The president is due to elaborate on his plans for the city on Monday, with some raising concerns about federal overreach.

The U.S. military is preparing for the possible activation of a portion of the DC National Guard to be deployed to Washington, D.C., according to a U.S. official. It’s unclear exactly how many Guardsmen might be activated, as a decision has not yet been made. There are 2,700 personnel in the D.C. National Guard.

Sources indicate Trump plans to deploy the National Guard in DC to combat crime, with increased federal patrols already visible.