“So why can’t we have on our ballots for each state the right to vote for independence(secession)?”
When Texas joined the union, it kept the right to secede. I don’t think any other state has that right, but I could be wrong about that.
No, we reserved the right to divide into five separate states. I don’t really want to weaken Texas that way.
Regardless, our rights come from God not the Union. So if it comes to secession, we have the right to claim it. Whether or not the Union would allow us to secede without violence is another story.