The American people are taxed on their hard-earned income. Then, they are taxed on everything they buy with their hard-earned money. People are even taxed when they buy used items that have already been subject to taxes. People have to pay taxes on inheritance (money that has already been taxed when initially earned).
END ALL DOUBLE TAXATION. Make it illegal for states to charge sales tax on used items and used vehicles. End death tax and inheritance tax, and any other tax on money or goods that has already been taxed.