Senate Judiciary Committee Chairman Charles Grassley, Iowa Republican, released a criminal referral on Mr. Steele that shows the FBI believed it had corroboration for the ex-British spy’s dossier when it did not. The discredited dossier, the referral said, was the main piece of evidence cited by the FBI in the FISA application. Mr. Steele accused the Trump campaign of colluding with the Kremlin, with Mr. Page taking part. All involved deny the charges. Mr. Grassley’s referral, asking the Justice Department to look into possible criminal charges against Mr. Steele, reports that a Sept. 23, 2016, Yahoo News story reporting the same information was cited by the FBI to the judge as corroboration.