A whistle-blower has raised concerns that a U.S. Department of Homeland Security (DHS) operation aimed at identifying noncitizens on voter rolls may have violated state laws and relied on flawed data, potentially resulting in the improper targeting of eligible voters. The account, detailed in a nearly 30-page report released Monday and shared with Senators Chuck Schumer and Alex Padilla, offers an inside look at the agency’s “Unlawful Voter Initiative,” a nationwide effort involving hundreds of federal agents.

The initiative, which was first revealed publicly last month, tasks agents with reviewing voter records to detect cases of alleged noncitizen voting—an issue President Donald Trump has frequently highlighted despite longstanding evidence that such instances are exceedingly rare. According to the whistle-blower, agents were required to examine at least 40 voters daily, which allowed about 12 minutes per case, raising doubts about the rigor and accuracy of the reviews.

The whistle-blower’s report criticizes the reliance on what it describes as questionable "source data" drawn from multiple databases, including public voter files, Department of Justice records, and Immigration and Customs Enforcement (ICE) information. The data reportedly includes so-called alien identification numbers, which remain associated with individuals even if they subsequently become naturalized citizens, risking the misclassification of lawful voters as ineligible. Agents were instructed to flag individuals who may have voted before naturalization, but concerns about data accuracy led some agents to question the legitimacy of such findings.

In addition to data concerns, the operation’s methodology has been challenged for potentially violating state regulations. Investigators reportedly used personally identifiable information, such as birth dates and partial Social Security numbers, to access state voter databases, sometimes in states where usage is restricted to individual voters themselves. The whistle-blower flagged this as potentially illegal “posing” as voters, and reported raising such legal concerns to DHS leadership.

A DHS spokesperson defended the program, stating that the department used publicly available data and cross-referenced it with records of noncitizens, emphasizing the agency’s commitment to securing elections. The office of the chief counsel at DHS also maintained that agents were authorized to access state databases as part of their official duties but acknowledged some internal recognition of possible legal risks.

Democratic leaders have criticized the initiative as a politically motivated attempt to undermine confidence in the voting process ahead of the November midterm elections. Senator Schumer described it as an unprecedented effort by the Trump administration to interfere with elections, while Senator Padilla highlighted worries about both privacy and the high likelihood of false positives.

The senators have formally requested that DHS halt the operation and provide detailed responses to a series of questions regarding the program’s legality, data sources, and procedural safeguards. The whistle-blower, whose identity remains confidential due to fears of retaliation, is associated with the Democracy Defenders Fund, a nonprofit watchdog group established in 2023 that produced the report.

The report underscores internal unease over the potential for the creation of inaccurate records that could have severe consequences for individuals’ immigration status and voting rights, raising broader questions about the balance between election security and the protection of lawful voters.