I have,
@Sovereign States , although you won't admit it.
If secession was clearly not prohibited in the Constitution, if all accepted the idea that the Union was a mere Compact of States instead of a Federal Union, if uni-lateral secession was so clear a legal and constitutional option, then where is the Confederacy?
Your proof is in reality, not a stubborn belief that the invisible means the right exists. It didn't then, it doesn't now and that is why the Confederacy never existed past it frantic, bloody four years. It wasn't accepted as a constitutional right by even the majority of the citizens of the nation it tried to steal from.
Point wherever you like, insist on whatever you believe.
The hard fact is, the right to secession wasn't decided on in the Constitution, but the battlefield.
The results are in.
Unionblue