Holman Jenkins on entitlement reform.

"Our long postwar prosperity has left an unsustainable accumulation of government-spawned Rube Goldbergism, Social Security and Medicare most of all.

"But what kind of reform? Democrats seldom say exactly, hoping susceptible voters will assume their promised benefits will be funded unto eternity. And yet Mr. Obama's objectives are perfectly amenable to a genuinely reforming approach."

It will be Democrats he has to convince, if he has a mind to.