Texas, Louisiana, Mississippi Alabama and the Florida pan handle. If you want to live someplace that denies science, vaccines, masks, has open carry and shootouts like the Wild West, teaches nonsense like dinosaurs living in the Garden of Eden with Adam and Eve, no abortions even in the case of rape or incest (and trust me, with that band of mutants, there will be incest), shitty healthcare, shitty education, low tax thus, no social services then Mutant America is for you.
The hard part for the rest of us is that we will need to provide relocation money for those who do not want to live there. There will be a cost involved, but well worth it. Once shithole America fails, they will have to earn there way back in to the Union with specific rules in place. Probably as one big state so that we can monitor their progress.
Give them what they want and let them see the errors of their ways. No federal payments they can figure it out for themselves. They are taker states anyway, so it suppose it may be possible that the relocation money could be offset by the savings of the leach states.