Chuck Schumer is seldom thought of as an oracle of political precognition, but we have to hand it to the longtime Democratic senator from New York: On Oct. 17, at the Alfred E. Smith Memorial Foundation Dinner in New York, Schumer seemed to realize, before many of his colleagues and cohorts in the Democratic universe, that he would have to get used to the presence of then-former President Donald Trump once again. At the annual shindig in support of Catholic charities, Schumer found himself seated mere inches from Trump, who was speaking at the podium in what was, for him, a relatively genteel speech. He wished good luck to the mayor of New York City in a pending criminal matter, and he reminisced about accompanying his builder father to Al Smith dinners of long ago....