FILE - In this Jan. 31, 2013 file photo Sen. Lindsey Graham, D-S.C., questions former Nebraska Sen. Chuck Hagel, President Barack Obama's Secretary of Defense nominee, during Hagel's confirmation hearing on Capitol Hill in Washington. On a Sunday, Feb. 10, 2013, talk show Graham threatened to hold up Hagel's Senate confirmation, and that of John Brennan as CIA director, until the White House provides more answers about the deadly September 11 attack against a US diplomatic facility in Benghazi, Libya. (AP Photo/Susan Walsh, File)

Associated Press
FILE - In this Jan. 31, 2013 file photo Sen. Lindsey Graham, D-S.C., questions former Nebraska Sen. Chuck Hagel, President Barack Obama's Secretary of Defense nominee, during Hagel's confirmation hearing on Capitol Hill in Washington. On a Sunday, Feb. 10, 2013, talk show Graham threatened to hold up Hagel's Senate confirmation, and that of John Brennan as CIA director, until the White House provides more answers about the deadly September 11 attack against a US diplomatic facility in Benghazi, Libya. (AP Photo/Susan Walsh, File)
FILE - In this Jan. 31, 2013 file photo Sen. Lindsey Graham, D-S.C., questions former Nebraska Sen. Chuck Hagel, President Barack Obama's Secretary of Defense nominee, during Hagel's confirmation hearing on Capitol Hill in Washington. On a Sunday, Feb. 10, 2013, talk show Graham threatened to hold up Hagel's Senate confirmation, and that of John Brennan as CIA director, until the White House provides more answers about the deadly September 11 attack against a US diplomatic facility in Benghazi, Libya. (AP Photo/Susan Walsh, File)
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