President Obama signs the New START Treaty, in the Oval Office of the White House in Washington, Wednesday, Feb. 2, 2011. Standing, from left are, Energy Secretary Steven Chu, Defense Secretary Robert Gates, Secretary of State Hillary Rodham Clinton, Senate Foreign Relations Committee Chairman John Kerry, the committee's ranking Republican Sen. Richard Lugar, Senate Intelligence Committee Chairman Dianne Feinstein, Senate Appropriations Committee ranking Republican Thad Cochran  and Senate Foreign Relations Committee member Jeanne Shaheen. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

President Obama signs the New START Treaty, in the Oval Office of the White House in Washington, Wednesday, Feb. 2, 2011. Standing, from left are, Energy Secretary Steven Chu, Defense Secretary Robert Gates, Secretary of State Hillary Rodham Clinton, Senate Foreign Relations Committee Chairman John Kerry, the committee's ranking Republican Sen. Richard Lugar, Senate Intelligence Committee Chairman Dianne Feinstein, Senate Appropriations Committee ranking Republican Thad Cochran and Senate Foreign Relations Committee member Jeanne Shaheen. (AP Photo/Carolyn Kaster)