OK, I agree, there are many forms of secessionist movements all over.
WA, OR, CA has them every year.
The secessionist movements that tend to work are typically unincorporated urban areas that incorporate to gain local control.
Mostly the schemes are too grandiose and lack a thorough financial/tax plan and have not gone anywhere.
Frankly, the South is too heavily embedded with Northerners to ever have a cohesive states rights movement.
There is a very popular bumper sticker in the TX: “We don’t care how you did it up North.”
I have no general opposition to states splitting into more states. But forming another country is just not right.
Your family objected to slavery protection laws. Your family resented the notion of having to live under an immoral law.
I resent having to live under immoral abortion and homosexual laws. I also resent having to live under a system where people who do not pay into the treasury have an equal say with those of us who do.
It is impossible to fix these things with the Democratic process, so what course is left to conscientious objectors of immoral laws?
Seceded states could certainly do that (forming another country) if they wished. Once seceded, the Constitution and its prohibition about treaties, alliances, and confederations with other states or countries no longer applied to them. Whether this was "right" or appropriate for them to do a matter of opinion. It was probably safer for them to join with other seceded states at that point in time.
The Constitution did not prohibit secession and did not require approval from any state, Congress, Court, or the Federal Government for secession. Nor did it give power to the Federal Government or to individual states or to groups of states to stop other states from seceding. Indeed, IMO the Constitution wouldn't have been ratified if such approval had been required or such power had been given.
No, "forming another country" us totally right, just as our Founders did, under two but only two conditions: