If anyone has ever done research on the US and future states, you'd know stuff like this is eventually inevitable. I see Texas breaking up before California though. With South-East Texas becoming more and more Democratic, such as San Antonio, Austin, and Houston but the rest of the state remaining idiotically Republican, plus the Texas law that would let them break apart more easily than another state, it could happen.
There are also movements to separate NYC from the rest of New York, for Washington DC to become a state, Puerto Rico, Colorado and Arizona want to split in half, Michigan could separate with Superior becoming it's own state, we could have 60 states by the time our lives are over
I mean, we got two states in 1959 and that's not even 50 years ago.