> “In fact, we don’t monitor emails. That’s what kind of assures me is that what the reporting is is not correct. Because no emails are monitored now,” [Senator] Chambliss said. “They used to be, but that stopped two or three years ago. So I feel confident that there may have been some abuse, but if it was it was pure accidental.”

They've essentially admitted that Greenwald's information is accurate, they're just claiming that Greenwald is late to the party and they've already dealt with the problem in secret.

It's interesting, because if you go back over the testimony I'm very sure that all of the NSA denials will be in the present tense. So it's quite possible that the NSA has not been lying at all, they've just been counting on us to fill in "That has never happened" when all they've said is "we do not [currently] do that."