Monday, December 16, 2019: Both Sides Maneuvering Ahead of This Week's Impeachment Vote

The House is scheduled to vote Wednesday on two articles of impeachment -- one says President Trump abused his powers, the other says he obstructed Congress as it demanded answers about his Ukraine policy. Looking ahead to a Senate trial, Democratic leader Chuck Schumer asks for four Trump insiders to be called as witnesses. Don't bet on that happening, but it's a warning to Trump allies who have their own witness list. And don't forget the 2020 race. New polling shows Joe Biden and Bernie Sanders leading the fight for the Democratic nomination. Today's panel: CNN's Kaitlan Collins, Rachael Bade with The Washington Post, Lisa Lerer with The New York Times, and Vivian Salama with The Wall Street Journal Also on the program: CNN's Manu Raju

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