Senate Environment and Public Works Committee Chair Sen. Barbara Boxer, D-Calif, center, rear, presides on Capitol Hill in Washington, Thursday, Nov. 5, 2009, as the committee voted on the climate bill with. Empty seat at left represent Republican members of the committee. AP Photo logo AP Photo 1 month ago

Senate Environment and Public Works Committee Chair Sen. Barbara Boxer, D-Calif, center, rear, presides on Capitol Hill in Washington, Thursday, Nov. 5, 2009, as the committee voted on the climate bill with. Empty seat at left represent Republican members of the committee.