The Americans will always do the right thing... after they've exhausted all the alternatives."
"The debate about whether there is a global warming signal now is over, at least for rational people, said Tim Barnett, of the Scripps Institution of Oceanography in La Jolla, California. The models got it right. If a politician stands up and says the uncertainty is too great to believe these models, that is no longer tenable."
I have long been a believer, but not everybody is. Washington isn't, or says it isn't. However, I think that deep down they believe: believe and are trying desperately to avoid the reality and the associated cost. Read the article, Why global warming is not natural.