It's a conclusion that you can reach from publicly available financial information, transportation logs, and behavior of the accused. It's not like there's nothing there, it just hit a dead-end because you have a situation where the complicit and co-conspirators are now responsible for the sentencing aspect of proceedings, so the house is basically going to sit on the continuance of the investigation. Additionally a lot of the relevant investigations were handed off to the relevant state prosecutors so the accused can't pardon himself and his underlings.

My point is, it's not so much a propaganda campaign as an obvious juicy news story to be written about and it's predictably not reported on lately because nothings happening out in the open right now, but watch by October 2020 it'll be a thing again, because it'll be politically expedient again.