Fifty years ago, Detroit's Motown music enthralled America. But generations of federal taxpayers will be singing the Detroit blues as other cities follow its example and start dumping their health care liabilities onto Uncle Sam. As Shikha Dalmia explains, the Motor City plans to use Obamacare to help cover its public pension crisis. Detroit officials regard this as a "win-win" for the city and its retirees. But what they don't say is that it will be "lose-lose" for the country and federal taxpayers.