep. Jason Rojas spoke at a news conference following the signing of the bill and said it makes the state safer for its citizens.

“Our immigrant communities are part of the fabric of this state, and this law helps ensure their rights are upheld,” Rojas said.

The DOJ argues that the supremacy clause of the U.S. Constitution and the legal principle of preemption prevent Connecticut from enacting and enforcing its mask ban on federal agents.

“This Department of Justice will not stand by idly in the face of lawless efforts that endanger our brothers and sisters in blue,” Associate Attorney General Stanley Woodward said.

In addition to prohibiting federal officers from wearing facial coverings while performing official duties, the legislation requires agents to clearly display their badges and name tags. Additionally, it seeks to require federal officers to adhere to Connecticut’s preferred use-of-force policies.

These measures endanger agents who are already facing harassment, doxxing, and violence, the DOJ stated.

If federal officers do not comply with Connecticut’s law, they could face prosecution. This ultimately chills federal law enforcement and disrupts sensitive operations, the DOJ stated.

The DOJ’s Civil Division has filed lawsuits against other states with similar policies to Connecticut’s, such as New York, New Jersey, and California.