In this Sunday, March 3, 2013, photograph provided by CBS News Sen. 

In this Sunday, March 3, 2013, photograph provided by CBS News Sen. John McCain, R–Ariz., and Sen. Lindsey Graham, R–S.C., right, are interviewed on CBS's "Face the Nation" in Washington. Graham and McCain said Sunday that they want answers from the Obama administration about what happened at the U.S. Consulate in Benghazi, Libya, last September that left four Americans dead, and that they are willing to oppose the nomination of a new CIA director, John Brennan, until they get them." (AP Photo/CBS News, Chris Usher)
Associated Press
In this Sunday, March 3, 2013, photograph provided by CBS News Sen. John McCain, R–Ariz., and Sen. Lindsey Graham, R–S.C., right, are interviewed on CBS's "Face the Nation" in Washington. Graham and McCain said Sunday that they want answers from the Obama administration about what happened at the U.S. Consulate in Benghazi, Libya, last September that left four Americans dead, and that they are willing to oppose the nomination of a new CIA director, John Brennan, until they get them." (AP Photo/CBS News, Chris Usher)
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