The United States has banned polygamous immigrants since the late nineteenth century. Enacted amid isolationist fears that an influx of polygamists would cause moral deterioration, the polygamy bar remains a resolute, if often overlooked, feature of modern immigration law. The current immigration scheme continues this tradition, rendering immigrants who intend to practice polygamy in the United States categorically ineligible for legal-permanent-resident status. As a result, the immigration bar allows polygamous men to immigrate with a wife of their choosing and the children from each of their marriages. Their other wives, however, are deemed inadmissible to the United States. This Note explores the immigration bar’s disproportionate effect...