In a lawsuit filed in Brooklyn on Thursday, federal prosecutors accused the city and several of its officials of seeking “to obstruct federal law enforcement” in violation of the constitution’s Supremacy Clause, which holds that the constitution and federal laws generally prevail over conflicting state laws.

The U.S. government on Thursday sued New York City, seeking to block enforcement of several local laws its says are designed to impede its ability to enforce federal immigration laws. In a complaint filed in Brooklyn federal court,