[scpolitician]

And neither does the Constitution mention secession. Therefore the 10th Amendment applies: “The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.”

[fortheDeclaration]

No, the 10th amendment is just saying that the powers not given to the Federal government are reserved to the States.

There was never a provision in the Constitution for a State to leave it peacefully.