There has never been a general sales tax at the federal level, even before the income tax, so your "past performance" assertion was self-serving tripe.
It is to be noted there has been however federal income taxes in place since the 1860's, and retail sales taxes nor any form of general sales tax has been added on.
And you figure, with no support whatsoever in history, of both being laid at the same time in the near future?
OL, the only tripe around here is the "self-serving" tripe coming from you.
Is is to be noted that your red herring has nothing to do with your absurd falsehood about "past performance".
A.G.
We are discussing reality and you are discussing FairTax fantasy land. The land of make-believe. You need to grow up and come back to the real world. It's really not so bad here, and our economy is humming along nicely.