Think Immigration: Checking Citizenship on the Voter Rolls—Why Getting It Wrong Is Easier Than It Looks

A Nationwide Enforcement Push

In the weeks before the 2026 midterm elections, the U.S. Department of Justice (DOJ) and the Department of Homeland Security (DHS) have mounted a nationwide effort to find and prosecute noncitizens on the voter rolls. On October 19, 2026, the four California U.S. Attorney’s Offices announced a statewide sweep, “Operation Protect the Vote,” charging 28 lawful permanent residents (LPRs) with election-related crimes — including registering to vote while allegedly claiming to be U.S. citizens, and in some cases voting. Weeks earlier, DOJ charged 16 other people with illegal voting across seven states. The charges are accusations, and each defendant is presumed innocent. But the effort increasingly relies on a federal database to decide who is, and who is not, a citizen.

A Campaign Losing in Court

That campaign has fared poorly in court. The administration’s demand for states’ voter files — data that can include birth dates and partial Social Security numbers — has drawn lawsuits against roughly thirty states, district judges have dismissed them at least twenty-six times, and one court recently vacated the data-collection policy altogether, a ruling the government is now appealing. A Brennan Center review counted at least thirty-four federal rulings that halted or blocked the administration’s election actions, among them orders against an executive order that would have required documentary proof of citizenship to register. The Justice Department has also announced plans to deploy roughly 1,000 election monitors for the midterms, and the FBI has warned voters that voting by noncitizens is a federal crime.

SAVE: A Benefits Tool Repurposed for Citizenship Verification

At the center of the voter-roll effort is a database built for a different job. SAVE — the Systematic Alien Verification for Entitlements program run by U.S. Citizenship and Immigration Services (USCIS) — was created to help agencies confirm immigration status when people apply for public benefits, the purpose reflected in its name. It has only recently become the primary tool states are being urged to use when screening voter rolls: the federal government expanded it so that states could check entire rolls against federal records, and after a lower court set that expanded use aside, the U.S. Supreme Court in September 2026 allowed it to continue while the litigation proceeds. That reliance on a benefits-verification system to decide citizenship raises a basic question: how accurate is the tool?

How Often the Data Is Wrong

The record so far gives reason for caution, and the people most often caught by its mistakes are U.S. citizens. SAVE is a query tool, not a complete registry of citizens, and it lacks current information for many people — especially naturalized citizens and older Americans, because the Social Security Administration did not require evidence of citizenship from all applicants for a Social Security number until 1978. The Government Accountability Office has likewise found that USCIS lacked sufficient controls to ensure that agencies completed the additional verification that SAVE requires. When states have run the checks, the errors have surfaced quickly. In Texas, the Secretary of State screened roughly 18 million voters, flagged 2,724 as potential noncitizens, and then determined that 578 of them were in fact U.S. citizens — including 506 who were cleared only after passport records were added to SAVE. Utah narrowed tens of thousands of uncertain records to 8,836 “potential noncitizens,” then confirmed just one actual noncitizen, a person who had never voted; and more than seventy Missouri county clerks called the federal lists “deeply flawed … outdated, inaccurate, and include individuals we know to be U.S. citizens.”

None of this means the tool never finds a real problem. Of roughly 49.5 million registrations screened nationwide, officials flagged about 10,000 as potential noncitizens for review, yet investigations have confirmed far fewer — Utah, for instance, verified only one. The broader federal effort has been vast in scope but modest in confirmed results: Homeland Security Investigations (HSI) reviewed tens of millions of voter records and, by late May 2026, had opened roughly 418 voter-fraud cases and made 64 administrative arrests. The concern is not verification itself, but the action taken on flawed data. An estimated 21 million U.S. citizens lack ready access to a passport or birth certificate, so they could struggle to prove citizenship if a database wrongly flagged them; critics therefore warn that acting on initial data alone, without individual notice and a chance to respond, risks disenfranchising eligible voters.

The Quieter Trap: Automatic Registration

A second problem cuts the other way, and it explains how a noncitizen can land on the rolls without ever intending that outcome. Many states now use automatic voter registration (AVR), a process described by the National Council of State Legislatures (NCSL) as registering  eligible people who transact at the motor-vehicle agency (DMV) unless they decline. When a citizenship screen fails, or an applicant does not notice that a registration prompt applies, a noncitizen can be registered without knowingly doing anything. Illinois, for one, acknowledged a programming error that registered hundreds of people who had identified themselves as noncitizens at the counter. Since SAVE’s own description indicates that it does not determine applicant eligibility for a specific benefit or a license and DHS states that the benefit issuing or licensing agency makes that determination, this raises concerns as to why a motor vehicle licensing agency is tasked with determining citizenship at all. For a noncitizen, it works like a kind of stealth trap — hidden at the moment it is set, during an ordinary errand, and surfacing only years later at a green card or citizenship interview.

The Stakes for a Green Card Holder

For a lawful permanent resident, the consequences of such a registration — even an accidental one — fall into two tracks. The criminal penalty for voting itself is comparatively narrow: a noncitizen who votes in a federal election commits a federal misdemeanor under 18 U.S.C. §611, punishable by a fine and up to one year in prison. The heavier charge is a false claim of U.S. citizenship made in order to register or vote, a felony under 18 U.S.C. §1015(f) that carries up to five years. The civil exposure is often worse: unlawful voting is a ground of removal, and a false claim to citizenship is a ground of inadmissibility that generally cannot be waived. Removal is a civil immigration proceeding rather than a criminal case, so it lacks the protections that a criminal defendant would expect.

The intent requirement is thin. The voting offense is written as a flat prohibition and has been treated as a general-intent crime: the government need not prove that the person knew of their ineligibility or meant to break the law — only that the person knowingly cast a ballot. A green card holder may likewise be found removable for voting, regardless of whether the person knew the act was unlawful per 18 U.S.C. §611(a). The narrow exceptions are statutory, such as a reasonable belief in one’s own U.S. citizenship. A flag on the voter rolls is therefore rarely a simple story: it may reflect bad data, a misidentified citizen, or a noncitizen who never realized that a registration existed.

In 2021, USCIS shared updated policy guidance for naturalization applicants which stated, “USCIS will not penalize an applicant who unknowingly or unwilfully registers to vote" though an update to agency documentation from 2025 describes that someone could be penalized under the “good moral character” determination for knowingly unlawfully registering to vote.

The Bottom Line

A system that wrongly flags citizens, and a process that can enroll noncitizens without their knowledge, are both reasons to insist on careful, individualized verification and fair notice rather than sweeping action on imperfect data. For noncitizens, the safest course is simple: decline voter registration at the DMV, read every prompt before signing, refrain from registering or voting, and consult an immigration attorney before responding to any registration notice. For everyone else, the lesson is that accuracy and due process do not obstruct election integrity — they are what make it real.