Obvious question - If the growth of Medicare and Medicaid threaten to bankrupt the country, why not just reform those programs first before we swallow nationalized health care?

Extra - From Greg Mankiw's blog: "An obese friend is told that he should eat less and exercise more. Instead, he adds an extra serving of cake after dinner. But don't worry: His cake-eating plan is calorie-neutral, as he promises to exercise more as well. "