The American Civil Liberties Union (ACLU) filed a lawsuit challenging the Laramie County Sheriff’s Office (LCSO) over its partnership with U.S. Immigration and Customs Enforcement (ICE) to perform immigration enforcement.
On May 26, the ACLU of Wyoming filed suit in the First Judicial District Court in Laramie County court against Laramie County Sheriff Brian Kozak over his agency’s immigration enforcement practices.
The lawsuit stems from an October 2025 action during which Kozak and 25 deputies were sworn in by ICE to enforce immigration law under the 287(g) provision of the Immigration and Nationality Act.
Since that time, LCSO has taken part in numerous commercial vehicle enforcement activities focusing on removing undocumented truck drivers from the road, some of which have been dubbed “Truck Around And Find Out.”
The ACLU alleges that that Kozak “overstepped his authority and violated Wyoming law by failing to get approval from Laramie County Commissioners when he signed the county’s 287(g) agreements with ICE.”
The lawsuit also accuses Kozak of failing to abide by the Wyoming Administrative Procedure Act’s rulemaking process, which would have allowed community members to comment on the 287(g) ICE partnership.
“When it comes to decisions that affect our communities, Wyomingites deserve a transparent, democratic process. Sheriff Kozak’s decision to unilaterally sign these 287(g) agreements without the approval of the elected County Commission is not only reckless, it is illegal,” said Libby Skarin, ACLU of Wyoming executive director. “At a time when reactionary anti-immigration officials assume that they can act with impunity to implement a chaotic and cruel agenda targeting immigrants across the United States and right here in Wyoming, it’s critical to send a message that nobody is above the law. Sheriff Kozak is no exception.”
“Sheriffs under Wyoming law have limited authority granted by statute. Any agreement that the sheriff wants to enter into has to be approved by the governing authority of the municipality. This did not happen in Laramie County,” said Andrew Malone, ACLU of Wyoming senior staff attorney. “The separation of powers and following the rule of law is not radical. Sheriff Kozak blatantly overstepped his authority by enrolling Laramie County in 287(g) agreements and robbed the community of their chance to weigh in on the matter.”
The Wyoming Highway Patrol and other Wyoming law enforcement agencies have also signed 287(g) partnership agreements with ICE, the ACLU said.
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