Deputy Attorney General Rod Rosenstein and FBI Director Christopher Wray want Congress to trust them about the FBI’s actions in 2016. That would be easier if not for daily proof that they continue to play games when redacting documents.

Senate oversight Chairman Ron Johnson exposed the latest unjustified blackouts in a June 8 letter to Mr. Wray. The Wisconsin Republican is one of several Chairmen objecting to the FBI’s excessive redactions and its refusal to even supply the standard “log” with justifications for each redaction....