U.S. Investigated Left-Leaning Groups During Minnesota’s Immigration Crackdown

Four days after Alex Pretti was fatally shot while filming officers taking part in the Trump administration’s immigration crackdown in Minnesota, the Homeland Security Department quietly opened an investigation at its office in St. Paul.

The target was not the Border Patrol agents who had killed Mr. Pretti, a 37-year-old government nurse, in late January. Instead, it was several left-leaning political organizations — labor unions, a climate change group, socialist collectives — that investigators believed had provided help and money to what they described as the “violent opportunists and agitators” on the street, according to newly released government documents.

As part of their inquiry, the documents show, homeland security officials used an array of invasive tactics during the first half of this year to gather information on many groups and individuals who were never accused of crimes, crossing the line that has traditionally stood between investigating criminal activity and political dissent.

In one instance, officials used administrative subpoenas to obtain more than three years of financial records from the Sunrise Movement, an environmental action group, and a labor union, the Communications Workers of America. {snip}

In another, investigators scrutinized three years’ worth of wire transfers made by the nation’s biggest health care workers union, the Service Employees International Union, in what they referred to as an inquiry into “domestic terrorist financing.”

The documents further detailed an expansive covert surveillance operation in which undercover agents spied on protesters and organizers at meetings held online, as well as in libraries, parks and churches, taking down not only what they said, but also their names and sometimes license plate numbers. The undercover agents also infiltrated group chats on Signal, listening as activists discussed coming demonstrations and their political opinions.

So far, none of the organizations targeted by the homeland security inquiry, conducted with the U.S. attorney’s office in Minnesota, have faced charges. And yet, as the investigation moved forward, prosecutors showed grand jurors a PowerPoint slide asserting that 18 groups — including the A.F.L.-C.I.O., the country’s largest federation of labor unions — were part of a conspiracy to impede the work of immigration officers in Minnesota.

Ultimately, that supposed conspiracy led in June to the indictment of 15 people accused of interfering with law enforcement agents as members of the far-left movement known as antifa.

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Some of the 15 people charged in the so-called antifa case did, in fact, belong to some of the unions and political organizations that faced scrutiny over several months during the spring and winter. But the newly released documents, which were disclosed as part of a motion asking for more details about the criminal inquiry, suggest that investigators used those tenuous connections to take a deep dive into the inner workings of the groups.

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When Daniel N. Rosen, the top federal prosecutor in Minnesota, announced the indictment of the 15 purported antifa members two months ago, he chose his words carefully, insisting that the defendants had been charged only because each of them had “violently opposed” federal agents taking part in the Trump administration’s immigration agenda.

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