New Order your paperback copy of Remembering the Battle of the Crater.
Supreme Court Justice Antonin Scalia has publicly stated that according to his reading of the Constitution a state does not have the right to secede.
If there was any Constitutional issue resolved by the Civil War, it is that there is no right to secede. (Hence in the Pledge of Allegiance, “one nation indivisible”).
Read the story and Scalia’s letter here.