In a revelation that’s sending ripples through Washington and immigrant communities alike, the Internal Revenue Service (IRS) has admitted to improperly disclosing the confidential tax data of thousands of individuals to the Department of Homeland Security (DHS) as part of a Trump administration initiative to ramp up immigration enforcement. The disclosure, first reported by The Washington Post on February 11, 2026, and confirmed in subsequent court filings, appears to have breached long-standing federal laws designed to shield taxpayer information from unauthorized eyes.
The controversy centers on a data-sharing agreement signed in April 2025 between the Treasury Department and DHS. The memorandum of understanding allowed U.S. Immigration and Customs Enforcement (ICE) officials to submit lists of names and addresses of people they suspected were living in the United States without legal status. The IRS would then cross-check these names against its vast trove of tax records, providing verification and, in some cases, additional personal information.
For years, immigrants—regardless of legal status—have been encouraged to pay taxes, with the federal government assuring them that their data would remain confidential. The agreement, however, upended this assurance, leading to immediate backlash from immigrant rights groups and privacy advocates. As Newsweek reported, the IRS received requests for 1.28 million names from ICE and was able to verify about 47,000 individuals. For roughly 5 percent of these, the IRS provided additional address information, potentially violating strict federal privacy protections.
IRS Chief Risk and Control Officer Dottie Romo, in a declaration filed with the court, acknowledged the mistake. She explained that the IRS shared confidential taxpayer information even when DHS lacked sufficient data to positively identify specific individuals. Romo stated that the Treasury Department notified DHS of the error in January 2026 and requested swift action to remediate the situation, including the "appropriate disposal of any data provided to ICE by IRS based on incomplete or insufficient address information."
Federal law generally imposes stringent confidentiality requirements on tax information, with unauthorized disclosures potentially triggering civil and criminal penalties. The IRS has yet to clarify whether it will notify individuals whose data was shared. According to Fox News, the ICE data file included sensitive fields such as names, Social Security numbers, dates of removal orders, and addresses—raising the stakes for those whose information was exposed.
The fallout has been immediate and dramatic. Acting IRS Commissioner Melanie Krause, appointed by President Trump in early 2025, resigned in protest over the agreement. She was joined by other top IRS officials, including chief privacy officers Kathleen Walters and Teresa Hunter, who also stepped down, citing concerns that the memorandum likely violated taxpayer privacy law. The National Immigration Forum, among other advocacy organizations, described the agreement as "a drastic shift away from the IRS’s longstanding commitment to taxpayer privacy." They noted that IRS privacy laws only permit information-sharing with law enforcement in very narrow circumstances, typically related to specific criminal investigations.
Litigation quickly followed. A coalition of immigrant rights groups filed suit against Treasury Secretary Scott Bessent and Homeland Security Secretary Kristi Noem, arguing that the agreement was not only unprecedented but also illegal. As Fox News detailed, federal judges have since issued rulings blocking the IRS from sharing residential addresses with ICE and, in one case, halting the agreement entirely. One judge found that the IRS had "illegally disseminated the tax data of some migrants over the summer, violating a taxpayer confidentiality law."
For many advocates, the breach is more than a bureaucratic blunder—it’s a fundamental threat to trust in the tax system. Tom Bowman, policy counsel for the Center for Democracy & Technology, expressed deep concern in a statement shared with Newsweek: "The improper sharing of taxpayer data is unsafe, unlawful, and subject to serious criminal penalties. Once taxpayer data is opened to immigration enforcement, mistakes are inevitable and the consequences fall on innocent people." He continued, "The disclosure of thousands of confidential records unfortunately shows precisely why strict legal firewalls exist and have—until now—been treated as an important guardrail. Our tax system depends on trust, particularly in the government, and failure to safeguard sensitive information eviscerates that trust."
Lisa Gilbert, co-president of Public Citizen, echoed these sentiments, telling The Associated Press, "This breach of confidential information was part of the reason we filed our lawsuit in the first place. Sharing this private taxpayer data creates chaos and, as we’ve seen this past year, if federal agents use this private information to track down individuals, it can endanger lives."
Not everyone sees the data-sharing agreement as an unmitigated disaster. A DHS spokesperson, speaking to The Hill, defended the initiative, arguing that "information sharing across agencies is essential to identify who is in our country, including violent criminals, determine what public safety and terror threats may exist so we can neutralize them, scrub these individuals from voter rolls, and identify what public benefits these aliens are using at taxpayer expense." The spokesperson insisted that DHS is "finally doing what it should have all along" by coordinating with other federal agencies to solve pressing national problems.
Still, the disclosure has prompted a reckoning within the federal government. The IRS, ICE, and DHS are now working together to address the fallout, with the Treasury Department emphasizing the need for "remediation consistent with federal law." As part of ongoing litigation, DHS and ICE have agreed, at least temporarily, not to "inspect, view, use, copy, distribute, rely on, or otherwise act on any return information" disclosed under the agreement.
The breach has also reignited debate over the balance between public safety and privacy. While some officials argue that robust data sharing is vital for national security and law enforcement, others warn that undermining taxpayer confidentiality could have far-reaching consequences. Immigrant communities, in particular, may become less likely to file taxes or cooperate with authorities, fearing that their information could be used against them.
In Minnesota, ICE Acting Director Todd Lyons recently told lawmakers he is "100%" committed to transparency, promising to release body camera footage from ICE operations to the public. Whether such gestures will be enough to restore trust remains to be seen.
As federal agencies scramble to contain the damage and courts weigh the legality of the IRS-DHS agreement, one thing is clear: the improper disclosure of sensitive taxpayer data has upended long-standing norms and thrown a harsh spotlight on the risks of interagency cooperation gone awry. For the thousands of individuals whose information was exposed—and for the broader public—the episode serves as a sobering reminder of the delicate balance between security and privacy in modern America.