Lindsey Graham
  • In this Jan. 31, 2013, file photo, Republican Chuck Hagel, President Obama's choice for Defense Secretary, testifies before the Senate Armed Services Committee during his confirmation hearing on Capitol Hill in Washington.

    Using the former Senator's pending nomination to helm the Pentagon as leverage to probe the attack on the U.S. embassy in Benghazi.

    LAST UPDATE : Feb 15, 2013, 7:56 PM EST