CA Attorney General Bonta Secures Preliminary Relief Blocking California’s Medicaid Data from Being Used for Immigration Enforcement Purposes

Published Date: Aug 12, 2025

California Attorney General Rob Bonta issued the following statement after the U.S. District Court for the Northern District of California granted a preliminary injunction finding California and a multistate coalition were likely to succeed on their claim that the U.S. Department of Health and Human Services’ (HHS) decision to provide unfettered access to individual personal health data to the U.S. Department of Homeland Security (DHS), which houses Immigration and Customs Enforcement (ICE), violated the Administrative Procedure Act’s prohibition on arbitrary and capricious rulemaking. The preliminary injunction blocks DHS from using Medicaid data obtained from plaintiff states for immigration enforcement purposes, and blocks HHS from sharing Medicaid data obtained from coalition states with DHS for immigration enforcement purposes. The preliminary injunction will remain in place either until 14 days after HHS and DHS complete a reasoned decisionmaking process that complies with the Administrative Procedure Act, or until litigation concludes.

“The Trump Administration’s move to use Medicaid data for immigration enforcement upended longstanding policy protections without notice or consideration for the consequences. It sowed a culture of fear that threatens our Medicaid system, caused chaos for states and providers, and created a chilling effect for patients seeking vital emergency medical care,” said Attorney General Bonta. “Today’s preliminary injunction rightfully blocks any sharing of California’s Medicaid data for immigration enforcement for now — and ensures any of the data that’s already been shared is not being used for immigration enforcement purposes. As the President continues to overstep his authority in his inhumane anti-immigrant crusade, this is a clear reminder that he remains bound by the law.”

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