American eugenicists, repellant though they were, did not advocate mass euthanasia, and the period when the Nazis moved in their most radically murderous direction, at the very end of the 1930s, was also the period when their direct links with American eugenics frayed. In any case, eugenics, which was widely regarded as quite respectable at the time, was an international movement, whose reach extended beyond the borders of both the United States and Nazi Germany.

