Texas is different than the other states. It was an independent republic before joining....
Remember —— We entered by Treaty and kept our own lands. Our flag is to fly at the same height as the US flag. We can break up into other states. We are different!
The Republic of Texas specifically negotiated the right to split into as many as five separate states in the treaty joining the U.S. Too bad they didn’t think to negotiate a right to secede.
It probably never came up since before the Civil War it was always a presumed right of the States. Something about the consent of the governed in all of the original documents.
So was California; but alas Babylon, in the last 30 to 40 years we have just become a communist satellite of SPICKSICO.