Wouldn’t Houston rejoin Texas?
I initially imagined it like that, but I decided to add some variety to this post-SGW world.
Some people on this thread imagine that the Second Texas Republic would definitely still be existing past the beginning of the 21st Century, but I tend to disagree. It's possible for the U.S. to reunite them, or they could differentiate them as a historical reminder of how Texas used to be a traitorous state.
Sort of like how West Virginia and Virginia are not unified in OTL.