Actually, we need to reduce the number of net tax consumers. The problem with a national sales tax on top of the income tax is the funds raised by the sales tax would be used to feed the DC beast instead of paying down the debt.  Gas taxes are earmarked for infrastructure but half the money is used in slush funds.  FICA taxes are collected for retirement security but are put in the general fund and IOUs are issued.  Until our government shows the ability to use the people's treasure wisely, they shouldn't be trusted with another dime.