“If this does happen, We’ll move there!”
You will not be alone! I’ve been talking about this for a number of years.
A couple of questions do come to mind though. What of the U.S. military personnel in TX? Would they desert? Or, would they be called back to the “U.S.” for other duties?
Would the TX National Guard become the TX military?
This would be first priority, IMHO. You would have to establish security on the borders, not only on the south, but west, north and east as well.
http://www.txsg.state.tx.us/ The Texas State Guard