Media Matters: "while Horowitz found flaws with the way the dossier was used to obtain FISA warrants, he did not determine that its usage was politically motivated."
http://archive.is/bjjam#selection-1011.142-1015.42
Is that true?
Nope! Horowitz explicitly stated he did NOT conclude political bias played no part in the FBI's FISA warrant applications.
Go to 5:45 in the video for Horowitz conclusion regarding political bias.