greenwald said it proves that nsa can see everything you can do. >> with no overnight, no supervision, prior to search, enter an ip address, they can discover your internet connections. >> i sitting at my desk certainly had the authority to wiretap anyone. >> the more it sounds like hollywood the less likely it is to be true. the idea you can sit at your desk i want to wiretap joe lewis and peck at the computer and sudden lly hear my phone calls. >> reporter: the implication that nsa collection is arbitrary and unconstrained is false. the nsa says that there are multiple checks and balances to