“Trying to point out weakness in an established fact...”
We disagree that your position is the same as an established fact.
“A historically recognized legal work shows the States do have and always have had the ability to leave the Compact at will.”
That contains the assumption the point in contention is true.
“If a State is bound by its own voluntary act, it can be unbound by it.”
Do your voluntary acts mean nothing? Does your voluntary word, promise or agreement mean nothing? If you habitually voluntarily unbind yourself from them at whim, then they don’t.
How does that work when you sign a contract or other legal paper? If you were about to take the witness stand in court and you voluntarily took the oath to tell the truth, the whole truth and nothing but the truth do you think you could voluntarily unbind yourself from that oath as soon as you sat down? Do you think nothing could happen if you did so?
“Otherwise, the association is no longer ‘voluntary’, but compulsory.”
Well, maybe yes. When you break a contract made voluntarily, some sort of compulsion may be in order.
Everyone is free to pursue Tucker's work and draw their own conclusion. He was quite clear in his statement. If you don't consider the writings of “America’s Blackstone” to create an established fact, that's your opinion.
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How does that work when you sign a contract or other legal paper?
We're not talking about 'other legal papers' , we're talking about the Constitution.