Which Republican Hired Fusion GPS for Golden Shower Dossier Perhaps Low Energy Jeb or Flamed John McCain?

John McCain would certainly have been motivated to bring down candidate Trump by hiring Fusion GPS at the beginning of the 2016 campaign to dig up dirt on him, colluding with the Russians to make-up stories about Trump, yet the best guess is that the mystery Republican who started is was Jeb Bush, about the time he was branded Low Energy.