Sunday on ‘This Week’: Sen. Tim Scott and Adm. Mike Mullen

— -- Martha Raddatz goes one-on-one with Sen. Tim Scott, R-South Carolina, and later speaks with former Chair of the Joint Chiefs of Staff, Adm. Mike Mullen, Sunday on “This Week.”

Plus, after weeks of major headlines surrounding sexual misconduct allegations, Rep. Barbara Comstock, R-Virginia, Fmr. Rep. Donna Edwards, D-Maryland, founder of "Women for Women International" and editor-at-large of "Women in the World" Zainab Salbi, and Rep. Jackie Speier, D-California, discuss sexual misconduct and the proper response to the ongoing allegations.

And the Powerhouse Roundtable debates the week in politics, with ABC News political director Rick Klein, ABC News' Cokie Roberts, FiveThirtyEight senior political writer Perry Bacon Jr., and Politico Playbook co-author and Politico senior Washington correspondent, Anna Palmer.

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