Sunday on 'This Week': Sen. Dick Durbin and Ambassador Nikki Haley Sen. Dick Durbin and Ambassador Nikki Haley will be on "This Week" Sept. 23.

As negotiations carry on over testimony on sexual misconduct allegations facing Supreme Court nominee Brett Kavanaugh, Judiciary Committee member Sen. Dick Durbin, D-Ill., joins “This Week” Sunday.

Plus, U.S. Ambassador to the United Nations Nikki Haley discusses the upcoming U.N. General Assembly, including the latest on North Korea and Iran.

And the Powerhouse Roundtable debates the week in politics, with ABC News Political Analyst Matthew Dowd, ABC News’ Cokie Roberts, former New Jersey Governor and ABC News Contributor Chris Christie, Open Society Foundations President and former Obama White House Political Affairs Director Patrick Gaspard, and New York Times Congressional Correspondent Sheryl Gay Stolberg.

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