Secession’s possibility was taken away from the States at the point of a gun back in 1865. The Constitution was perverted then by a challenge to the SCOTUS and led by Salmon Chase and a Northern packed SC stating the North’s invasion of the South was legal. We were screwed then by holier than thous and are going to get screwed again by the holier than thous.
For secession to succeed the new republic will have to develop nuclear weapons as soon as possible and build an arsonal of about 200.
The legal basis for secession is murky. If you view the Constitution as a compact or legal agreement among the members to the compact, then if any member of the union violates the terms of the agreement, then the compact is broken for all the members and, hence, they can secede. In this regard the southern states had the right to secede since the northern states were trying their damnedest to abrogate the “peculiar institution” of slavery and so violated several clauses of the Constitution. Opposed to this position is the idea stated in the preamble to the Constitution that the document is on behalf of “we the people,” which means the Constitution is a national document applying to all people and all states and not a compact. However, the Supreme Court has ruled that the preamble to the Constitution does not have the force of law. And over all this is the fact that secession is not prohibited by the Constitution, which implies that secession is permitted. The only sure way to deciding the matter would probably be a Constitutional Convention.