How America contributed to Nazism under Hitler

From Isabel Wilkerson's book, Caste, The Origins of Our Discontents

The man chairing the meeting, Franz Gürtner, the Reich minister of justice, introduced a memorandum in the opening minutes, detailing the ministry’s investigation into how the United States managed its marginalized groups and guarded its ruling white citizenry. The seventeen legal scholars and functionaries went back and forth over American purity laws governing intermarriage and immigration. In debating “how to institutionalize racism in the Third Reich,” wrote the Yale legal historian James Q. Whitman, “they began by asking how the Americans did it.” 

.... “Germany became a full-fledged racist regime,” the historian George M. Fredrickson wrote. “American laws were the main foreign precedents for such legislation.”