Flynn is a full signed up cooperating witness whose agreement would require him to comply with all subpoenas. Even Barr can’t stop that.

Dear @TheJusticeDept Barr: FYI below.

Also, isn't Michael Flynn the guy who lead chants of "lock her up"?

Let me check my notes ....

Yep, he's that guy.#ThursdayMotivation https://t.co/RDO2qqthTm

— Ted Lieu (@tedlieu) May 16, 2019