Sen. John McCain, R-Ariz., ranking Republican on the Senate Armed Services Committee, center, flanked by fellow committee members, Sen. Kelly Ayotte, R-N.H., left, and Sen. Lindsey Graham, R-S.C., right, speaks on Capitol Hill in Washington, Tuesday, Nov. 27, 2012, following a meeting with UN Ambassador Susan Rice. Rice met with lawmakers to discuss statements she made about the attack on the U.S. Consulate in Libya that left the ambassador and three other Americans dead. (AP Photo/Susan Walsh)

Sen. John McCain, R-Ariz., ranking Republican on the Senate Armed Services Committee, center, flanked by fellow committee members, Sen. Kelly Ayotte, R-N.H., left, and Sen. Lindsey Graham, R-S.C., right, speaks on Capitol Hill in Washington, Tuesday, Nov. 27, 2012, following a meeting with UN Ambassador Susan Rice. Rice met with lawmakers to discuss statements she made about the attack on the U.S. Consulate in Libya that left the ambassador and three other Americans dead. (AP Photo/Susan Walsh)

FILE - This April 14, 2012 file photo shows U.S. Ambassador to the United Nations Susan Rice speaking at U.N. headquarters. With congressional opposition softening, U.N. Ambassador Susan Rice could find her name in contention as early as this week to succeed Hillary Rodham Clinton as secretary of state. Her nomination to the top Cabinet job could signal the potential for a more robust intervention in world crises in President Barack Obama’s second term. (AP Photo/Craig Ruttle, File)

Sen. Lindsey Graham, R-S.C., a member of the Senate Armed Services Committee and the Senate Homeland Security Committee, center, accompanied by fellow Senate Armed Services Committee member, Sen. Kelly Ayotte, R-N.H.,, right, gestures while speaking to reporters on Capitol Hill in Washington, Tuesday, Nov. 27, 2012, after a closed-door meeting with UN Ambassador Susan Rice. (AP Photo/J. Scott Applewhite)

Senate Armed Services Committee member, Sen. Kelly Ayotte, R-N.H.,, center, accompanied by fellow Senate Armed Services Committee member, Sen. Lindsey Graham, R-S.C., right, speaks to reporters on Capitol Hill in Washington, Tuesday, Nov. 27, 2012, following a closed-door meeting with UN Ambassador Susan Rice. (AP Photo/J. Scott Applewhite)

FILE - This June 7, 2012 file photo shows U.S. Ambassador to the U.N. Susan Rice listening during a news conference at the UN. Republican opposition to Rice's possible nomination to be secretary of state began to crack Sunday, Nov. 25, 2012, as Sen. John McCain said she was "not the problem" in the White House's explanation about the Sept. 11 attack in Libya and he could be persuaded to swing behind her potential promotion. McCain's comments provide an opening for the administration, which struggled mightily in the weeks leading up to the Nov. 6 election to tamp down speculation of a cover-up involving the attack against the U.S. Consulate in Benghazi. (AP Photo/Bebeto Matthews)