Don't use US based domains if you suspect there might be a possibility in the future that some US agency or entity can seize you domains? Applies for any other jurisdiction.
You can use decentralized alternative domain name systems. OpenNIC is completely decentralized and there are a few projects which implement DNS on a blockchain, that would be the best solution to this kind of a problem.
Unfortunately, for me custom DNS providers aren't really useable unless I'd set up a fully configurable custom resolver, because with alternative DNS providers the IPs I receive for anything hosted by Akamai tend to be in a part of their CDN that has positively abysmal peering arrangements with my ISP.
