The Trump administration agreed to leave the D.C. police chief in control of the department, but the District’s police were ordered to aid immigration efforts.

Washington, DC, Police Chief Pamela Smith signed an executive order Thursday allowing DC police officers to share information about people not in their custody with federal immigration enforcement agencies such as ICE — as President Donald Trump continues his federal takeover of law enforcement in the nation’s capital and crackdown on illegal immigration.

DC police chief authorizes sharing information with immigration agencies during traffic stops but prohibits arrests based solely on federal immigration warrants.