The United States has the most extensive immigration detention system in the world, expanding from a capacity of less than 5,000 detainees per day in the 1980s to 52,000 by 2019. While the most vociferous anti-immigrant rhetoric may be attributed to Republicans, US detention infrastructure has grown exponentially regardless of the political party in power as reports of abysmal detention conditions pile up. Nancy Hiemstra and Deirdre Conlon provide a damning expos of the ways immigration detention generates income. At the same time, those detained are starved, sickened, and exploited as a matter of routine detention operations. Drawing on over a decade of research focusing on detention centers in New Jersey and New York, the authors map public-private financial relationships and trace how detention contracts for food, medical care, and in-facility stores are fought over to the penny. By dissecting the inner workings of immigration detention, they show a system governed by a capitalist logic that produces sickening and corrupting dependencies in communities across the US. Coming at a pivotal social and political moment, Immigration Detention Inc. makes the case for dismantling immigration detention regimes everywhere.