"No we don't do these things"
"There's no such program"
"We wouldn't be able to do such things even if we wanted to"
"OK we do some of that, but not as much as Snowden says"
"Snowden's making it up, he's a liar"
"OK we do that, but not to Americans so its OK"
"OK, we do it to Americans too, but with proper oversight"
"OK, the people supposedly overseeing the programs don't know the whole story"
"I want to make clear that America is not interested in spying on ordinary people."
"I'm satisfied that the intelligence agencies were obeying the law at all times"
Now, why don't I believe you. Especially as a non-American I'm apparently not an "ordinary person"