Perhaps another thing to think about is the small matter of what other countries (like Russia and/or China) will do if the U.S. goes that way. It’s not like we will be in any shape to fight a conventional large scale war at that point.
Would the various parts of the former U.S. be willing to come to each others’ aid if one of them was attacked?
There might be a lot of animosity left over from the “separation” and “drawing borders” part of the break up for the resulting separate parts of the country to want to spend blood and treasure helping out each other for some time to come after that...
You bet! It would be all “downhill” really fast ... the “former U.S.” would be “carved up like a turkey on Thanksgiving” ... really fast by those other countries coming in here under the pretense of “protecting” certain groups that have “requested protection” — doncha know ...
The U.S. would become “colonized” by the rest of the world, in short order ... hoo-boy!