the Fair Tax

[Koga No Goshi]

The problem I see with a sales tax based system is when you have a economic slow down you will instantly cut federal revenue, more so then if you tax income.

I oppose it on its regressive nature, I consider that sufficient reason to be against it, especially since a "simple tax system", while psychologically appealing, is equally simple to evade. However you are correct-- this system would, IMHO, only work well when the economy is doing well. Every 20 or 50 years you'd be gutting the government or going into steep deficit everytime an economic downturn hit.