Since the late 1960s, American Jews have been uneasy. This uneasiness is surprising; perhaps it is unwarranted. After all, probably no Jewish community in world history has been, at the same time, so numerous, so prosperous, so influential, so secure, as have American Jews during the past 30 years. American Jews have surpassed in these respects the remarkable position achieved by the Jews of Germany in the Weimar Republic. Tak- ing account of their much smaller numbers (one percent of the German...