'You're wrong' vs. 'I'm right': Sanders and Warren spar with moderates

"You're wrong" for criticizing “Medicare for All,” Sen. Bernie Sanders told former Rep. John Delaney in the first answer of the night — setting up an evening of conflict between the left and the center. POLITICO health care reporter Dan Diamond joins host Scott Bland to analyze an important moment from round one of the second Democratic debate on Tuesday night. Learn more about your ad choices. Visit megaphone.fm/adchoices