"But 'gross' in fairtax lingo means INCLUDING the fairtax. So it is in fact 23% inclusive or 30% exclusive. So it will in fact add 29.87% to all their non-educational purchases including salaries and benefits. Of course the states will save the SS tax on salaries. "
Sorry, but you are wrong also. That's the very contention that all of you FairTax opponents have been making and it is flatly wrong as I said in #723.
You'd better study the formulas in the lead-in paper which clearly show you to be wrong. All the levels of government would save the 7.65% ER FICA portion as you mention, though, as well as that same portion on educational wages so, in fact the effective tax would be less than 23% as you're hinting at.
Just because you say it means squat. Show me in the bill where government salaries are treated different than other 'gross payments'. I have not seen such a distinction pointed out in the bill. The fairtax taxes 'gross payments' and 'gross payments' include the fairtax.