1) Former CIA Director John Brennan gave an interview on the Maddow Show in August 2018.

It was highly interesting & contained several notable admissions.

So much so, that an article sprung from that interview: https://www.theepochtimes.com/did-brennan-admit-to-using-reverse-targeting-to-spy-on-the-trump-campaign_2628435.html

2) Brennan discussed his "concerns" that US citizens were working w/Russia:

“I was very concerned and aware that the Russians were trying to leverage U.S. citizens in order to achieve their objectives in the presidential election”

3) Brennan also discussed how the CIA was gathering info on these US citizens whom the CIA "suspected" of working w/Russia and passing that information along to the FBI:

4) Brennan then explained how that collected "information" was shared via a "Fusion Center" at the CIA that also involved the FBI and and NSA:

5) A few problems.

The information Brennan is discussing doesn't sound like "incidental collection" - it sounds targeted.

It also appears to have come via Section 702 collection - not FISA.

Although many loopholes exist, US persons cannot be primary targets of 702 collection.

6) Minimization procedures are intended to protect any U.S. person information that is incidentally acquired in the course of Section 702 collection.

But the FBI can query acquired Section 702 data. And they could do so using U.S. person inquiries – without a FISA warrant.

7) It was also around this same time that Former NSA Director Mike Rogers became aware that outside contractors for the FBI had been accessing raw FISA data since at least 2015, and initiated a formal compliance review in April 2016.

8) Notably, despite Brennan's efforts, he never actually determined that any US Citizens were actually working w/Russia:

Maddow's facial reaction to this admission was priceless. Not the answer she was anticipating...

9) But this lack of determination didn't stop the FBI from pursuing a formal FISA Warrant on Page.

In fact, it's possible that obtaining a FISA became critical - due to the prior collection of information…

10) Recall the comments made by Devin Nunes in March 2017:

"I recently confirmed that on numerous occasions, the intelligence community incidentally collected information about U.S. citizens involved in the Trump transition..."

More:

11) Nunes today on Fox:

"People should go and look at those footnotes that are now public. Likely we're going to have more criminal referrals based on these."

12) Nunes cont:

"It never made sense that you would have a political operative, like the Clinton Campaign, working w/Fusion GPS, hiring a former foreign spy. That they know was supposedly getting information from Russian Intel folks. That doesn't pass the straight-face test."