yes, I would support a Sales tax ONLY if it gave a rebate to those deemed "poor"
i think however, the reason why a sales tax is DOA is that it would for ALL people to confront the reality of what their government is COSTING them.
the Income tax most people don't see. In fact, large portions of it are obscured as FICA, FICA Match, FICA-M, and FICA-M Match.
I would bet yout that fewer than 1 in 10 Americans could give you a definition of "Marginal Tax Rate" and even fewer of them could tell you what their own personal "Marginal Tax Rate" is.
If we set a national Sales tax at 21%, then everybody (With the exception of the poor) will know with certainty that their Marginal Tax Rate is 21%.
Either way you slice it: You're gonna pay it. I just want more "Openness" (That's "Glasnost" for you liberals)