Texas is the only state that has a legal right to declare independence. If they want to save themselves while they still can they probably should. We’d be screwed but there would still be a Texas.
“If there was any constitutional issue resolved by the Civil
War, it is that there is no right to secede.”
— Antonin Scalia, late Supreme Court Justice
https://www.texastribune.org/2016/06/24/can-texas-legally-secede-united-states/