Yesterday, the Congressional Budget Office came out with a report assessing the budgetary impact of something many conservatives have supported, raising the Medicare eligibility age from 65 to 67. What they found was that the change would save far less money than had previously been assumed: only $19 billion over the next decade. The main reason is that many of the people no longer eligible for Medicare would be eligible for either Medicaid or insurance subsidies through the health exchanges, so the net effect on the federal budget would be small.
But more important than that, this is an opportunity to remind ourselves that when government is doing something worthwhile, doing less of it isn't a good idea even if it saved a lot of money. And if cutting back only saves a modest amount of money, it's a really bad idea. You know what else would save a lot of money? Eliminating the United States Navy. But I'm guessing that most conservatives think having a navy is a good thing. Medicare is a spectacular success, one of the greatest things this country has ever done. Letting fewer people get on it is like the Miami Heat saying, "We won the championship last year, so what we need to do now is get rid of LeBron James."