You’ve swallowed the Koch Bros propaganda
Those “IOUs” are government bonds, just like the govt bonds in your IRA or 401k. You would never call the bonds in your own accounts, “worthless IOUs”. But that’s the rhetoric that the Koch brothers came up with to propagandize people against Social Security
In any case, Social Security payouts are calculated by the actuaries at levels tilled to the proceeds from the FICA tax. Wherever those proceeds end up, the amount of those proceeds is what determines how much can be paid to recipients. Trump foolishly is launching election season by reducing the amount of FICA proceeds - without specifying any alternative funding source. You may laugh at my concerns, but this is setting him up for problems with senior voters who rely on Social Security and who will now be subjected to ads about how he’s messing with its funding sources.
LOL!
Whatever.
I’ll give you some links (since no one else will!).
You can make whatever arguments you want then.
Some are incapable of seeing that a cut in the payroll tax will be marketed by the Democrats as a direct attack on Social Security. And anyone or anything in any threatening social security will be utterly destroyed politically.
For a lot of people social security and its viability is more important than the Wall, china, ‘climate change’, China, and Russia, all put together.