The Justice Department lawsuit aims to end "sanctuary" policies in Los Angeles and elsewhere that refuse to cooperate on immigration enforcement.

Los Angeles Mayor Karen Bass is expected to speak at City Hall on Tuesday morning, a day after the Department of Justice filed a lawsuit claiming that the city's sanctuary policies are illegal and "interfere with and discriminate against the Federal Government's enforcement of federal immigration law.

President Donald Trump has federalized the National Guard and dispatched Marines to the city to respond to protests of ICE immigration raids. The ICE agents, many of whom are masked, have been spotted throughout the region, arresting about 2,000 immigrants since June 6, according to internal documents reviewed by The New York Times.