Arizona AG Wins Binding Pause on Surprise, AZ Warehouse-to-ICE-Detention Conversion Pending Environmental Review

Arizona AG Kris Mayes announced July 1 a binding stipulated agreement with DHS and ICE pausing all conversion work on the Surprise, AZ warehouse — a 418,400 sq ft industrial facility ICE purchased for approximately $70M in January 2026 (2026-01-23–dhs-purchases-rockefeller-surprise-az-warehouse). ICE cannot detain anyone or take further physical conversion steps until a federal environmental assessment is completed; Mayes’s office projects a minimum nine-month delay. The site sits directly across from a chemical storage facility, and Mayes had filed the underlying NEPA lawsuit in April. This is the first instance of a state AG winning a binding pre-construction pause on the warehouse-to-detention conversion program nationally.

The pause lands atop a site with an already-documented capture history: the $313M GardaWorld operating contract (2026-03-06–ice-awards-gardaworld-313m-surprise-arizona-contract) and the Rockefeller Group’s 483%-markup sale to DHS, where City of Surprise’s local detention ban was nullified by federal preemption. The NEPA pause is a delay mechanism, not a cancellation — the underlying 1,500-bed build-out remains authorized pending the review’s outcome.

Update (2026-07-08): KJZZ and Arizona Capitol Times report the joint legal agreement formalizing the pause, confirming it requires DHS to complete a full NEPA review before construction proceeds. Of 11 warehouses DHS purchased nationally for $1.07 billion under this program, Surprise’s is now one of only a small number without confirmed active conversion plans — only the El Paso facility (Camp East Montana) has confirmed conversion plans proceeding as of this update.

Update (2026-06-17, prior to the NEPA pause): residents move to disincorporate the city. Frustrated by the Surprise City Council’s refusal to formally oppose the facility, activists filed a disincorporation petition with the Maricopa County Board of Supervisors, seeking to transfer municipal control to the county on the theory the county would be more willing to fight the conversion. Separately, ICE had scaled the project back from 1,500 to 542 beds, with an October earliest opening date and DHS agreeing to pay the city $300,000 annually in lieu of lost property taxes. The facility sits roughly 300 yards from residential homes and about a mile from a high school whose student population is over 60% Hispanic — the demographic proximity is a documented part of residents’ organizing case, independent of the chemical-storage-proximity legal theory Mayes’s NEPA suit relies on.