'Become the adversary': Expert says Trump is harming troops by sending them to US cities

U.S. Marshals Service agents search the area after a man was detained during a surveillance patrol in the Marshall Heights neighborhood, after U.S. President Donald Trump deployed the National Guard and ordered an increased presence of federal law enforcement to assist in crime prevention, in Washington, D.C., U.S., August 23, 2025. REUTERS/Jose Luis Gonzalez