In recent years, whenever I have had an opportunity to speak to an American audience concerned about anti-Israel activism and rising anti-Semitism, I point out that in these matters the U.S. is only a few years behind Britain and Europe. Look what is happening on the old continent, I say, and you can see your future. Reading Ruth Wisse’s important essay, “Anti-Semitism Goes to School,” is a reminder that the years change faster than my speeches—so much faster that I feel I can finally say, “Commiserations, America: you have caught up with us.”