A forthcoming report by the Justice Department inspector general will look into the FBI’s formal handling of the Steele dossier and its launching of a counterintelligence investigation of the 2016 Trump campaign. Far more consequential, though, was the FBI’s informal role in allowing itself to be used to inject the dossier into the political sphere to spark the Russia collusion folly.

And where is the similar report on the CIA under John Brennan? His promotion of the Russia collusion canard was bad enough. Unexamined is his...