When Ron Paul talks about repealing the income tax and replacing it with nothing, most people think it can’t be done. But at least on the state level, it can. In fact, there are nine states, including Paul’s home state of Texas, that don’t levy income taxes. Those states have far outperformed high-income-tax states on every measure of economic success. Now Oklahoma is poised to fully repeal its income tax and join the ranks of non-income-tax states.