Who define Mexico to " be the melting pot of all races ? "
The melting pot was equated with either the acculturation or the total assimilation of European immigrants , and the debate centered on the differences between these two ways of approaching immigration : " Was the idea to melt down the immigrants and then pour the resulting , formless liquid into the preexisting cultural and social molds modeled on Anglo-Protestants like Henry Ford and Woodrow Wilson , or was the idea instead that everyone , " Mayflower " descendants and Sicilians , Ashkenazi and Slovaks , would act chemically upon each other so that all would be changed , and a new compound would emerge ?