Who's to say it doesn't go the other way? The US bans mining, and some European countries see an opportunity. They incentivize miners to move there on the provision that they set up near new and developing renewable projects, subsidizing the development of such projects by buying excess energy which would otherwise be wasted during periods of low demand, acting as a demand response system, and paying taxes on the bitcoin they mine.
I would love to see it. Maybe I am just too big of a pessimist but I don't see the EU going against Big Brother when it comes to big major decisions. That is, if we get to a point that bitcoin mining becomes such a huge affair for some reason. I have to mention the situation we have now with what is going on in Ukraine. If for some reason the US was pro-war and in support of Putin, I don't think the EU would be supplying Ukraine with weapons, munition, military vehicles, etc. to go against American interests.