Sunday on 'This Week': Former Rep. Joe Walsh, Cindy McCain

Chief Anchor George Stephanopoulos speaks exclusively with former Illinois GOP Congressman Joe Walsh on whether he’ll challenge President Trump for the 2020 nomination, only on “This Week” Sunday.

Plus, Chief White House Correspondent Jonathan Karl sits down with McCain Institute Board Chair Cindy McCain.

And the Powerhouse Roundtable debates all the week’s politics, with ABC News Political Analyst Matthew Dowd, Former New Jersey Governor and ABC News Contributor Chris Christie, Former Chicago Mayor and ABC News Contributor Rahm Emanuel, Democracy for America CEO and ABC News Contributor Yvette Simpson and Republican Strategist and CNN Political Commentator Alice Stewart.

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