Aretha Franklin and Richard Gibbs arrive for the formal Artist's Dinner honoring the recipients of the 2012 Kennedy Center Honors hosted by United States Secretary of State Hillary Rodham Clinton at the U.S. Department of State in Washington, D.C. on December 1, 2012. The 2012 honorees are Buddy Guy, actor Dustin Hoffman, late-night host David Letterman, dancer Natalia Makarova, and the British rock band Led Zeppelin (Robert Plant, Jimmy Page, and John Paul Jones). UPI/Ron Sachs/Pool
FILE - In this Feb. 14, 2013 file photo, former Secretary of State Hillary Rodham Clinton laughs as she gives a speech during a ceremony honoring her at the Pentagon in Washington. Clinton was honored with the 2013 Helen Keller Humanitarian Award from Helen Keller International in New York on Wednesday, May 22, 2013.
U.S. Secretary of State Hillary Rodham Clinton, center, and Liberian President Ellen Johnson Sirleaf, left, meet with Chief of Police Marc Armblah at the police academy in Monrovia, Liberia Thursday, Aug. 13, 2009
Rep. Anthony Weiner, (D-N.Y.), and his wife, Huma Abedin, aide to Secretary of State Hillary Rodham Clinton, are pictured after a ceremonial swearing in of the 112th Congress on Capitol Hill in Washington, Wednesday, Jan. 5, 2011. (AP Photo/Charles Dharapak)
From left, former President Bill Clinton, Secretary of State Hillary Rodham Clinton join the 2012 Kennedy Center Honorees John Paul Jones, Buddy Guy, Jimmy Page, Natalia Makarova, Robert Plant, Dustin Hoffman, and David Letterman for a group photo after the State Department Dinner for the Kennedy Center Honors gala, Dec. 1, 2012 at the State Department in Washington. | AP Photo
State Hillary Rodham Clinton
ormer Secretary of State Hillary Rodham Clinton addresses the Vital Voices Global Partnership 2013 Global Leadership Awards gala at the Kennedy Center for the Performing Arts in Washington, Tuesday, April 2, 2013. (AP Photo/Cliff Owen)
Secretary of State Hillary Rodham Clinton pounds her fist as she testifies on Capitol Hill in Washington, Wednesday, Jan. 23, 2013, before the Senate Foreign Relations Committee hearing on the deadly September attack on the U.S. diplomatic mission in Benghazi, Libya.
Gregory Hicks, former deputy chief of mission in Libya, testifies before the House Oversight and Government Reform Committee's hearing on the deadly assault of the U.S. diplomatic mission in Benghazi in Washington, Wednesday, May 8, 2013. Hicks described a 2 a.m. call from Secretary of State Hillary Rodham Clinton in the middle of the assault, amid confusion about the fate of U.S. Ambassador Chris Stevens and fears about the safety of additional American personnel. (AP Photo/Cliff Owen)