Re: Yeah right
It doesn't even need to be the FBI
Anybody can file in federal court, in say east Texas, and demand all the defendants documents under disclosure, with this they could demand all the documents held overseas.
So Billy-Bob either on his own, or paid by say a US oil company, could get a judge to hand over all BPs data if they were stupid enough to host it on a service that used American servers.
An American drug company could get a single local judge to rule that the NHS violated American anti-trust and all its patient data should be available for him and his marketing chums.