On Tuesday night, Senator Ted Cruz, R-TX, won a sweeping victory over 2016 Republican presidential front-runner Donald Trump in Wisconsin. Cruz won virtually every demographic, nearly 50 percent of the vote and the vast bulk of the delegates. It's becoming increasingly clear that Trump could fail to reach the necessary 1,237 delegates in order to win the nomination outright on the first ballot at the convention. If so, there's no way he wins the nomination at all. That's because Trump has made himself radioactive. If Trump had disappeared from the American political scene after his big win in Arizona, he'd...