Justice Department inspector general Michael Horowitz will testify Wednesday before a Senate committee about his blockbuster report on the early stages of the Russia investigation, stating that the probe was legally justified but also detailing "significant concerns" with some of the FBI's activities.

Former FBI director James Comey reacts to the release of the Justice Department's inspector general report, concluding that the FBI's investigation into Russian election interference was legal and unbiased.

Less than 24 hours after Justice Department Inspector General Michael Horowitz released his much-anticipated report on the origins of the FBI's counterintelligence investigation into Russian interference in the 2016 election, Attorney General Bill Barr sat for an interview in which he disputed many of the report's conclusions while offering very little evidence for why.