Sen. Mark Warner, D-Virginia, joins moderator Margaret Brennan to discuss the school shooting in Santa Fe and the latest on the Russia investigation, including why he says the president's allies are playing "fast and loose" with secret information.
Sen. Mark Warner, D-Virginia, joins moderator Margaret Brennan to discuss the school shooting in Santa Fe and the latest on the Russia investigation, including why he says the president's allies are playing "fast and loose" with secret information.