And have we not done or do the same? If we catch them, bet they have diplomatic immunity, just like we might. Traitors are traitors. Key is that they do not injure American citizens. Best they not do it, nor get caught doing it in the US. Best we don’t get caught doing it either. What happens in England is not our problem and we should butt out.
Whatever floats your boat. What happens to an ally is our problem as well.