Sullivan now seems to be implicitly admitting... that Social Security [will not destroy the fiscal future]. But it's still projected to consume six or seven percent of GDP. Shouldn't we cut it anyway on grounds that it's simply too big and we want the money for other things? Maybe. But that's not an "entitlements" conversation. That's a conversation about how much money you need and where to get it.
I have never denied that Medicare is a far bigger fiscal problem than social security. But last time I checked, they are both entitlements and both insolvent.