The lawsuit accuses city, county, and state authorities of ‘minimally enforcing—and oftentimes affirmatively thwarting’ federal immigration law.

Illinois Gov. JB Pritzker says the state has done nothing but follow the law, but the Department of Justice says the opposite — arguing that both Illinois and Chicago passed legislation that inhibited immigration enforcement in the state.

Federal officials are asking a judge to bar the Illinois, Chicago, Cook County and the Cook County Sheriff from using local laws that protect migrants to hamper law enforcement.