California Governor Gavin Newsom unveiled his campaign to slash the state’s Republican-leaning congressional seats, portraying the effort as crucial to opposing President Donald Trump while accusing the White House of stationing armed federal agents outside the event.

A group of masked U.S. Border Patrol agents showed up in trucks outside of the press conference at the Japanese American National Museum.

Border Patrol was “directed, clearly by the White House, as a political operation to make a point,” Newsom said.