To promote naturalization among un-naturalized residents of the State of California; to urge the broadening of the program now established in schools for the education of un-naturalized residents so that they can pass the required tests for naturalization, including the teaching to un-naturalized persons of the history and background of the United States of America, and through the Posts and Districts to cooperate with the officials of the Naturalization Department of the United States and the courts when classes of persons are naturalized.