MINNEAPOLIS (AP) — A federal judge on Monday blocked an attempt by the Trump administration to subpoena Minnesota Gov. Tim Walz and other state officials, calling it an effort to "harass and retaliate against them."

U.S. District Judge Patrick Schlitz found that the "dominant purpose" of the subpoenas was to "coerce Minnesota officials into assisting the federal government with enforcing civil immigration law and to harass and retaliate against them for failing to do so."

The subpoenas were served in January as part of an investigation into whether Walz and other officials obstructed or impeded law enforcement during a sweeping immigration operation in the Minneapolis-St. Paul area.

The subpoenas, which seek records, were sent to the offices of Walz, Attorney General Keith Ellison, Minneapolis Mayor Jacob Frey, St. Paul Mayor Kaohly Her and officials in Ramsey and Hennepin counties.

The judge ruled that there appeared to be "extremely weak to nonexistent" connections between the information sought in the subpoenas and any possible criminal violation. The subpoenas seek materials "that largely if not entirely relate to constitutionally protected conduct," the judge wrote, noting that Minnesota has the legal right not to devote its resources to enforcing federal immigration law.

Walz, in a statement, called the ruling "a victory for the rule of law and our democracy."

"The U.S. Justice Department is pursuing criminal investigations into the President's political opponents," said Walz, the 2024 Democratic nominee for vice president. "This case was just one example of that, but we are seeing daily reminders of this administration's lawlessness – in Minnesota and around the country. We all must continue to seek justice and uphold the rule of law."

Ellison said "it should disturb every American that Donald Trump is weaponizing the criminal justice system against people he disagrees with."