This week I wrote a column on a notable shift by political and media figures on the Hunter Biden scandal toward a last line of defense: the addiction defense. This shift is most obvious with President Joe Biden who spent years insisting that his son “did nothing wrong,” even bizarrely claiming that “no one has suggested that my son did anything wrong.” That defense was picked up by the White House. Then it changed as prosecutors reportedly moved closer to criminal charges and the President no longer denied that his son did anything wrong but rather that he was an...