What most people don't know that even if the IOUs (non-market interest bearing T-bills) represented real money, SS would still be unsustainable. We don't have enough workers to support the system. By 2030 we will have only two workers to support every retiree and one in five Americans will be 65 or older. SS is a Ponzi scheme.
Why Social Security is a Ponzi Scheme
For what it’s worth, I think this situation is why GW Bush and others supported expanding guest worker programs as well as trying to legitimize the illegal aliens already hear. More workers on the rolls means more taxes to postpone the problem.