Cruz says the nomination of Trump would mean an "absolute trainwreck" in November. But, Cruz, 45, with a future in the party, would be foolish to walk out as a sore loser, as Nelson Rockefeller and George Romney did in 1964. A Cruz rejection of a nominee Trump would mean the end of Cruz. The elites would hypocritically applaud Ted's heroism, publicly bewail his passing, then happily bury and be rid of him. Cruz, no fool, has to know this. If the nomination is taken from Trump, who will be 70 in June, he has nothing to lose. And as...