It was Representative Lee Zeldin’s right, we concede, to endorse whomever he chose in the race for the United States presidency. However, it was an insult to a large proportion of the people he is supposed to represent that he jumped aboard the Donald Trump train so quickly once his nomination appeared assured. By supporting Mr. Trump, Mr. Zeldin has appeared to hitch his political future to an incendiary demagogue, one who appears ready to throw the world into assured economic turmoil and closer to nuclear war.