Federal judge blocks subpoena effort against Minnesota Gov. Tim Walz and other officials

A federal judge on Monday blocked the Trump administration’s subpoena effort against Minnesota Gov. Tim Walz and other state and local officials, saying the government had not shown a legitimate criminal purpose for the records demand.

U.S. District Judge Patrick Schlitz found that the subpoenas were instead aimed at pressuring Minnesota officials to help enforce federal civil immigration law and retaliating against them for refusing to cooperate. The ruling stops an effort that began in January as part of a federal investigation into whether officials obstructed immigration enforcement in the Minneapolis-St. Paul area.

Walz called the decision a victory for the rule of law and democracy. Other Minnesota officials, including Attorney General Keith Ellison and the mayors of Minneapolis and St. Paul, had previously condemned the subpoenas as politically motivated.

What the judge said

The court’s core finding was that the subpoena effort lacked a real criminal investigative purpose. Instead, the judge said the government was trying to obtain materials tied largely or entirely to constitutionally protected conduct.

That distinction matters because grand jury subpoenas are meant to support genuine criminal investigations. In this case, the judge concluded the stated justification did not fit the scope or purpose of the demand.

The ruling also sharpened the constitutional question at the center of the dispute: whether federal law-enforcement tools were being used to pressure state and local officials over their immigration positions. The court answered that question against the government, describing the dominant purpose as coercion and retaliation.

How the dispute began

The subpoenas were issued in January 2026 in connection with a federal investigation into whether Minnesota officials obstructed immigration enforcement. The effort targeted Walz and other officials in Minnesota, placing the state at the center of a widening conflict with the Trump administration over immigration operations.

AP reported at the time that the subpoena effort drew immediate backlash from Minnesota leaders, who argued the move was political. That view was echoed again after Monday’s ruling, which gave the officials a legal victory after months of criticism.

The broader fight grew out of the administration’s immigration push in Minnesota, where federal officials were pressing state and local leaders to cooperate more fully with enforcement efforts. The court’s ruling does not end that broader policy conflict, but it does constrain one of the Justice Department’s tools in the case.

Why the ruling matters

The decision limits the Justice Department’s ability to use grand jury subpoenas against elected officials in disputes tied to immigration enforcement. It also reinforces the ability of state and local governments to resist federal pressure to participate in those operations.

The ruling adds to scrutiny over whether federal law-enforcement powers are being used for political retaliation rather than criminal investigation. That is especially significant in a case involving an elected governor and other public officials who were already in open opposition to the administration’s immigration agenda.

For Minnesota officials, the order is both a legal and political win. It backs up their argument that the subpoenas were not a neutral investigative step but part of a broader effort to force cooperation.

What happens next

The Justice Department could seek further review or appeal the ruling. It could also try to narrow its approach or continue the broader investigation in another form.

Minnesota officials are likely to keep using the decision to resist related federal demands. The dispute may also continue to shape the larger political confrontation between Minnesota and the Trump administration over immigration enforcement.

The underlying investigation has now run into a serious judicial roadblock, but it remains one piece of a wider legal and political battle that is still unfolding.