When the tax code had those high rates, it also had many exemptions and deductions that are no longer in it. No one ever paid 70% or 90% or anything close to that. Those exemptions and deductions were put in the code by rich congressbeings in order to help themselves and their contributors. Its good that they are gone and that we now have reasonable rates and a less discriminatory tax code. Returning to those high rates would force congress to reinstate the deductions and exemptions in order to protect themselves and their cronies. It would accomplish nothing.