Take health-care reform. Ten years hence, perhaps, it will be seen as the signal achievement of the Obama years. But for now, it’s an unpopular law that took a divisive year to enact, that liberals and conservatives loathe, that is full of bureaucratic and fiscal IEDs, and that drained attention from dealing with the economy. If you disagree, look at Obama’s speech last week in Cleveland. In 47 minutes, he mentioned health care for about 25 seconds.