assurances from mark zuckerberg in the interviews he's now done in the last 24 hours that facebook has this under control? are you satisfied that this is a problem in the past? >> in. i'm actually concerned that we have -- we're at the tip of the continent actually as far as how social media companies were weaponized. i asked facebook when they testified before the house intelligence committee, can you tell us at this hearing that you understand fully how your platforms were weaponized and i didn't really get a straight answer. i think the fact that we're learning more this week is all the more reason that an audit needs to be conducted independent of facebook, but i think by an independent commission or the house intelligence committee. >> congressman swalwell, nbc news has learned the formeder fbi director, andrew mccabe, had authorized an investigation into whether the attorney general