Kudos to Margaret Brennan of CBS for asking Adam Schiff on Sunday about his release of phone logs of his political opponents. Mr. Schiff dismissed any criticism, and his reason is revealing about the balance of power in Washington.

“The blowback has only come from the far right,” Mr. Schiff said. “But look, every investigator seeks phone records to corroborate, sometimes to contradict, a witness’s testimony.”

Yes,...