President Trump is the first president to use a declared emergency to wrest control of Washington, D.C.’s police force.

The influx came the morning after the Republican president announced he would be activating the guard members and taking over the District’s police department, something the law allows him to do temporarily.

Federal troops are patrolling the National Mall and neighborhoods across Washington in President Donald Trump's extraordinary takeover of the police department in the nation's capital. Now the Trump administration is moving to install its own emergency police commissioner,