Yes, but no.

Nazis thought Germans would be shocked by the “One-Drop rule” as too extreme, so they dropped it in favor of multiple ancestors.

“The American example… provides the most important model. … There is no other country that has done more to legally segregate its population.”

Hitler also spoke of The Jim Crow south as providing the racial model Germany must follow, in Mein Kampf.

“Hitler’s American Model: The United States and the Making of Nazi Race Law” by historian James Q. Whitman

The South was far more evil, which is why Hitler felt he had to enact the Final Solution in secret.