The mechanism: The One Big Beautiful Bill Act (H.R. 1), signed July 4, 2025, directs roughly $45 billion through fiscal 2029 to expand ICE detention capacity — pushing the system toward 100,000-plus beds and lifting ICE's annual detention budget several times over its FY2024 baseline. That money doesn't build federal prisons; it flows into contracts with the two companies that already own or operate most of the private detention footprint, plus the surveillance and staffing vendors that ride along. The capacity math only pencils out through operators who can activate beds and monitoring slots fast, which is exactly the moat GEO Group and CoreCivic have spent two decades building.

Who cashes in: