In today's speech on deficit reduction, President Obama said Social Security should be treated separately — at some later time. But Rick Perry's talk of a "Ponzi scheme" and "a monstrous lie" have made America's most popular government program a possible presidential campaign issue next year. Does Perry's attack make him unelectable, as Mitt Romney claims? Will Republicans in Congress push for privatization? Should the income cap on Social Security taxes be raised? What about the retirement age? Should benefits be reduced before young workers retire?