“That’s it?”
That’s a funny reply.
The fact an amendment was proposed to “make secession ILlegal” in the Constitution proves in fact such WAS legal.
No it doesn’t. All it means is that an amendment to an amendment making that explicit failed to pass. Despite that failed amendment within a failed amendment, the Supreme Court still found secession to be illegal.
Nonsense. A belief held by a minority of senators that the amendment was needed does not mean that secession WAS legal. The belief held by a majority of Supreme Court justices that secession as practiced by the Southern states was not Constitutional carries far more weight.