WASHINGTON — Barack Obama’s quest for historic health care legislation has turned into a parody of leadership. We usually associate presidential leadership with the pursuit of goals that, though initially unpopular, serve America’s long-term interests. Obama has reversed this. He’s championing increasingly unpopular legislation that threatens the country’s long-term interests. “This isn’t about me,” he likes to say, “I have great health insurance.” But of course, it is about him: about the legacy he covets as the president who achieved “universal” health insurance. He’ll be disappointed.Even if Congress passes legislation — a good bet — the finished product will fall far short of Obama’s extravagant promises. It will not cover everyone. It will not control costs. It will worsen the budget outlook. It will lead to higher taxes. It will disrupt how, or whether, companies provide insurance for their workers. As the real-life as opposed to rhetorical consequences unfold, they will rebut Obama’s claim that he has “solved” the health care problem. His reputation will suffer.