One of the most influential american eugenicists responsible for warning against the danger of racial intermingling was: charles davenport joseph arthur francis galton t. h. huxley

Charles Davenport explained racial intermingling has a mental, physical and character effect on an individual. It can result in dissatisfaction and incompatibilities caused by genetic hybridization as described by Davenport. He also cited that America has mixed races and are now dominant in the population which is mostly European.