Alabama has outdone Arizona with a punitive crackdown on illegal immigrants that was scheduled to become law tomorrow. It's being held up temporarily by a federal judge, while Georgia, South Carolina, Utah, Indiana and other states wait to see if it reaches the US Supreme Court. With 12 million undocumented workers in the US and no federal reform, the big question is whether the Constitution allows states to act on their own. Meantime, immigration could be important in next year's campaign. We look at the President's record, his GOP challengers and the growing Hispanic vote.