It would seem this act that Roberts did can be known by many. Why not put some investigators on it. Discover it and ask
for his resignation along with a full disclosure by Roberts himself. One of those deep sorrow kind of things.
If he has been blackmailed, then let him talk about it to the nation.
That's a dream, but you forget the political ecology of Washington DC is an intricate balance of everyone knowing dirt on everyone else. They, with rare exception have dirt on each other. Not just ordinary 'paid to have a parking ticket ignored' event (that's a perk, anyway), but the sort of Federal hard time career-ending dirt (unless they are Democrats, then it's called a resume).
Recall, the first thing Hillary did was grab over 900 FBI raw data files on Republicans, both the powerful and the up-and-comers, which provides a wealth of rumor and gossip, as well as some hard info that can be turned to political advantage. They even know where to look for the poster children to make 11th hour allegations in election years.
They carefully avoid digging up each other's graveyards. Once it is out, there's no leverage.
Anyway, that delicate balance of not spilling the beans on people who might spill beans back (or have a mentor who will) is one of the reasons nothing seems to ever get rolled back, even when the opportunity is presented, not to mention why people like Epstein ("service providers" whose only power is having dirt on everyone) wake up dead in the morning if they are caught, lest they spill the beans they have.
Despite us knowing full well that frequent flyers for such providers have abundant reason for being relieved at the thought of convenient accidents, plane crashes, and yes, even 'suicides', the obvious layer yet unturned is whether they were the only, or even the most motivated to celebrate the unfortunate passing of some potential bean-spiller in a botched robbery, accident, of fire.
It's more pervasive than most would like to believe, and both sides of the aisle are involved. We just tend to blame the 'other guys'.
So, it is likely the people still surviving who have any dirt on Roberts either would go down as a result of releasing that dirt, criminally in court, or criminally, in their untimely but 'convenient' demise, with the exception of those who value it for leverage or potential reprisal. One way or another, their lips are sealed.