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The Inquiry: Top diplomat says Ukraine aid tied to Biden probe

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The top diplomat to Ukraine, Bill Taylor, is the fourth person to tell us that there was a quid pro quo. NBC News Correspondent Geoff Bennett, Washington Post Senior Political Reporter Aaron Blake, former Deputy Assistant Secretary of State Philippe Reines, MSNBC Correspondent Garrett Haake and Former National Security Council member during the Bush and Obama administrations, Kelly Magsamen join Katy Tur to discuss.