Every, last, one of them.
Poor WCH is acting like he doesn't know how organized crime roll-ups works, and forgot that the DOJ kept some of the objectives given to Mueller secret.
If they are approved by the deputy AG to be kept under Mueller's umbrella, then they are believed to be tied to that investigation. To recap, since you've forgotten, maybe after the mid-term whipping in the House:
Their goal is to investigate the periphery, round up criminals that are useful, pressure them to tell the truth, working their way up as far as it goes. This is routine for white collar crimes that often require cooperating witnesses, otherwise you've often got not other evidence to rely on. If they made a conspiracy over a secure line that was not recorded, or in person, or in code, how are you gonna find that smoking gun? You're not.
- Michael Flynn - Trump campaigner and National Security Advisor
"Flynn pleaded guilty in December to lying to the FBI about his conversations with Russian Ambassador Sergey Kislyak before President Donald Trump's inauguration.
Of course, that was the plea agreement, there were more crimes discovered, presumably some involving his son as well, but Flynn quickly changed his tune to cooperation after facing charges."