James Clapper, Director of National Intelligence for Barack Obama is a known and proven liar, so doubt everything he might say. He had lied before and will continue to do so. NSA was spying on millions of Americans which is illegal, continues today, and James Clapper Director of National Intelligence told Congress that the NSA was not.
If they weren’t behind it, they certainly had the data. Now the difference here is that FBI and CIA have direct access inside the NSA databases. So, they may be able to go directly in there and see that material there. And NSA doesn’t monitor that. They don’t even monitor their own people going into databases.