MADISON, Wis. (Civitas.global) — In a significant move concerning immigrant rights, the Wisconsin Supreme Court has agreed to hear a case led by the American Civil Liberties Union (ACLU) challenging the legality of local jails holding immigrant detainees at the request of federal authorities.

The lawsuit, brought forward by the ACLU on behalf of Voces de la Frontera, an immigrant rights group based in Milwaukee, argues that these practices are legally unjustifiable and infringe upon the rights of immigrant populations; they claim that holding individuals under ICE detainers amounts to an unlawful arrest.

Contextually, the case surfaces amid heightened immigration enforcement actions across multiple U.S. cities, creating a moment of tension within local communities and civil rights advocates who protest against such crackdowns.

The court, which is currently composed of a majority of liberal justices, voted 4-3 to expedite the hearing directly to the Supreme Court rather than going through lower courts, a decision that could result in a ruling by mid-2026.

The ACLU hopes that the court will ultimately rule that sheriffs cannot legally hold individuals based on ICE detainers, emphasizing the necessity of a judicial warrant for such actions. They argue that the existing Wisconsin law does not support civil arrests under immigration enforcement instances.

In contrast, attorneys representing the sheriffs maintain that their actions are compliant with both state and federal laws regarding immigration, expressing confidence that the trial will validate their adherence to legal frameworks.

As the case unfolds, implications for the relationship between local law enforcement and federal immigration policies remain a focal point of debate, underscoring the tension surrounding immigration law enforcement in America.