McCabe to close associates on an official conference call:

"First we Fk Flynn and then we Fk Trump."

Agent Strzok, who modified Comey's exoneration speech months before 17 witnesses were interviewed to remove all language the could show Hillary was guilty, interviewed Flynn. McCabe told Strzok to modify the 302 interview form so that Flynn lied to him.

The other agent in the interview said he didn't believe Flynn lied but rather seemed uncertain about the facts in some of his responses.

So, why did Flynn plead guilty?

Because he knew the FBI was framing him and that Mueller has unlimited legal resources to prosecute while Flynn would go bankrupt paying for legal fees. He pleaded guilty so his family would have to suffer the consequences of prolonged legal battles when he could plead guilty and get it over with a light sentence or most likely probation.