President Trump took the unprecedented step of inviting the press to his opening negotiations with Congress on immigration reform. Especially following as it did in the wake of widespread reports that the president was clinically senile, his performance was brilliant. He defined the terms, controlled the room, counseled compromise, and made a public commitment to do the same – so much so that it threw his own supporters into a tizzy. The press was then dismissed from the discussions because real negotiation tends to get messy. As Otto von Bismarck once said, “If you like laws and sausages, you should...