Long known as the third rail of American politics, the social security insurance system – the mother of all entitlement programs – recently survived its first real challenge in decades. Some would privatize SSI to the extent that people would be allowed to invest some of their SSI tax in the stock market, managing it like other retirement-based savings, rather than have to go the general government fund. Others would replace the existing system altogether for the youngest generations. Still others say the fund needs a basic restructuring including new eligibility rules and smaller payouts. All agree, however, that the fund for retirees will run out of money at some point, the disagreement lies in when.