Judge limits Trump DHS voter investigations in nine states

A federal judge in California has temporarily restricted the Trump administration’s election-related field investigations in nine states, finding that error-prone government lists could pull U.S. citizens into enforcement activity and interfere with lawful voter-assistance work.

U.S. District Judge Araceli Martínez-Olguín granted a preliminary injunction on Wednesday, October 21, in California Nurses Association v. Mullin. The order applies in California, Connecticut, Georgia, Missouri, Nevada, New York, Pennsylvania, Washington and Wisconsin. It is stayed until 5 p.m. Pacific time on Friday, October 23, giving the administration time to appeal, and is scheduled to expire when polls close on November 3.

What the order blocks

The injunction bars Department of Homeland Security personnel from conducting election-related field operations or interviews in the nine states when agents know, suspect or reasonably should suspect that the people involved are U.S. citizens. It also blocks field operations against such people when the action is based entirely on records generated through the voter-eligibility matching system described in the ruling.

The ruling does not end every federal investigation of suspected noncitizen voting. It is limited to the specified states, practices and period before the midterm election. The plaintiffs must also post a $100 bond by Thursday evening for the injunction to remain in place.

The case concerns an initiative launched by DHS in 2026. According to the court record, the department assembled target lists from government, public and commercial sources, then directed U.S. Citizenship and Immigration Services personnel to review suspected cases before Homeland Security Investigations agents pursued field interviews.

Why the judge intervened

Martínez-Olguín wrote that the initial data were voluminous and unreliable. The government acknowledged in court filings that similar names, incomplete records, outdated citizenship information and clerical errors could produce mistakes. The judge also noted that reviewers were directed during the surge to complete at least 40 subject reviews per day, allowing no more than 12 minutes for each review.

The plaintiffs — two nurses’ organizations, San Francisco, Santa Clara County and the Voto Latino Foundation — argued that armed visits and publicized arrests were intimidating eligible voters and people who help them register or cast ballots. At this preliminary stage, the judge found the nurses’ organizations likely to succeed on their claim that the practices violated the Voting Rights Act’s ban on intimidation affecting voter assistance and mobilization.

A preliminary injunction is not a final decision on the lawsuit. The judge did not resolve all seven claims, including several constitutional and Administrative Procedure Act theories. Instead, she concluded that the plaintiffs had shown likely success on the voter-assistance claim, irreparable harm and a balance of interests favoring temporary relief.

Administration position and next steps

The administration argued in the case that DHS was pursuing authorized election-crime investigations and seeking to screen citizens out of the process. It also disputed the plaintiffs’ standing and characterized their legal theory as too broad. The court said that stated intent did not eliminate the risk that citizens could be swept into operations based on inaccurate information.

The Associated Press reported that DHS did not immediately respond to a request for comment after the ruling. The department can seek appellate review before the stay lifts Friday. Unless the order is changed or paused, the covered field operations will be restricted through Election Day.

The decision is a material new step in the broader dispute over the administration’s voter-roll and noncitizen-voting efforts. It is separate from a lawsuit filed this week in Washington by Democratic leaders, which challenges federal pressure on states and election officials. This California case directly produced a temporary court order governing specified DHS field activity.

Sources and image credit

Primary record: the October 21 preliminary-injunction order in California Nurses Association v. Mullin; case background and filings via Democracy Docket.

Independent reporting: Associated Press via ABC News and The Washington Post.

Image: Department of Homeland Security headquarters opening ceremony at the St. Elizabeths campus in Washington on April 10, 2019, photographed by Tara Molle/DHS, via Wikimedia Commons; public domain as a U.S. government work. Cropped to 1600×900 with no text added.