Now, it’s entirely possible (if clearly not probable) that Mr. Trump asked Jeff Sessions to step down and appointed Mr. Whitaker in his place temporarily simply out of disgust with Mr. Sessions, whom he has been publicly ridiculing for months, and the president bypassed Mr. Rosenstein because he was uncomfortable with him in the top post. If that’s the case, it’s yet another argument to recuse. By not interfering with the Mueller probe, Mr. Whitaker allows the president and his family the opportunity to be exonerated. Take action now, and the findings are tainted. Mr. Trump would only be giving fuel to the House Democrats and a potential impeachment push.