The Yale Project on Climate Communication has periodically runs surveys finding that there are essentially six types of American beliefs on human-driven climate change. The 2010 survey included questions on cap-and-trade-legislation and policies for fostering more efficient vehicles or renewable energy technologies.
Even Americans alarmed about global warming were at best lukewarm about the carbon legislation. Nearly all the groups were enthusiastic or at least marginally supportive of the energy initiatives, even when they included mandatory steps and came with some cost.
Relevant Dot Earth posts: http://j.mp/dot6americas