Before the Civil War, colonization schemes and black laws threatened to deport former slaves born in the United States. Birthright Citizens recovers the story of how African American activists remade national belonging through battles in legislatures, conventions, and courthouses. They faced formidable opposition, most notoriously from the US Supreme Court decision in Dred Scott. Still, Martha S. Jones explains, no single case defined their status. Former slaves studied law, secured allies, and conducted themselves like citizens, establishing their status through local, everyday claims. All along they argued that birth guaranteed their rights. With fresh archival sources and an ambitious reframing of constitutional law-making before the Civil War, Jones shows how the Fourteenth Amendment constitutionalized the birthright principle, and black Americans' aspirations were realized. Birthright Citizens tells how African American activists radically transformed the terms of citizenship for all Americans.

"The standard public debate over the Fourteenth Amendment goes something like this. Critics of the Supreme Court's interpretations of the Fourteenth Amendment over the last several decades believe that the Court has used the Amendment's provisions for "due process of law" and "equal protection of the laws" as open-ended vehicles for judicial policymaking, whether on abortion or gay marriage or a host of other issues. Indeed, it is difficult for someone sympathetic to the result in the 2015 gay marriage case Obergefell v. Hodges to read the Court's opinion and get the feeling that what the Court is doing is law. The case was decided under the rather nebulous concept "substantive due process," the idea that the Fourteenth Amendment's injunction that no person shall be deprived of life, liberty, or property without due process of law is not merely about process as its terms might suggest, but also about "substance"--Namely, that the clause protects unwritten, unenumerated fundamental rights or prohibits arbitrary and oppressive legislation"--