According to an article in The New York Times (Jan. 3, 2010), “American cities and states — the largest of which have carbon footprints bigger than those of most nations — have quietly been making serious commitments to curb emissions. Instead of finding reasons to do nothing, Congress should build on these actions to fashion a national response to climate change.”

http://www.nytimes.com/2010/01/04/opinion/04mon2.html