Put up checkpoints, barricade the roads and refuse to issue visas to leave their “country” and enter ours and charge tariffs on their exports.
If they want to play stupid games, let’s go all in. You don’t arbitrarily get to pick and choose what laws you will follow here in terms of protecting the general welfare.
I’m normally a mild social darwinist and don’t care if people do stupid things but viruses are not respectful of boundaries and what you do to yourself may spread to others against their will.
This country is dying a slow death by stupidity. I fear the madmen have won and you can now pick and choose your version of reality with no need to consult actual facts and the opinion of the guy pumping out your septic tank but who can’t explain the difference between a virus and a bacterium is just as good as that of a doctor who has spent a lifetime studying epidemics when it comes to Covid.