The Department of Homeland Security violated federal surveillance rules by keeping Chicago police gang records on nearly 800 residents for seven months past their deletion deadline. The breach exposed how federal agencies can circumvent local sanctuary protections while testing ways to feed local intelligence into national watchlists, raising concerns about domestic surveillance overreach.
Federal intelligence officers at the Department of Homeland Security quietly deleted a cache of Chicago police records on November 21, 2023 - but it wasn't routine housekeeping. For seven months, the data had sat on government servers in direct violation of federal rules designed to prevent domestic spying on Americans.
The violation centered on records from roughly 900 Chicago residents that DHS's Office of Intelligence & Analysis had requested in 2021 as part of an experiment. The goal was ambitious: test whether local gang intelligence could help federal agents spot undocumented immigrants at airports and border crossings. Instead, the project collapsed into what internal reports describe as a "cascade of procedural lapses."
Internal memos obtained by the Brennan Center for Justice reveal the scope of the compliance failure. DHS analysts had requested bulk access to Chicago's gang database - a system city inspectors had already flagged as riddled with errors and bias. Police records included people supposedly born before 1901, others listed as infants, and occupations recorded as "SCUM BAG," "TURD," or simply "BLACK."
The experiment began in June 2021 when the FBI expanded its Transnational Organized Crime Actor Detection Program to include the Latin Kings, a Chicago street gang. Spurred by this decision, a DHS field officer contacted Chicago PD officials requesting a "bulk extract" of gang records to "fully exploit the list," according to the documents.
But the project immediately hit bureaucratic turbulence. The field officer who initiated the transfer left their post in January 2022, creating what officials later called a "serious staffing gap." Their replacement wouldn't arrive for eight months, leaving the project orphaned as it moved through review layers.
By April 2022, when DHS's Data Access Review Council finally approved the transfer, basic safeguards had already broken down. The agreement required deletion of all US-person data within a year and regular compliance reports. Neither happened. Even the signature process went sideways - instead of the required undersecretary approval, the office's chief information officer signed off for reasons investigators later said "are unclear."
The Chicago data itself was a surveillance nightmare. City auditors had documented at least 18 different systems where gang information lived, with police unable to "definitively account for all such information." More than 500 outside agencies had queried these systems over a million times in a decade. Ninety-five percent of those flagged were Black or Latino, with no process for appeals and no routine purges for people who'd left gangs or gone years without police contact.
"This intelligence office is a workaround to so-called sanctuary protections," Spencer Reynolds, senior counsel at the Brennan Center, tells WIRED. "Federal intelligence officers can access the data, package it up, and then hand it off to immigration enforcement, evading important policies to protect residents."
The violation came to light only when oversight staff noticed in 2023 that DHS had missed its April deletion deadline. A preliminary inquiry found the agency retained at least 797 "documents" in violation of rules prohibiting domestic intelligence collection. The timing proved ironic - DHS finally purged the data in November 2023, just two weeks after Chicago officially scrapped its gang database entirely.
The episode reflects broader surveillance ambitions within DHS, whose budget will soon exceed $191 billion. A March 2025 executive order encouraged federal departments to "eliminate information silos," while DHS's AI initiatives promise to merge public and commercial data for enforcement. These tools feed into the FBI's Terrorist Screening Dataset and companion watchlists that screen travelers at borders and airports.
Congressional auditors reached a harsh conclusion this summer about DHS oversight. The Government Accountability Office reported that the Intelligence & Analysis office still lacks basic controls to track how intelligence gets collected and used. The office only produced its first consolidated intelligence budget in 2025 - twelve years after that became legally required.
The problems extend beyond paperwork. WIRED reported in September that a misconfiguration in DHS's intelligence portal left hundreds of sensitive reports exposed to thousands of unauthorized users. Multiple analysts told congressional auditors that intelligence reports continue circulating without proper review and sometimes contain factual errors.
"Robust oversight has long taken a back seat at the department," Reynolds adds, pointing to recent cuts in DHS's civil rights office. "Would an oversight inquiry like this even happen now? Probably not."
While Chicago's gang database is gone, the surveillance infrastructure remains. Illinois state police maintain their own gang file through the Law Enforcement Agencies Data System, and DHS's Enforcement and Removal Operations signed a new data-sharing agreement with state authorities last year.
DHS declined to detail corrective measures, with a spokesperson saying only that the agency "abides by strict standards for data keeping" and handles "all records in accordance with existing law." But the Chicago episode illustrates how federal intelligence gathering can bypass local sanctuary protections through back-channel data sharing - turning city police files into federal surveillance tools with minimal oversight.
The Chicago gang database incident reveals how federal surveillance can expand through bureaucratic lapses and interagency data sharing. As DHS pursues AI-powered data fusion and Congress pushes to eliminate information silos, the episode serves as a warning about oversight gaps that can turn local police records into federal intelligence tools. With limited accountability mechanisms and growing surveillance budgets, similar violations may be happening across other jurisdictions without public notice.
