I like Cain but I have a big problem with his 999 plan. The 9% corporate tax is fine (although 0% would be better). But the 9% income tax hurts seniors if it taxes, as I think it does, social security as income. Seniors don't have regular income tax or social security tax savings to balance the increase. Plus the 9% national sales tax is in addition to all state and local sales taxes and includes everything from food to new houses. This will particularly hurt people that are on fixed incomes. I doubt that 999 would ever get through Congress, but to me it shows that Cain hasn't thought through his positions well enough.