Actually I would suspect a third possibility. It's the same problem that happens when a general visits a military base and makes rounds. Everything that is dirt

Actually I would suspect a third possibility. It's the same problem that happens when a general visits a military base and makes rounds. Everything that is dirty will be swept under the carpet ahead of his visit so that he only sees what those on the base want him to see. This is such a common social phenomena that it should be obvious to everyone, especially those in positions of power and administration. If he showed up unannounced at the NSA, with a bunch of pointed questions and could talk to any NSA employee at will one on one, then he would be much more likely to learn the truth. But to show up announced, meeting with specific people on a predetermined schedule with a previously announced goal, he will only be told what they want him to know. credit: Hanlon's Razor.