The FairTax Rebate is also uniform and allows for the FairTax rate to be applied uniformly above a certain amount of spending, hence constitutional.he is not at all true.Go to their own rebate chart and you will see that a family of four, husband and wife with 2 kids will receive MORE than a family of four with a single mom and 3 kids.The Fairtax is a fraud beginning with the way the rate is being