New York Times: The White House and its allies in the Senate intensified their campaign Tuesday, in the face of some determined opposition, to advance a bill that its supporters say will reduce global warming while making the United States more secure. “When the starting gun sounded on the clean energy race, the United States stumbled,” Energy Secretary Steven Chu said on Capitol Hill. “But I remain confident that we can make up the ground. When we gear up our research and production of clean energy …