But wasn't it Bush's "fault" that we didn't join the Kyoto Protocol?

The Associated Press: UN official hopes for US role in climate change

But even under an Obama administration, the U.S. is not likely to join the Kyoto Protocol, said de Boer. Emissions of greenhouse gases in the U.S. have risen about 14 percent since 1990 levels, he said, whereas they would have had to decline by 6 percent if the nation was part of Kyoto.