May 2017 marks the 90th anniversary of Buck v. Bell, a Supreme Court decision involving the legality of sterilizing a young woman for eugenic purposes. The eugenics movement that led to the case reaching the Supreme Court was a popular movement in the United States in the first decades of the 20th century. It enjoyed the support of many religious Americans, including prominent ministers, rabbis and priests. The religious response to eugenics illuminates the relationship in America between science and religion.