Laramie County Jail — Wyoming's largest 287(g) operation, 25 deputies sworn in, 257 ICE detainees (Sep-Jan), $120/day
Update (May 2026): Laramie County topped the entire nation in immigration arrests for the week of April 17-23, 2026 — 53 arrests, ahead of the Florida Highway Patrol (31) and Oklahoma DPS (27). 46 coincided with Sheriff Kozak’s publicized “Truck Around Find Out / Operation Spring Break” traffic op (announced in an April 25 Facebook post); ICE processed 40 at a federal facility and 6 were booked at the Laramie County Detention Center. The office has now made 300 total immigration arrests since October 2025 and reports 27 certified officers. On May 27, 2026, the ACLU of Wyoming sued Sheriff Brian Kozak (plaintiffs: Juntos, the Unitarian Universalist Church of Cheyenne, Drew’s Barbershop) alleging the three 287(g) agreements are void because he bypassed the county commission/clerk and the Wyoming Administrative Procedures Act. See county-fight
laramie-county-wy-aclu-287g-lawsuit.
Overview
The Laramie County Jail in Cheyenne is the most active ICE detention and enforcement site in Wyoming. On October 1, 2025, Sheriff Brian Kozak and 25 deputies were sworn in by ICE ERO Denver Field Office Director Robert Guadian and authorized to enforce immigration law under Section 287(g). The facility has been approved by ICE to hold immigration detainees awaiting deportation, with space for approximately 100 people.
Key Details
- 287(g) agreement: Signed 2025; 25 deputies trained and sworn in Oct 1, 2025
- Daily rate: $120 per detainee
- Detainees housed: 257 ICE detainees from Sept 1, 2025 to Jan 31, 2026 (593 total detainee-days)
- Revenue: Sheriff submitted invoices to ICE for nearly $75,000 for 287(g) services
- Enforcement model: Deputies check immigration status during arrests, serve ICE warrants on jail population, conduct joint operations with ICE and WHP
November 2025 Trucker Operation
The most significant enforcement action in Wyoming to date was a 3-day joint operation (week of Nov 24, 2025) by Laramie County Sheriff’s Office, ICE, and Wyoming Highway Patrol targeting commercial truckers bypassing the Colorado border port of entry on county roads:
- 40 individuals facing deportation
- 195 traffic stops conducted
- 133 commercial vehicle inspections
- 44 trucks and 38 drivers placed out of service
- 50+ arrests across all three agencies
- 62% violation rate among inspections
- Detainees transported to Aurora, CO rather than held locally
The operation was prompted by complaints from lawfully-operating truckers about undocumented competitors bypassing inspection points during pre-dawn hours.
ACLU Concerns
The ACLU of Wyoming noted that while the program was sold as targeting “the worst of the worst,” the sheriff’s department and enforcement partners appeared to be “casting a much wider net.” Data from ICE showed most people arrested in Wyoming in 2025 did not have criminal convictions; the most common conviction among those who did was DUI.
Sources
- Laramie County Sheriff: ICE news release (Oct 1, 2025)
- WY News: Not a sanctuary state — ICE inducts 25 LCSO deputies (Oct 2025)
- Oil City News: Laramie County deputies making more immigration arrests (Nov 26, 2025)
- Cowboy State Daily: ICE to deport 40 truckers (Nov 24, 2025)
- WyoFile: Most ICE arrests in WY/CO no criminal history (Jul 2025)
- WyoFile: Laramie County Sheriff’s Office topped nation in immigration arrests during April operation (May 13, 2026)
- Cowboy State Daily: Church, barbershop and ACLU suing Laramie County Sheriff over ICE agreements (May 27, 2026)
- WyoFile: Here’s how Wyoming communities cooperate with ICE (May 2026)