National Sales Tax?? Bring it on. I can avoid sales tax on a lot of items that I purchase by buying a lot of used items, bartering, etc. I can ultimately pay less in taxes - and I already have a shitload of write-offs on my regular taxes - making me believe that others would save even more than I could.
I also think that people wealthier than me, and especially the very wealthy would be thinking "that's fine. Nothing says I have to purchase items in the U.S."
Warren Buffet, who probably makes 1000, or 10,000 times more a year than most of the people here, could easily get away with paying only 10 or 15 times as much in taxes. Think about it. You purchase a $30,000 car. He could purchase THREE 100,000 cars which would result in paying only 10 times as much tax as you. The rest of his money goes into investments, without ever getting taxed, where he earns far more money in a year than most people earn in a lifetime. And, through the miracle of compounding interest - the thing that keeps the poor people poor (i.e. revolving credit cards), the rich become fantastically rich, because they don't spend the majority of their income & will earn tax free interest on even more income.
So, that brings up the question - if I, average middle class, think I can save money; if it's a given that the rich can save a fortune, who the hell is paying the bills for this country??