She is a feminist geographer focusing on race, migration, and health. She is the co-author of Boats, Borders, and Bases: Race, the Cold War, and the Rise of Migration Detention the United States (2018, University of California Press), author of Health Rights Are Civil Rights: Peace and Justice Activism in Los Angeles, 1963-1978 (2014, University of Minnesota Press), and co-editor of Beyond Walls and Cages: Prisons, Borders, and Global Crisis (2012, University of Georgia Press).