The Dred Scott decision was corrected by constitutional amendments. Of course if you had enough support to correct SCOTUS error by amendment, you wouldn’t need to secede.
My point is, SCOTUS decisions are the end all be all final word on ANY subject. I am of the belief that any state can secede at any time. It’s simply withdrawling from a contract. The federal government has violated that contract and hence, the other parties can depart said contract.
Nowhere in the Constitution does it expressly forbid the states from seceding, nowhere does it even remotely come close to hinting at secession as being forbidden. Hence, the beloved 10th amendment rides in and saves the day. But to some people, simple logic is as complex physics.
Really, which Constitutional amendment is this?