Silly goose, they don't have to "repeal" them; it's just as effective if they just "ignore" them. That's how they're operating on immigration enforcement and probably many other areas. No one complains and the result is as though they were repealed. Voila! Problem solved.
If it doesn't work with the laws of physics, then PRETENDING it works is the next tactic. And once again, no one will complain, at least not loudly.