Secession was not traitorous
It was about how you make things illegal when you don't have votes to change the law or Constitution.
Guy, there's moral and legal.
Slavery was "legal".
The Holocaust was "Legal"
The oppression of the Gulags was "legal".
the thing was, the South seceded because an abolitionist won the presidency. They seceded over a truly immoral thing.
Immoral, but a legal, Supreme Court upheld, Federal law supported institution that was the engine of the agrarian South.
There was not enough support to change and ratify the Constitution....not enough abolitionist votes.
You just dont make something illegal without following the law. Even abhorrent matters.