Department of Justice (DOJ) Inspector General (IG) Michael Horowitz concluded in his report that political bias did not play a role in the FBI's decision to start an investigation into possible Russian involvement in the Trump campaign. However, under questioning by Sen. Mike Lee (R-UT), Horowitz appeared to admit that political bias was possible a factor in the subsequent abuse of the Foreign Intelligence Surveillance Act (FISA) process to spy on Trump campaign aide Carter Page.