Thursday, November 7, 2019: Pence Aide Who Heard Trump's July 25 Testifies

A crack in the White House impeachment wall: An aide to Vice President Pence who was central to Ukraine policy honors a subpoena and is testifying on Capitol Hill this hour. Plus, Bernie Sanders looks to make a 2020 move: A new immigration plan today, and clear strategy on health care: Keep the peace with Elizabeth Warren, but poke Joe Biden. And, we answer some of the impeachment questions submitted by viewers on Twitter. Today's Panel: Seung Min Kim with The Washington Post, Olivier Knox with SiriusXM, POLITICO's Laura Barrón-López, and Margaret Talev with Axios Also on the program: CNN's Kaitlan Collins, Evan Pérez, Manu Raju, Jeff Zeleny, and Shimon Prokupecz

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