In the 1930s, Nazi leaders closely studied America’s race laws, which they deeply admired, to help them create their own Nuremberg Laws in 1935. One of the laws stripped Jews of their citizenship; another prohibited sex or marriage between Jews and people with “German or related blood.” See James Q. Whitman’s eye-opening book, Hitler’s American Model: The United States and the Making of Nazi Race Laws (Princeton, NJ: Princeton University Press, 2017). In addition, some of South Africa’s and Australia’s forms of white-body supremacy were informed by American practices.