2024 marks the hundredth anniversary of the Johnson-Reed Act, or the Immigration Act of 1924. This legislation severely restricted the flow of "new" immigrants, particularly Catholics and Jews, from southern and eastern Europe; it targeted immigration from Latin America, though temporarily lifted restriction of Mexican migrants; and it excluded Asians entirely. The landmark act, passed during an era of rampant nativism, scientific-racist thinking, and reactionary conservatism, severely altered the demographic and legal landscapes of the United States, where echoes of the infamous act continue to resonate a century later. This panel revisits the Immigration Act of 1924--its precedents and origins, its logics, and its legacies--with four papers reflecting new and innovative research. Hidetaka Hirota explores the history of the concept of the "illegal alien," locating its roots in antebellum America around fears of "artificial" immigrants who required support of third parties to emigrate, which nativists used to create a distinction between "unnatural" and "natural" immigrants. Nina Gonzalez further explores the conspiratorial and gendered origins of anti-immigration animus, analyzing the rhetoric around women's bodies, health and fertility within racist anxieties about declining white birthrates and its crucial role in anti-immigration thought, and paying close attention to how white women were compared to Black and brown women, the latter of whom were coded as hyper-fertile, sexually deviant, and more tolerant to pain. Continuing to illuminate the inner world and internal logics of nativist sentiment, Austin Clements looks at the relationship between anti-communism and immigration restriction, revisiting the association between "godless communism" and race in the nativist imaginary. With the ideological and legal components of anti-immigration soundly elucidated by the preceding papers, Debbie Kang concludes the panel by looking at the lasting legacy of the immigration restrictions of the 1920s, specifically how the racist stereotypes surrounding Mexicans became encoded in law and used in further immigration legislation, such as the McCarran-Walter Act of 1952. Though a full century has passed since the Johnson-Reed Act was signed into law, attendees will recognize the language, logic, and legal precedents which continue to reverberate in contemporary social and political discussions, sentiments, and legislation.