Mr. Trump has also asserted federal control over the D.C. Metropolitan Police Department, drawing pushback from local politicians who argued the move was a threat to the city's autonomy. Last week, the Justice Department backed down from an attempt to name an emergency local police chief following a lawsuit from D.C. officials.

President Donald Trump thanked Washington, D.C., police officers, as well as National Guard troops and federal agents, for their work and hinted the federal takeover of