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

The Department of Justice alleges that Los Angeles' sanctuary city policies interfere with the federal government's ability to enforce immigration laws.

President Donald Trump's administration filed suit Monday against Los Angeles, claiming the city is obstructing the enforcement of immigration laws and creating a lawless environment with its sanctuary policies that bar local police from sharing information on people without legal status.