Good luck, they’d have to ban nuclear subs and no nation wants to throw that protection away.
No, that doesn’t follow. I’m pretty sure nuclear subs – or nuclear aircraft carriers, for that matter – rarely dock at commercial ports, and there’s no reason (other than hypocrisy, which is not relevant) that a country can’t decide to bar nuclear ships from commercial ports while still allowing them at military naval bases.
Al Gore, too (never mind the EC vote, which he also would have won if not for the first Republican coup).