[Non-Sequitur]

How can a state government expel another from the federal Union through unilateral action by the first at the state level?

Let me ask this again. What section of the Constitution prevents the states (plural) from expelling another state? Why could not the states, through a majority vote of their members in Congress, expel Massachusetts? What specifically forbids them from doing so? Where is this power explicitly denied the states? And if not denied them, then doesn't the 10th Amendment allows them to do it?

Like #3, you get points for originality.

I could never even hope to match your posts for originality.

[hirn_man]

Its right there in the 10th amendment. Its intuitive! Can't you see it? Its right beside the power of secession!