Baker's testimony.
I found this interaction to be the moneyshot regarding the frame up of POTUS.
They changed their protocol and knew their actions were not logical while allowing Bruce Ohr (DOJ) to funnel information (dossier) from his source (Christopher Steele/Fusion GPS, Glenn Simpson) to the FBI.
Further, Baker had two separate sources: David Corn (reporter) and Michael Sussman (attorney/HRC campaign).
Baker was in the chain of custody.
Very shady