Associated Press: Democrats are fighting over control of the House Energy and Commerce Committee and the outcome could affect President-elect Obama’s efforts to limit the heat-trapping gases blamed for global warming. Obama has said he wants to act quickly on climate change. But bipartisan support could be tested if liberal California Rep. Henry Waxman unseats the chairman, Rep. John Dingell, D-Mich. The committee’s top Democrat for 28 years, Dingell is an ally of important of automakers and electric …