Sen. Elizabeth Warren, D-Mass., center, accompanied by Secretary of State Hillary Rodham Clinton, right, make statements introducing Senate Foreign Relations Chairman Sen. John Kerry, D-Mass., seated at left, to the committee during his confirmation hearing to become secretary of state, replacing Clinton, Thursday, Jan. 24, 2013, on Capitol Hill in Washington. (AP Photo/J. Scott Applewhite)

Sen. Elizabeth Warren, D-Mass., center, accompanied by Secretary of State Hillary Rodham Clinton, right, make statements introducing Senate Foreign Relations Chairman Sen. John Kerry, D-Mass., seated at left, to the committee during his confirmation hearing to become secretary of state, replacing Clinton, Thursday, Jan. 24, 2013, on Capitol Hill in Washington. (AP Photo/J. Scott Applewhite)