Paul Ryan's Medicare Divide and Conquer

To sum up Yglesias' point: replace Medicare with a private voucher program for people 54 and younger and you eliminate their motivation to support keeping it for people 55 and older. The same would apply to means-testing Social Security: it eliminates any personal interest motivation of those means tested out of Social Security from preserving it for those who still receive it. Instead of an insurance program, all of the sudden it becomes Welfare for the old. And we know what happens to Welfare in this country.