In a complaint filed in U.S. District Court in Sacramento just after 9 p.m. Eastern time, the Justice Department alleged that three recently enacted California laws obstruct enforcement of federal immigration law and harm public safety.

The Justice Department asked a federal judge to block the California laws, which restrict how state businesses and law enforcement agencies can cooperate with immigration authorities. Attorney General Jeff Sessions is to address the lawsuit in a speech Wednesday at the California Peace Officers Association’s 26th Annual Law Enforcement Day, saying, in part: “We are fighting to make your jobs safer and to help you reduce crime in America. And I believe we are going to win,” according to an excerpt of his prepared remarks.

California Attorney General Xavier Becerra (D) said Tuesday night that while he had yet to examine what the Justice Department filed, he felt the state was abiding by the Constitution and cooperating with its federal partners to foster public safety.