George W. Bush, Dick Cheney, and Mitt Romney's father all released many years' worth of their income tax returns and nobody found anything wrong. Yesterday, Romney said he never paid less than 13 percent in federal income taxes, but insists that two years is the limit. Today, the manager of the Obama Campaign, Jim Messina, sent an open letter to his Republican counterpart saying if Romney released five years' worth, the Democrats wouldn't ask for anything more. Would that be enough to reveal the real story of Romney's finances? David Cay Johnston was a Pulitzer Prize-wining tax reporter for the New York Times.