We now know that in the background of this horror lay a sustained engagement with America’s eugenics movement. In his 1994 book The Nazi Connection: Eugenics, American Racism, and German National Socialism, historian Stefan Kühl created a sensation by demonstrating that there was an active back-and-forth traffic between American and Nazi eugenicists until the late 1930s, indeed that Nazis even looked to the United States as a “model.
