I would like to know as well but I think they are relying on the existing DMCA, which I think have similar provisions: domain seizures but no server manipulation.

AIUI the DMCA does not provide for domain seizures. Those are done under a creative interpretation of the property seizure laws that were written to allow the government to confiscate property used in the commission of a crime, (e.g. seizing and auctioning off cars that were purchased with drug money).

Yea I think you are right. I was probably thinking of takedown notices (which are actually more like the censorship grecy was asking about)