A groundbreaking history of how modern American citizenship has worked-and not worked-for Jews in the United States The history of Jews in the United States is often told as if they immigrated, gained citizenship, and almost immediately achieved full legal rights. Yet this story fundamentally misses how citizenship rights worked for Jews and countless others who arrived on American shores. In Who Is American? Lila Corwin Berman draws on case law, statutes, and debates to argue that both the laws of American citizenship and Jews' position in them changed repeatedly across the twentieth century. Courts, policymakers, and the public persistently asked what it meant to be Jewish under the law. Were Jews a race, a nationality, a religion-or some combination of each? The answer carried profound legal consequences. Not only did it determine Jews' citizenship status, but it also affected the rights they could exercise. Just as significantly, the meaning of the categories under law changed over time, affecting Jews' self-understanding, their political ideals, and their relationships to other groups of Americans. Who Is American? tells a history that resonates powerfully with today's high-stakes battles over citizenship and rights. As Berman concludes, citizenship law has always been better at posing questions about the terms of belonging than at providing any ultimate resolution. The tangled story of Jewish citizenship demonstrates the limits of law and explains why the United States continues to fall into new and, often, unsettling debates about who is American.