Susan Collins

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Sen. Susan Collins, R-Maine, is followed by reporters as she leaves a meeting of Senate Republicans regarding the government shutdown and debt ceiling on Capitol Hill in Washington, Saturday, Oct. 12, 2013. (AP Photo/Charles Dharapak)

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** FILE ** Sen. Susan Collins, R-Maine, is followed by reporters as she leaves a meeting of Senate Republicans regarding the government shutdown and debt ceiling on Capitol Hill in Washington, Saturday, Oct. 12, 2013. (AP Photo/Charles Dharapak)

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From left, Diane Millich, a member of the Southern Ute Indian Tribe in Colorado and domestic abuse survivor, Attorney General Eric Holder, Vice President Joseph R. Biden and Sen. Susan Collins, Maine Republican, listens to President Obama speaks at the Interior Department in Washington on March 7, 2013, before signing of the Violence Against Women Act. (Associated Press)

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Sen. Susan Collins, center, ranking member of the Homeland Security and Governmental Affairs Committee, gets into an elevator at the U.S. Capitol after talking to the media following a closed-door briefing on the Benghazi attack on Thursday, Nov. 29, 2012. (Barbara L. Salisbury/The Washington Times)

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** FILE ** U.N. Ambassador Susan E. Rice leaves a meeting on Capitol Hill in Washington on Wednesday, Nov. 28, 2012, with Sens. Susan Collins, Maine Republican, and Bob Corker, Tennessee Republican, about the Benghazi terrorist attack. (Associated Press)

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Sen. Susan Collins, ranking member of the Homeland Security and Governmental Affairs Committee, talks to the media following a closed-door briefing about the Benghazi attack on Thursday, Nov. 29, 2012 at the U.S. Capitol. (Barbara L. Salisbury/The Washington Times)

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Sen. Joe Lieberman, chair of the Homeland Security and Governmental Affairs Committee, looks on as Sen. Susan Collins, ranking member on the committee, talks to the media following a closed-door briefing about the Benghazi attack on Thursday, Nov. 29, 2012 at the U.S. Capitol. (Barbara L. Salisbury/The Washington Times)

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Sen. Susan Collins, center, ranking member of the Homeland Security and Governmental Affairs Committee, gets into an elevator at the U.S. Capitol after talking to the media following a closed-door briefing on the Benghazi attack on Thursday, Nov. 29, 2012. (Barbara L. Salisbury/The Washington Times)

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Sen. Susan Collins, Maine Republican, and Sen. Bob Corker, Tennessee Republican, were not swayed after meeting with U.N. Ambassador Susan E. Rice, a possible nominee for secretary of state, about her comments in the aftermath of a Sept. 11 terrorist attack on the U.S. Consulate in Benghazi, Libya. (Andrew Harnik/The Washington Times)