Now that Jack Smith has left the building — meaning, “separated” from the Justice Department — the question that begs for an answer is about his final report. The report was, says a filing Mr. Smith made to Judge Aileen Cannon, submitted January 7. We comprehend that such a report is required to be submitted by all special counsel. What’s the logic of it, though, given that the target of Mr. Smith’s investigation is largely immune from federal charges?