I don’t see.
“The rebelling party had willfully and freely entered into the government from which it was rebelling:
RW: no. ACW: yes..”
Sort of like a marriage that didn’t work out.
True. But when you want to end a marriage you have to go through a legal process, usually the courts. So the proper way for South Carolina to leave the Union would have been to sue in federal court. Not grab every piece of federal property they could get their hands on and then fire on an America Fort.