AP reports here at Yahoo News: COPENHAGEN – A showdown between the world’s two largest polluters loomed over the U.N. climate talks Tuesday as China accused the United States and other rich nations of backsliding on their commitments to fight global warming.

The problem is China knows that Obama represents a democracy, and whatever promises he makes at the conference he may not be able to keep. He needs to get his signature ratified by both houses of congress, good luck. The Chinese can simply ram the agreement down their people’s throats, but Obama needs to get it past James Inhofe. Not likely.