Hearing is one thing, but there is no proof as of yet, was Gates blackmailed, was anyone else blackmailed? could be but again, no proof either way, it is all speculation. Now you bring up a rumor, nothing verified on the Obama administration, it might be true but it might not and all anyone has is pure gossip. Trump, Clinton, Obama, and we can list more but no proof, no evidence, nothing but pure conjecture.
If there is alleged charges, we need to start prosecuting, European nations are now looking into the allegations as well and have arrested two so far, I think we are on the right track.