This article examines Australian responses to the imposition of stringent national origins quotas in the United States during the 1920s.  Following the introduction of the American quota system, many Australians worried that large numbers of undesirable southern and eastern European migrants would make their way toward Australian ports. Widespread calls for preemptive restrictions forced the Australian government to finally implement a range of measures designed to limit immigration from Italy, Greece, Albania, Yugoslavia, and Malta. More broadly, this article argues that American quotas often inadvertently engendered a wide range of indirect and unintentional consequences around the world that scholars of migration and American
foreign relations might explore in greater depth. It concludes by suggesting some opportunities for individual and collaborative research into the international effects of the United States’ notorious national origins quota system.