As his reelection campaign gathered momentum in the spring of 2012, President Obama tossed a little rhetorical stink bomb at the opposition party. Needling Republicans for their intransigence on taxes and the federal debt, Obama said the 21st century version of the Grand Old Party would be unrecognizable to its own patron saint."Ronald Reagan, who, as I recall, is not accused of being a tax-and-spend socialist, understood repeatedly that when the deficit started to get out of control, that for him to make a deal he would have to propose both spending cuts and tax increases," Obama said. "He...