charles goethe worked near arizona, focusing on health conditions in the 1920s. following his work in arizona, goethe desired to understand “the extent of the mestizo peril to the american ‘seed stock.'" essentially, goethe was determined to discover the threat of mexicans to the american population, in a eugenic sense. as a result, goethe created the immigration study commission. with the help of his organization, goethe hoped to ban mexican entry into the united states of america. in addition, goethe portrayed mexicans as carriers of different diseases and germs. while he believed that certain mexicans could appear as free of disease, they could in fact be silent carriers due to their health practices. his ideas contributed to 1920s perceptions that the american melting pot had begun to integrate germs from certain races, specifically the mexican race.