However, Texas tried it already. It was one of the slave states that seceded and got its ass kicked in the civil war.

I’m not that ignorant of history to need to be informed about this …

but I think the only way they could get it to work without violence would be by starting some devolution movement and getting the US constitution amended to allow Texas in particular to secede and that would require a constitutional convention and the consent of the majority of the other states

I personally just don’t like centralism and don’t see secession as bad in theory. That, of course, means that not only a state should be able to secede from the union, but also any part of the state from it, etc.

Anyway, this is all not important. Healthy societies do well with any model (I’d say for a healthy society with any law there’d be no war in such an event). Unhealthy ones do bad with any model (even if there’d be laws designed to prevent war). Models affect their development and long-term “health”, though.