[Parley Baer]

“Prior to that agreement, Fusion GPS’s research into Trump was funded by a still unknown Republican client during the GOP primary.”

John McCain???

[Rockingham]

Jebra is my guess.

[FreeReign]

“Prior to that agreement, Fusion GPS’s research into Trump was funded by a still unknown Republican client during the GOP primary.” John McCain???

Probably Jeb during the primaries.

McCain was used later by the Clintons and Comey later to an FBI investigation.