My guess is that any such documents that may have been signed would have been under duress, and more accurately be described as THREATS to their liberty, lives and the safety of their families.
Well I have faith that our transparent govt would never do anything to threaten them. NOT! Implied, at least, that they may want to consider NOT talking about the video caused event. Uh, what video? Nobody ever said anything about a video.
They know the powers that be will KILL their wives, children, siblings and/or parents if they tell all they know. That is my opinion.
The Clintons have many tentacles that are ready to do their bidding at any time and place.....EVIL to the bone and beyond.