I wonder how far that tax goes. For instance, last week I was in Florida. I purchased a few things; but the sales tax is less than that in Ohio. Technically, i’m supposed to declare the difference, and pay it. That is totally unenforceable of course.
Until the time they determine you are a threat to the system. That's when the enforcement happens. Remember the quote from "Atlas Shrugged":
“Did you really think we want those laws observed?" said Dr. Ferris. "We want them to be broken. You'd better get it straight that it's not a bunch of boy scouts you're up against... We're after power and we mean it... There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws. Who wants a nation of law-abiding citizens? What's there in that for anyone? But just pass the kind of laws that can neither be observed nor enforced or objectively interpreted – and you create a nation of law-breakers – and then you cash in on guilt. Now that's the system, Mr. Reardon, that's the game, and once you understand it, you'll be much easier to deal with.”
And if someone from Florida buys something in Ohio, will he get a refund on his overpayment?
No, I guess not.