> Social Security and Medicare taxes have always been mixed in with regular income taxes
No, they never had. In fact, 47% of the population doesn’t pay income taxes at all, just payroll taxes, which are capped rather than progressive (anti progressive, actually).
The government does borrow money via IOUs to fund things like military mostly, but they also borrow money via treasuries, are you saying China’s export surplus should be mixed with regular income taxes as well?