My apologies...
But since you asked, did anybody say, when the 10th Amendment was debated, "Wow, this will secure our right to secede unilaterally!" (or words to that effect in the language of the day)?
The right of secession is obviously included among "the powers not delegated to the United States by the Constitution, nor prohibited by it to the States," which "are reserved to the States respectively, or to the people [of the States]." If you disagree, would you care to cite a specific constitutional clause that prohibits State secession?
;>)
That is a little like saying your right to take money out of your bank account allows you to take money from other people's accounts as well.
A state's ability to exercise its reserved powers doesn't mean that it can simply negate the legitimate power of the federal government through a unilateral act of secession.
If you disagree, would you care to cite a specific constitutional clause that prohibits State secession?
As I and others have already said: the supremacy clause.
This is a tactic, right?
You simply ignore everything everyone else says to you and then pretend that you have proven your point.