Between the 1870s and 1930s, American social reformers, working closely with the US government, transformed sexual vice into an international political and humanitarian concern. As these activists worked to eradicate prostitution and trafficking, they promoted sexual self-control for both men and women as a cornerstone of civilization and a basis of American exceptionalism. Empire of Purity: The History of Americans' Global War on Prostitution (Princeton University Press, 2024) by Dr. Eva Payne traces the history of these efforts, showing how the policing and penalization of sexuality was used to justify American interventions around the world.

Dr. Eva Payne describes how American reformers successfully pushed for international anti-trafficking agreements that mirrored US laws, calling for states to criminalize prostitution and restrict migration, and harming the very women they claimed to protect. She argues that Americans’ ambitions to reshape global sexual morality and law advanced an ideology of racial hierarchy that viewed women of color, immigrants, and sexual minorities as dangerous vectors of disease. Dr. Payne tells the stories of the sex workers themselves, revealing how these women’s experiences defy the dichotomies that have shaped American cultural and legal conceptions of prostitution and trafficking, such as choice and coercion, free and unfree labor, and white sexual innocence and the assumed depravity of nonwhites.

Drawing on archives in Europe, the United States, and Latin America, Empire of Purity ties the war on sexual vice to American imperial ambitions and a politicization of sexuality that continues to govern both domestic and international policy today.

This interview was conducted by Dr. Miranda Melcher whose new book focuses on post-conflict military integration, understanding treaty negotiation and implementation in civil war contexts, with qualitative analysis of the Angolan and Mozambican civil wars.

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