They actually found the "One Drop" rule, aka any African ancestors at all meant you were legally black, too harsh and restrictive. But their whole plan to genocide the Slavs and expand East in to Russia, Ukraine, and beyond was explicitly modeled on the US genocidal campaign to conquer the US. "Generalplan Ost" is the keyword to look for.
They actually found the "One Drop" rule, aka any African ancestors at all meant you were legally black, too harsh and restrictive. But their whole plan to genocide the Slavs and expand East in to Russia, Ukraine, and beyond was explicitly modeled on the US genocidal campaign to conquer the US. "Generalplan Ost" is the keyword to look for.