The Trump administration sued four New Jersey cities over their so-called sanctuary city policies aimed at prohibiting police from cooperating with immigration officials, saying the local governments are standing in the way of federal enforcement.

Justice Department lawyers say in a lawsuit that Newark, Jersey City, Hoboken and Paterson are shielding illegal immigrants from lawful prosecution.

The DOJ is accusing the cities of Newark, Hoboken, Jersey City, and Paterson of impeding the administration’s mass deportation efforts.