[drewbug]

It was a major topic of discussion at the Confederate States Constitutional Convention; the fire-eaters lost: https://dn720307.ca.archive.org/0/items/journalofcongres00co...

> In thus constructing the fundamental law, of course, a struggle has occurred in the secret sessions of the Montgomery Congress, in which those refusing to close the door against the reception of anti-slavery States have achieved a victory.

https://www.cw-chronicles.com/blog/admission-of-northern-sta...