Big Oil, Et Cetera...
Simple. Bush and his minions were connected in some way to Big Oil, chemical concerns, old fashioned heavy industry, and some were just perverse in their hatred of environmentalists. Nearly all of these folk would stand to lose alot of money if we followed the Kyoto Protocols.
Now that we are poised to gain a new President, I think that Kyoto will not be a bad word in the new Administration.