San Francisco Chronicle: One of the risks to passing AB32, California’s groundbreaking climate-change bill, was that the state would be locked into a lonely and expensive fight while the rest of the nation polluted, happily and without hindrance, for years. And while it’s true that major action at the federal level is highly unlikely until at least 2009, it’s also true that California’s law has emboldened the U.S. Senate to push further on climate change than it ever has before. For the first time, national …