I'd hate to think of the legal implications of hosting information the government deems confidential, within the United States. I imagine there will be some fallout over this for people mirroring in the US.
http://wikileaks.nl/mass-mirror.html
I've contacted my VPS host for clarification on their terms of service regarding such a mirror.
"In any case, your account wouldn't be suspended over it - we'd simply forward you any takedown notices we might get as usual and give you ample time to respond (you'd only get suspended if you ignored dmca or other takedown notices)."
Very reasonable. So, feel free to give them your money :) <http://www.ramhost.us/?page=virtual-dedicated-server>; (Great deals, but not very many instances available).