George Bush took a hit in the last part of his second term, but The Won is sinking way beyond that, into the same range as Nixon forty years ago.
All we need now is for a personally very disillusioned member of this regime, on the order of John Dean, to step out of the shadows, and spill everything that has been going on in secret. Maybe Edward Snowden could have already filled that slot, but he ran away from the US before he could be really effective.