How race was defined across the states and why it matters today.
The one-drop rule is often imagined as an antebellum invention—the mostly phenotypical inheritance of slavery, fully formed and operating before the Civil War. The legal record disagrees. In the antebellum South, racial classification was usually fractional: Virginia’s 1822 statute defined “mulatto” as one-quarter African ancestry. Other states drew the line at one-eighth.
The one-drop rule is a Jim Crow extension, codified in Tennessee in 1910, in Virginia with the Racial Integrity Act in 1924. Championed by Walter Plecker, a eugenicist registrar who declared that anyone with any African ancestry, however remote, was “colored.” Alabama, Georgia, North Carolina, Mississippi, and Oklahoma all followed by 1931. The law was a product of the same eugenics movement that produced forced-sterilization statutes and the racial restrictions of the 1924 Immigration Act, written by figures who believed whiteness was a purity, a legal definition of what was, thus, not white.
Before 1970, Louisiana’s standard was even more aggressive: anyone with “any trace” of African ancestry was classified as Black—the full one-drop rule, identical to Virginia’s 1924 Racial Integrity Act. The 1970 statute was framed at the time as a liberalizing reform. Legislators argued they were creating a clear, administrable threshold to replace the indefensible “any trace” standard. A legal sophistication, if you will. The reformers proposed 1/32 as a compromise—generous enough to release some long-passing families from formal classification, restrictive enough to appease the political coalition supporting racial classification.
The result was, by any reasonable measure, absurd. A person with thirty-one White great-great-great-great-grandparents and one Black one—born around 1820, six generations removed — was, if standing within the confines of Louisiana, Black, by operation of law. This is the standard that classified Susie Phipps.
In 1977, Phipps, a Louisiana woman who had lived her entire life as White, applied for a passport and discovered her birth certificate classified her as “colored.” Louisiana’s 1970 statute defined as Black anyone with at least 1/32 “Negro blood.” The state traced Phipps’s ancestry 222 years to an enslaved woman named Margarita, her great-great-great-great-grandmother. Phipps sued. Louisiana repealed the 1/32 law mid-litigation, but it applied the old classification to Phipps anyway. She died in 2012 still legally Black.
Race, in more modern terms, post-Civil Rights era, is typically viewed as a badge of honor. Everyone likely knows someone who knows someone who passed for White, for various reasons, and it ignites internal reflections on race and identity, on fairness and justice, on humanity, like no other subject.
