See “US ‘opposes’ G8 climate proposals” (BBC News)
This is just another bit in the ongoing ignorance of common facts on climate change and blocking of actions to address by the US government.
The US government is not the same as the US as a nation. However the current Bush administration was elected by the people and do represent them in the world.
Some fact bids from the New York Times article U.S. “Rebuffs Germany on Greenhouse Gas Cuts“:
The United States, with roughly 5 percent of the world’s population, produces between one-fifth and one-quarter of the world’s emissions, according to government data.