Mitt Romney would try to repeal the Affordable Care Act, the biggest expansion of America's social safety net since 1965. But the President's re-election means that repeal of "Obamacare" is less likely than ever, and states have until this Friday to decide if they'll set up "exchanges" where 30 million Americans can buy subsidized health insurance. About one third of the states have already have said, "No," meaning the federal government will step in. Meantime, crowds of special interests are demanding change. What about the impact on Medicare and Medicaid and the rising cost of medical treatments?