Data Misuse and Legal Proceedings: Medicaid, ICE, and Palantir
In May 2026, ICE agents stationed outside an immigrant detention center in Newark, New Jersey were embroiled in controversy following improper data sharing. Medicaid officials shared personal data of millions with ICE, which in turn passed it to data analytics firm Palantir.
The incident came to light through recent court filings. Palantir’s app ELITE uses this data to track noncitizens potentially facing deportation. Over 20 Democratic attorneys general had previously initiated legal action against the Trump administration over this data-sharing arrangement.
Legal Developments
U.S. District Judge Vince Chhabria previously allowed ICE to access certain data from Medicaid records but restricted further sharing in May after officials admitted to overstepping boundaries. Notably, CMS shared a dataset that included information beyond the court’s limit, involving U.S. citizens and legal residents.
Despite orders to delete improperly shared data, ICE discovered copies of the dataset remained with multiple users after further checks. Alberto Briseno from ICE’s Homeland Security Investigations acknowledged technological challenges in ensuring complete deletion and affirmed continued efforts to rectify the situation.
Ongoing Concerns
The Department of Justice seeks expanded data access for ICE targeting wider categories of noncitizens, prompting opposition from the Democratic attorneys general. They argue ICE’s mismanagement weakens its claim for broader data access and undermines confidence in Medicaid data security.
Palantir has not yet addressed whether it removed the transferred data, nor has the Department of Homeland Security commented on data handling. A declaration from California’s deputy attorney general Anna Rich notes federal attempts to delete shared data via Microsoft Teams.
Judge Chhabria emphasized careful handling, stating improper sharing of citizens’ and legal immigrants’ data would end the government’s use of Medicaid data for deportation.