Joe Biden had repeatedly denied that he was going to pardon his son Hunter for his gun and tax evasion convictions or commute what was shaping up to be a substantive prison sentence. On the Sunday evening after Thanksgiving – at a moment when the American public’s attention was decidedly elsewhere – he announced he had changed his mind. “There has been an effort to break Hunter - who has been five and a half years sober, even in the face of unrelenting attacks and selective...