Friday, September 13, 2019: Dem Opponents Called Out for Questioning Biden's Memory

Fallout today from a feisty 10-candidate Democratic debate. Joe Biden mixes it up with Elizabeth Warren and Bernie Sanders on health care, and two contenders who made Biden's age and stamina an issue last night stage a hasty retreat the morning after. Plus, Beto O'Rourke adds a "hell yes" when asked if he would push a mandatory buy back of assault weapons. It is a line that could help him in the Democratic primary, but a position most Democrats see as an impossible sell in a general election. And President Trump gets in a few jabs at his potential Democratic opponents in a speech at the GOP retreat in Baltimore. On today's panel: Julie Pace with Associated Press, CNN's Jeff Zeleny, Michael Shear with The New York Times, and Tarini Parti with The Wall Street Journal

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