“Although the states had seceded the fort was still a sovereign territory of the US.”
The US government didn’t have the right to any territory. That got DC, 10 square miles. The land belongs to the respective States, and since SC left the union, the USA no longer had any claim to it. They had an obligation to leave, not fortify it. Fortifying a fort in a foreign land that has requested that you leave is an act of war.
That war’s over Toad. Let ‘er go. (I would tend to agree with much Of what you say but one thing bothers me. There was a significant part of the population who had no say as to how the states made decisions)
We have bigger fish to fry as our personal liberties are being destroyed on all fronts now.