> If the US bans it on national security grounds, there is NO WAY that any of the NATO countries will not ban it immediately.

I'm sorry, but that's not how this works. These other NATO countries are independent countries with their own legislature and parliaments, many of them bound more by EU rules than by current US tendencies or laws. Sure, the US might try to pressure NATO countries to follow suit, and some of them might, but it's far from given.