Sunday on 'This Week': Treasury Secretary Steven Mnuchin Sen. Bernie Sanders, Rep. Jim Himes, Rep. Lee Zeldin

ABC News Chief White House Correspondent Jonathan Karl goes one-on-one with Treasury Secretary Steven Mnuchin to discuss the administration's response to Turkey's military action in Syria. And Karl sits down 2020 Presidential Candidate Sen. Bernie Sanders, I-Vt., to talk about his health and the latest in the 2020 race, Sunday on “This Week.”

Plus, Intelligence Committee member Rep. Jim Himes, D-Conn., and Foreign Affairs Committee member Rep. Lee Zeldin, R-NY., discuss the latest on the impeachment inquiry.

And the Powerhouse Roundtable with ABC News Political Director Rick Klein, Washington Post Congressional Reporter Rachael Bade, Democratic Strategist Stefanie Brown James, and Editor-in-Chief of The Dispatch Jonah Goldberg.

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