DANIEL HENNINGER: Worse Than ObamaCare: Obama’s biggest failure is that he hobbled the U.S. economy.

For many Americans, the Obama leadership meltdown began five years ago. In fall 2008, the U.S. suffered its worst financial crisis since the Depression. That wasn’t Barack Obama’s fault. But five years on, in the fall of 2013, the country’s economy is still sick.

Unemployed middle-aged men look in the mirror and see someone who may never work again. Young married couples who should be on the way up are living in their parents’ basement. Many young black men (official unemployment rate 28%; unofficial rate off the charts) have no prospect of work.

Washington these days kvetches a lot about what Healthcare.gov is doing to the Obama “legacy.” Far worse than ObamaCare, though, is that the 44th president in his second term presides over a great nation that is punching so far below its weight that large swaths of its people have lost heart.

For five years, news stories have chronicled the social and economic deterioration in America of people with no jobs or weak jobs.

Here’s a headline over a Gallup report: “In U.S. Fewer Believe ‘Plenty of Opportunity’ to Get Ahead.”

Two from The Wall Street Journal recently: “Parents Serving as Emergency Support for Adult Kids,” and “Workers Stay Put, Curbing Jobs Engine.”

On Tuesday, the Organization for Economic Cooperation and Development put out a report saying the U.S. has become a threat to global recovery. The OECD ratcheted down growth estimates almost everywhere for the rest of this year. For the euro-zone nations: -0.4%; for “emerging” India it’s down to 3%; South Korea: 2.7%. . . .

In February 2009, he got $831 billion of stimulus spending. Not even seismographs can detect the results. Every speech he outputs about “middle-class folks” offers them the same solutions: more public spending on education, on public infrastructure projects and, even now, on alternative energy. As he tirelessly repeats what remain promises, the Labor Department’s monthly unemployment-rate announcement on Friday mornings has become a day of dread.

A normal post-recession growth rate of at least 4% would have made it possible for Mr. Obama and his progressive allies to chase virtually any pie-in-the-sky policy they wanted. Instead, the U.S. has fallen far off its normal 3.3% growth rate.

A U.S. president, faced with such devastating labor-market problems and persistently weak growth, should do anything—anything—that will give the American workplace more lift. Instead, he’s willing to entertain just one idea: more federal spending.

The other ideas don’t offer sufficient opportunities for graft and vote-buying.