The Social Security Administration charges tax to Bob and then uses the money to make payments to Alice. For some years it was taking in more than it was paying out, so it used the rest to buy US government bonds, which is really just giving the money to Congress to spend on something else. Then Congress spent it on something else. It's all gone. All you're left with is a piece of paper that says the government owes itself money -- and not even as much of it as Bob was promised.
Now Bob is retired and expects his money back. But most of the money went to Alice and the rest went to Congress in 1994. There's no money. If you want money to pay Bob then you need to collect more taxes or sell more government bonds into the market.
So which of those things do you want to do? And if you want to use tax revenue, do you want it to be the regressive inefficiently duplicative social security tax or general taxes that don't charge higher effective tax rates to people who make less money?
I’m aware of the system, but all you’ve done is explain how the tradeoff works. It’s also how governments raid pension coffers to pay for something else like infrastructure (see Illinois). I’m not claiming I receive “my” money in SSI, but I am saying there is a point beyond which the system becomes untenable. At some there is a tradeoff because the money is gone. You could raise taxes or pay interest on a new loan, but again, that only works when there’s still confidence in the system. What happens when there is no longer confidence? Interest rates become untenable or the citizenry will not continue to support additional taxation.
Now I will agree that this is a contrived problem because SSI is a contrived system. We could just change the rules and make it continue to work, but that will come with tradeoffs.
The Social Security Administration charges tax to Bob and then uses the money to make payments to Alice. For some years it was taking in more than it was paying out, so it used the rest to buy US government bonds, which is really just giving the money to Congress to spend on something else. Then Congress spent it on something else. It's all gone. All you're left with is a piece of paper that says the government owes itself money -- and not even as much of it as Bob was promised.
Now Bob is retired and expects his money back. But most of the money went to Alice and the rest went to Congress in 1994. There's no money. If you want money to pay Bob then you need to collect more taxes or sell more government bonds into the market.
So which of those things do you want to do? And if you want to use tax revenue, do you want it to be the regressive inefficiently duplicative social security tax or general taxes that don't charge higher effective tax rates to people who make less money?