Mitt Romney's selection of Paul Ryan was supposed to be a problem for the Republicans. So said a chorus of chortling Democrats. So said a gaggle of anonymous seasoned Republican operatives. All of which was echoed gleefully by mainstream media. The problem, these purveyors of the conventional wisdom all said, was Medicare -- to be more specific, the future changes in Medicare set out in the budget resolutions Ryan fashioned as House Budget Committee chairman and persuaded almost all House and Senate Republicans to vote for. But while Democrats licked their chops at the prospect of scaring old ladies that...