Many of the important registries (particularly .com) are also based in the US, so presumably they can also be forced to do the same, even if the registrar is Canadian.
I have long wondered how far this jurisdiction goes. The DoJ could presumably not do much if they want to pull a domain name under a non-US ccTLD because in most cases neither the registry nor the registrar are US-based.
But the root zone itself is based in the US, in the sense that US persons manage and control it. Just as they could pull bar.com if foo.bar.com hosts something they don't like, could they pull .uk or another ccTLD if they are targeting bar.co.uk?
I have long wondered how far this jurisdiction goes. The DoJ could presumably not do much if they want to pull a domain name under a non-US ccTLD because in most cases neither the registry nor the registrar are US-based.
But the root zone itself is based in the US, in the sense that US persons manage and control it. Just as they could pull bar.com if foo.bar.com hosts something they don't like, could they pull .uk or another ccTLD if they are targeting bar.co.uk?