@Arthur_500 There is no way to look at this text that goes on and on about how important slavery is, how unfair it is that the national government doesn't live up to its promise to allow slavery and how there's a tension between slaveholding and non-slaveholding states, and draw the conclusion "so, it wasn't actually about slavery".
en.wikisource.org/wiki/Declara…
It's a long preamble, here's why the states united, bla bla, then it gets to the core. The other states promised we could have slaves, but they're not catching them for us when they escape.
"This stipulation was so material to the compact, that without it that compact would not have been made."
It then goes on to say that soon an abolitionist party will come to power and they will come for our slaves, so we're out.
It. Was. About. Slavery.
Any claim to the contrary is plain misinformation.