That's true, but SS is pretty much setup just like a ponzi, it absolutely must have people paying in for it to pay out.
"Ponzi"?? REALLY?? No.
The special-issue Treasury bonds in that Trust Fund carry with them real obligations of the U.S. Treasury to hand over cash for Social Security to pay its beneficiaries. Contrast that with a typical Ponzi scheme, where the scheme's assets are completely phantom, and you can see that those real investments make Social Security
farsuperior to a Ponzi scheme.
Second, Social Security's accounting is about as honest as any accounting based on projections can be. Its trustees are actively telling you that it is running out of money. On top of that, Social Security's website explicitly tells you that the program likely
won't be enough to cover your costs in retirement. Social Security tells you what's going on, warts and all, and it
wants you to invest around its shortcomings. A Ponzi scheme, on the other hand, will lie through its teeth in its accounting and projections to try to encourage you to "invest" more in it.
Third, Social Security is a
mandatory program for nearly all U.S.-based wage-earners. The money coming in to pay benefits will keep coming in unless there's a tremendous shift in the law. When Ponzi schemes collapse, they often collapse quickly after they're uncovered as scams, because people stop contributing new money.
Fourth and finally, Social Security has a multidecade history of being patched up by Congress. When it started, Social Security's tax rate was 2% (half paid by you, half paid by your employer), while today it's 12.4%. Similarly, Social Security taxes were originally levied on your first $3,000 of income, while today's taxes are taken out of your first $117,000. That's a substantially higher tax rate on twice the income base after adjusting for inflation. Additionally, since the mid-1980s, your Social Security benefits themselves can be taxed if your total income level is high enough, with a huge chunk of that tax money helping to shore up the system.
Those Congressional patches have already been applied to bolster Social Security, and chances are good that Congress will come up with other sorts of patches to keep the program running in the future. Having Congress behind it gives Social Security a far better foundation than
any Ponzi scheme in history.