[central_va]

Arkansas, Tennessee, North Caolina and Virginia did not leave the union until Lincoln called up troops to quell the "rebellion".

Nobody was tried for treason after the war, not even Jeff Davis who was being incarcerated and was asking for a trial.

[BroJoeK]

central_va: "Arkansas, Tennessee, North Caolina and Virginia did not leave the union until Lincoln called up troops to quell the 'rebellion."

You are correct. I should have made that clear.
Secession happened in two phases:

1. Phase I: Seven Deep South states seceded to protect slavery against "Black Republican" Lincoln.

2. Phase II: Four Upper South states refused to secede just to protect slavery, but felt forced once war began at Fort Sumter, and was declared on May 6, 1861.