H.R. 5283 would revoke a one-year lease between the National Park Service (NPS) and the city of New York for portions of Floyd Bennett Field in Brooklyn, which is used for temporary housing for up to 2,000 aliens (non-U.S. nationals). The lease commenced on September 15, 2023, with an annual rent of $20.8 million plus an additional $7 million for management and oversight expenses. The lease contains a clause allowing either party to terminate it after the initial 90-day period. For this estimate, CBO assumes H.R. 5283 will be enacted near the beginning of calendar year 2024. Therefore, upon enactment, CBO expects the agreement could be terminated at no cost to the federal government. CBO estimates that any administrative costs to terminate the lease would be insignificant; that spending would be subject to the availability of appropriated funds.