@maxdancona,
I didn't mean to imply that Americans are "more susceptible to human foibles than anyone else." What I mean is that in other countries, GW deniers do not commend a majority in any mainstream party, right or left. Elsewhere, they are always marginal, and have no political weight. Only in America do they represent a serious political force (not to mention one in power right now).
Edit: and I attribute this fact to a disinformation campaign funded in majority by US fossil fuel companies, for the specific purpose of blocking regulations that could hurt their business in America, or elsewhere for that matter.