Donald Trump's boast that if he had been president, the September 11 jihad terror attacks would not have happened because "if I were running things, I doubt those people would have been in the country," has been gaining him even more notoriety and cheers from foes of Obama's immigration policies. What Trump would do to prevent jihad terror attacks by domestic jihadis, or Sharia encroachment on American freedoms, however, is far less clear than his stance on immigration, and some of the things he has said about these matters should give even the most full-throated of his enthusiasts considerably less...