 Furthermore, non-Japanese also took a dim view of the schools, accusing them of indoctrinating Japanese American children and forming part of a wider strategy of the Japanese government to "colonize" the United States; public school teachers and the Office of Naval Intelligence went so far as to label them "anti-American".Anti-Japanese prejudice had grown with their population, and nativist groups spent much of the late 19th and early 20th centuries lobbying to limit Japanese immigration, create race-based restrictions on citizenship, enact discriminatory property laws, and otherwise combat the "Yellow Peril"; by the 1920s, the focus had shifted to Japanese language schools.A 1920 report by the Federal Commission of Education declared that the 20,000 students of Hawaii's 163 Japanese schools were being "retarded in accepting American customs, manners, ideals, principles, and standards," and recommended the schools be taken over by the public education system.