SACRAMENTO – Gov. Arnold Schwarzenegger is taking on just about every major interest group in California in his audacious effort to bring universal health care to the nation's biggest state: unions, small business, doctors, hospitals, insurance companies, conservatives. Whether the former Hollywood action hero can prevail and get it passed – or get it passed in still-recognizable form – is far from clear. “I think it's very difficult in its present form,” said Bill Carrick, a Democratic strategist. “He's got universal Republican opposition to it, and the stakeholders are all going to get hit with a tax – doctors, hospitals...