I actually think it's pretty simple. Most of the Squirrels have a "good thing going" in their own mind with the present tax system and believe that they will not be able to evade the FairTax so easily and will therefore NOT have as "good a thing going" under the FairTax.
I believe it is strictly a matter of self-interest ... mostly financial self-interest. It may very well be (and probably is) unjustified since almost ALL economists predict the "rising tide that lifts all boats" via greatly increased economic activity with the FairTax. They're merely shortsighted.
Thanks, and good to hear from you.