트럼프 행정부, 아이스 마스크 금지를 놓고 뉴저지 주지사 상대로 소송

New Jersey, where Mikie Sherrill is governor, is one of only a few states to try to bar federal immigration agents from wearing masks.

The Trump administration on Wednesday sued New Jersey’s governor and attorney general over a state law that bars law enforcement officers, including Immigration and Customs Enforcement agents, from wearing masks while on duty.

The governor of New Jersey, Mikie Sherrill, last month signed legislation that requires ICE agents to clearly identify themselves and prohibits them from shielding their faces during enforcement actions. Department of Homeland Security officials immediately said that agents would continue wearing masks despite the state law.

On Wednesday, the Justice Department backed up that vow with a legal challenge. It is at least the second time the Trump administration has sued to overturn immigration policies enacted by Ms. Sherrill, a Democrat who has harshly criticized President Trump.

The new suit argues that New Jersey’s anti-mask law violates the U.S. Constitution and opens agents and their families to online harassment and violence. The Justice Department filing also said that it was essential for ICE agents to maintain anonymity so that they could retain an element of surprise in “future enforcement.”

“Because suspects who recognize officers may take pre-emptive actions to evade apprehension and obstruct enforcement efforts, masking is critical for maintaining operational effectiveness,” the suit states.

That is precisely the type of anonymous enforcement that Ms. Sherrill said she aimed to prevent when she signed the bill into law.

“In the United States of America, we’re not going to tolerate masked, roving militias pretending to be well-trained law enforcement agents,” Ms. Sherrill said last month.

The Justice Department has argued that New Jersey lacks the constitutional clout to enforce the law, citing a doctrine known as the supremacy clause. The clause prohibits state officials from prosecuting federal officers when they are reasonably acting in their official capacity.

“Such blatant disregard for the Constitution is not merely a political statement, but is instead deliberate action that jeopardizes the public safety of all Americans,” Justice Department lawyers wrote.

“To be clear, the Federal Government will not comply with this blatantly unconstitutional law,” they added. “But the threat of enforcement by defendants chills individual officers from protecting themselves and performing their duties.”

A spokesman for Ms. Sherrill deferred comment to the state’s attorney general, Jennifer Davenport, who said she looked forward to responding to the Justice Department’s legal challenge in court.

“The federal government still cannot explain when its officials need to mask or forgo identification in violation of this law, or why they actually need to do so, particularly given the serious safety concerns inherent in anonymized policing,” Ms. Davenport said in a statement.

Masking, she said, undermines “public trust and accountability,” and makes it “easier for criminals to impersonate our officers.”

California last year became the first state in the country to bar federal and local police officers from wearing face coverings. In February, a federal judge struck down that law, but suggested that a ban that also included state police officers would be constitutional.

New Jersey and Washington State later adopted laws that prohibit all local, state and federal officers from wearing masks in most situations. Democrats in at least 17 other states, including New York, have introduced similar bills, according to the National Conference of State Legislatures.

Tracey Tully is a reporter for The Times who covers New Jersey, where she has lived for more than 20 years.