I think there would be opposition because a lot of adjoining states would want to go with Texas and a lot of people and industry would want to relocate there. The socialists can't have their "utopian society" if they can't steal from someone else's pocket.
So if California wants to go I say let them and a peaceful way of leaving will have been established.
Uh...no...I don't want to give liberals anything. If they don't like a constitutionally run country, they can leave. There's too many resources in California to cede it to a bunch of nuts. I don't want another enemy country on our border.
Anyway, there's nothing in the constitution that allows states to secede. That issue was settled in 1865.
Californian's seceding because they don't like Trump is all blather. Nothing will happen.