Senate Finance Committee Chairman Max Baucus (D-MT) has announced that he will propose an overhaul of the nation's healthcare system that addresses GOP concerns such as blocking illegal immigrants from gaining access to subsidized insurance, urging limits on medical malpractice lawsuits, and banning federal subsidies for abortion. Under the plan, as many as 4 million of the 46 million people who are currently uninsured would be required to buy coverage on their own, without government help.