They could also sue the local and state government to try to force them to enforce the laws on the books.
There’s several hundred years of legal history of state and federal governments being taken to court and made to stop or undo actions deemed to violate the law.
Usually "legal" means "following the laws", not "someone high up told me it was cool".
"The government" isn't a single unified entity. Texas has a long history of playing bullshit games saying "We can do this" and the feds saying "no you can't" and the courts have to solve it.
Texas insists that they have a legal right to secede. Any honest constitutional lawyer, and several founding fathers have addressed that point directly. There is no legal methodology within the context of the US system for any state anywhere to secede.
In exchange for being the world leader in spaceflight.
There aren't like, vast stretches of unprotected coastline they can pick from. It's ALL either protected or densely populated. If you want ANY spaceflight, you have to give somewhere, and this is essentially the only place in the continental US that works. If you say "not good enough" for Boca Chica, you're saying "no rockets can be developed in the continental US". Just be honest.
[1] Edit: day
From [0], "The coast here loses a football field of land every 90 minutes." An American football field is about 111% of an acre[1] which means, unless there's been a radical spike since 2021, you're off by ~19.2 acres or ~17.3 football fields an hour (if my calculation hasn't gone wrong.)
[0] https://earth.org/data_visualization/louisiana-shrinking-coa...
[1] https://huffsports.com/football/how-many-football-fields-in-...
I don't think this changes my thesis.
Invalid logic, pleas try again.