Washington, D.C., officials are taking the Trump administration to court over what they call an unlawful federal seizure of the city’s police force, a move that’s now escalated into a showdown over immigration enforcement and the city’s limited right to self-government.

The White House has backed off plans for a full takeover of the D.C. police force and will allow for the city’s police chief to remain in charge after a judge indicated they would block the move.