Afghan President Hamid Karzai (2nd L) shakes hands with Senator John Kerry (D-MA) during a luncheon hosted by the Senate Foreign Relations Committee on Capitol Hill in Washington on May 13, 2010, as Senator Barbara Boxer (D-CA)(left) and Senator Joseph Lieberman (right), look on. Sens. John Kerry, D-Mass., and Joseph Lieberman, I-Conn., at a news conference, with industry leaders, announcing their climate change bill on Capitol Hill in Washington, Wednesday, May 12, 2010. Now instead of Climate Change or Cap & Trade, they are calling it The American Power Act.... WASHINGTON - MAY 04: Senate Finance Committee member Sen. John...