Yes they believed in states rights but. yet they did not believe in individual rights. I.E. the Twenty Negro act of 1862. Then they passed it from twenty down to 15. Then the conscription act...
So which, according to our founding document was of the most importance?
Those that you are talking about are the 6% that owned slaves and controlled government. Then, as now, there were those who didn’t pay attention. It’s a shame there wasn’t a “Walk Away” movement in 1860.