Nativism: As mentioned earlier, nativism is favoring native-born citizens over immigrants. Groups like the Immigration Restriction League were driven by nativist sentiments.
Quota System: This refers to policies that set a limit on how many individuals from certain countries can immigrate to another country. The league supported such systems to restrict immigration.
Dillingham Commission Report (1911): This report provided statistical evidence supporting immigration restriction. It claimed that new immigrants were inferior, leading to further anti-immigrant sentiment and legislation.