I rarely write about American politics. Here in Israel, existential national threats prevent me from dwelling on America’s problems. In Israel, Arabs butcher our thirteen-year-old daughters in their bedrooms and gun down our brothers and fathers, and the impotent leadership responds in typical fashion— with powerful speeches to comfort the bereaved. So naturally the demise of America cannot take up much of my time. But that doesn’t mean I’m disinterested. I am concerned with America’s welfare. As a Jew with a sense of history, I appreciate the haven America provided us throughout the last few centuries, when most countries offered...