Over a year ago, I asked in this space whether U.S. attorney John Huber could impartially and fully investigate FISA court abuses and other matters in which his boss, Deputy A.G. Rod Rosenstein, was up to his eyeballs. In "Can Huber Investigate His Boss Rosenstein?," I asked: While it is reassuring to note that A.G. Jeff Sessions has climbed down from the back side of the milk carton, where his missing visage had been hiding, long enough to appoint Utah U.S. attorney John Huber to independently investigate claims of FBI abuses in surveilling the Trump campaign and other matters, one question...