Senator Ted Cruz's upset victory against Donald Trump has robbed "The Donald" of his stock answer to any criticism from rivals-- that he is winning and his critics are losers. Now that he has lost, Mr. Trump may finally have to try to come up with some substantive arguments about the complex issues facing this country, rather than simply boast about the great things he will do when he becomes president. Trump may turn out to be like the Wizard of Oz, after the curtain was pulled back to reveal the real man who was been busy projecting an awesome...