My friends at the AIPAC conference are shocked, shocked that so many fellow attendees gave Donald Trump an ovation last night. Just like my Republican friends are shocked that so many fellow Republicans have voted for him. Why the surprise, though? Is it at all surprising that a rightward-tilting, nationalistic, often-anti-Muslim pep rally of 18,000 people (many paid to be there by a handful of billionaires) would applaud a rightward-tilting, nationalistic, often-anti-Muslim leader of pep rallies? The weirdest shock of all, though, came from AIPAC itself, whose leader apologized this morning for Trump’s having insulted President Obama. Choking back tears,...