The Department of Homeland Security (DHS) recently notified four states that it has identified approximately 250,000 potentially ineligible non-citizens on their voter registration rolls. Secretary of Homeland Security Markwayne Mullin sent letters to officials in California, Nevada, New Jersey, and Pennsylvania, requesting that the states respond to the findings by July 30.
The move follows a period of legal tension between the federal government and state election offices. The Department of Justice (DOJ) previously filed lawsuits against these and more than two dozen other states after they declined to provide voter rolls containing sensitive personal identifiers, such as partial Social Security numbers and driver's license data. While federal judges have dismissed several of those suits, the DHS letters suggest the agency was able to cross-reference voter data with its own records using matching personal information.
Election officials in the affected states, including Nevada Secretary of State Cisco Aguilar (D), have questioned the accuracy and origin of the DHS data. Aguilar noted that the public voter rolls typically do not include Social Security numbers, leading him to ask how the federal agency obtained the data for its analysis. The DHS has not publicly released its specific methodology or a list of individual names to the states for verification.
In his communications, Secretary Mullin stated that the agency found roughly 118,000 individuals across the four states whose names, birth dates, and Social Security numbers matched non-citizens in federal files. However, election experts, such as David Becker of the Center for Election Innovation & Research, have noted that previous data-matching efforts often result in "false positives." These frequently occur when individuals who were once non-citizens have since become naturalized U.S. citizens but have not had their status updated in every federal database.
For the average voter in these states, this development could result in changes to how voter rolls are maintained or audited in the weeks leading up to the election. Residents may notice increased public discourse regarding election security and could potentially see an increase in law enforcement presence or legal challenges during the vote-counting process. Some state officials expressed concern to NPR that these unverified figures might be used to justify warrants for federal law enforcement to access polling locations or ballot-processing centers, though no such actions have been officially announced.
The outcome of this dispute sets a precedent for how federal agencies and state governments share and verify sensitive voter data. It highlights a jurisdictional conflict between state control over elections and federal oversight of immigration and national security data. The next steps depend on whether the DHS provides the specific names and methodology to the states, and how the states respond to the July 30 deadline. Future court dates regarding the DOJ’s remaining lawsuits for voter data will also determine what information states are required to turn over to federal authorities moving forward.