[Exigence]

The way I see it, eventually all purchases will have to be made at government approved stores

This is a stretch that defies logic. Sorry, I can't see your "leap" from national sales tax to government-approved stores.

Are you forgetting that some states are already funded this way? I don't recall any of them requiring state-approved stores. Caution is good, but let's not be needlessly paranoid.

[palmer]

Those states typically overlook the new merchandise being sold tax free at flea markets. If they started to enforce the tax, those sales would move elsewhere especially if the tax is high.