Sunday on 'This Week': Treasury Secretary Steven Mnuchin, Sen. Bill Cassidy, and Sen. Lindsey Graham

— -- Martha Raddatz goes one-on-one with Treasury Secretary Steven Mnuchin, Sunday on “This Week.”

Plus, Sen. Lindsey Graham, R-SC, and Sen. Bill Cassidy, R-LA, discuss their hotly debated health care bill in a “This Week” Sunday exclusive. Kaiser Permanente CEO Bernard J. Tyson discusses the health care industry’s concerns about the bill, and ABC News congressional correspondent Mary Bruce reports on what Congress may do next.

And following this week’s United Nations General Assembly, former Vice Chair of the Joint Chiefs of Staff Gen. James Cartwright and New Yorker staff writer Evan Osnos discuss North Korea and the war of words between President Trump and Kim Jong-un.

And the Powerhouse Roundtable debates the week in politics, with NPR “Morning Edition” host Steve Inskeep, Politico Playbook co-authors Anna Palmer and Jake Sherman, and ABC News senior White House correspondent Cecilia Vega.

See the whole political picture, Sunday on “This Week.”

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