Security1 publisher2 min readPublished
Supreme Court clears states to check voter citizenship against DHS's SAVE database
Supreme Court lets states screen voters against DHS's SAVE database, over three dissents and lower-court findings that its data is inaccurate. Each state decides whether to use it, so eligible voters' exposure depends on which states opt in before the midterms.
The Watch · Security desk
What happened
- The Supreme Court ruled Friday that states may use DHS's SAVE database to check voter citizenship, reversing lower courts that found the database inaccurate.
- DHS built SAVE to decide immigrants' benefit eligibility and track citizenship applicants, and the Trump administration repurposed it to screen voters.
- No system of records notice or public comment period preceded DHS's May 2025 announcement that the database was ready for use.
- The League of Women Voters and EPIC sued last year, arguing the merge with Social Security records violated the Social Security Act, the Privacy Act and the APA.
Compiled by The WatchSomething wrong?How this is made
Why it matters
- exposure Eligible voters in states that opt in now face citizenship checks that can remove them from the rolls on a wrong match.
- decision Each state's election office now decides whether to run SAVE checks before the midterms. Most states have resisted federal citizenship verification, so voters' exposure will differ from state to state.
- precedent Because of the stay, a records system deployed without its required privacy notice will run through an election while its legality is still argued. Later efforts to repurpose federal data can cite that result.
The order is a stay, and the majority granted it on the equities [3]. It wrote that "the Federal Government has an obligation to respond to requests from state and local election officials seeking to verify the citizenship of voters" [2]. The ruling reads: "The District Court's order thus inhibits the Federal Government's efforts to assist state and local agencies in the proper administration of the midterm elections." It goes on: "Under these circumstances, the equities weigh in favor of a stay." [3]
The voter check runs on DHS immigration data merged with Social Security records [12]. Critics say SAVE is outdated and often inaccurate, and that it poses a significant risk of wrongly removing eligible voters from the rolls [5]. CyberScoop's report does not include an error rate, or a count of voters wrongly flagged in states that have already used the system. Until one of those numbers is public, the size of the risk this cycle depends on how many states adopt SAVE. Adoption remains uncertain [7].
The Court has not settled the legal basis for the merge. The administration cited the Illegal Immigration Reform and Immigrant Responsibility Act. Lower courts rejected that argument [12]. "The majority thus treats [the Illegal Immigration Reform and Immigrant Responsibility Act] as essentially overriding the limits that privacy laws impose on the sharing of citizenship information with DHS. But that 'back-of-the-napkin assessment,' is implausible," Justice Jackson wrote [13]. Justices Jackson, Sotomayor and Kagan dissented. They objected that the Court granted the stay "without full briefing or oral argument," leaving interim rulings on "two statutory provisions it has never before interpreted" [10].
Voter screening is one part of a longer fight over state election data. The administration has lost 23 federal court cases trying to compel states to share additional data [9]. Some conservative states have used SAVE before and say it has helped them maintain their voter rolls [7]. The ruling lets states use the database. It does not require any of them to [1][7].
What to watch
- Which states, beyond the conservative states that already use SAVE, announce voter-roll checks against it before the midterms.
- A published error rate or count of wrongly flagged voters from any state running SAVE checks.
- Whether DHS files a system of records notice for the voter-screening use, or the Privacy Act and Social Security Act claims move to a merits ruling.