PHILADELPHIA, PA – SEPTEMBER 10: Former Secretary of State Hillary Rodham Clinton (C) receives the 2013 Liberty Medal from Jeffrey Rosen, president and CEO of the National Constitution Center as host Elizabeth Vargas applauds September 10, 2013 in Philadelphia, Pennsylvania. Given annually, the medal aims to recognize leadership in the pursuit of freedom. (Photo by William Thomas Cain/Getty Images)

PHILADELPHIA, PA – SEPTEMBER 10: Former Secretary of State Hillary Rodham Clinton receives the 2013 Liberty Medal from Jeffrey Rosen (right), President and CEO of the National Constitution Center as host Elizabeth Vargas applauds September 10, 2013 in Philadelphia, Pennsylvania. The Liberty Medal was established in 1988 to commemorate the bicentennial of the U.S. Constitution. Given annually, the medal honors men and women of courage and conviction who strive to secure the blessings of liberty to people around the globe. (Photo by William Thomas Cain/Getty Images)