The only source you've given about this whole meddling affair is from the US Senate, one of the actors who are being accused of throwing up a smokescreen by a large portion of the US public. See there's this core principle called due process in the US and I'm not seeing what's chillingly plausible to you. I get really wary of people acting as if the whole issue is settled. All we have are the words of a few government agencies which lied consistently in the past.