It is? Cite a credible source?

I'm thinking mainly of EFF, Bamford's books, and the Snowden releases. Are you claiming that parallel construction isn't SOP? Reaching way back, why do you think that the Weathermen got a pass in Chicago?

There are at least three levels of claim that can be made here.

1. The NSA passes along tips to FBI.

2. The NSA regularly passes along tips.

3. The FBI relies on NSA tips to do its job.