They do need a subpoena to access your data on AWS, they do not when they are just sniffing it off the wire en masse as it passes thru a third party system. Kin

They do need a subpoena to access your data on AWS, they do not when they are just sniffing it off the wire en masse as it passes thru a third party system. Kind of like you not having privacy when you mail a postcard and expecting that no one should read it. Also the NSA wouldn't be subpoenaing data from amazon anyway it would be someone like the FBI in this case.