NBC News has previously reported that before Mueller, the former FBI director now leading the probe, was appointed, federal prosecutors had convened grand juries as part of the investigations into former National Security Adviser Michael Flynn and Trump's former campaign chairman Paul Manafort.
NBC News on varem teatanud, et enne kui Mueller, kunagine FBI direktor, kes juhib nüüd seda kriitilist uurimist, ametisse määrati, olid riigiprokurörid endise riikliku julgeoleku nõuniku Michael Flynni ja Trumpi endise kampaaniajuhi Paul Manaforti tegevuse uurimise osana vandemeeste kogusid kasutanud.