It's not nonsense, it's the reality, any state that even attempted such a folly would be declared a martial law area and the leaders arrested and imprisoned.
Address the issue. Why is it ok for the original 13 colonies to secede from England but wrong for say, Florida or Wisconsin to secede from the USA.?
It wasn't OK, at least as far as England was concerned. They called it a revolt as have we. I have never heard the American Revolution referred to as the great secession.
Secessions are often not met with approval which begets wars. (OF REVOLUTION) Often hard to have one without the other.
If Texas or any one of our other beloved red states wishes to secede they have my blessing but I feel confident is saying THERE WILL BE CONSEQUENCES.
se·cede
   [si-seed] Show IPA
verb (used without object), se·ced·ed, se·ced·ing.
to withdraw formally from an alliance, federation, or association, as from a political union, a religious organization, etc.
re·volt
   [ri-vohlt] Show IPA
verb (used without object)
1.
to break away from or rise against constituted authority, as by open rebellion; cast off allegiance or subjection to those in authority; rebel; mutiny: to revolt against the present