Marin County has barred federal immigration agencies from using county property, staff, resources or confidential information to assist civil immigration enforcement, after the Board of Supervisors voted unanimously on Tuesday, October 20, to adopt a countywide policy, the county announced. The policy prohibits U.S. Immigration and Customs Enforcement (ICE) and other federal immigration agencies from using county-owned or controlled property as staging areas, processing locations or bases of operation, except where required by law.
Source: Marin County (official)
Federal officials seeking access to nonpublic county facilities must present valid authorization such as a judicial warrant, California County News reported. County employees must notify the County Executive within 24 hours of learning of immigration enforcement activity on county property, and the Sheriff's Office and Probation Department must submit monthly reports to County Counsel about their interactions with ICE.
Source: California County News
What the policy can — and cannot — do
The county was explicit about the limits: it cannot prevent federal officers from entering areas open to the general public, such as public parking lots or lobbies. What it controls is its own property, personnel, resources and the confidential information it holds through county programs and services, the county said.
Source: Marin County (official)
"Immigration enforcement has created fear for many families in our community," County Executive Derek Johnson said in the county's release. "People need to be able to turn to their local government for services and support. We have a responsibility to protect that trust and be clear about what the County can and cannot do."
Source: San Francisco Inquirer
Marin joins a broader California trend: Alameda, San Francisco, San Mateo, Santa Clara, Sonoma and Santa Cruz counties have adopted similar restrictions, California County News reported. Residents and activists who pushed for the step told the board a policy is only a first step and pressed supervisors to follow it in November with a stronger, legally binding ordinance — a policy is a promise, one resident said, while an ordinance is the law.
Source: California County News
Adopted unanimously on October 20, 2026. Bars use of county property/resources for civil immigration enforcement staging or processing except where required by law; judicial warrant required for nonpublic facilities; 24-hour employee reporting to the County Executive; monthly Sheriff/Probation reports to County Counsel. Public areas such as parking lots and lobbies are not covered.
What is solid
- Unanimous Board of Supervisors vote on October 20, 2026 adopting the countywide policy (Marin County official announcement)
- Judicial warrant or legally sufficient authority required for access to nonpublic county facilities
- Monthly reporting by the Sheriff's Office and Probation Department to County Counsel
What is only claimed
- Whether a non-binding policy is enough — activists are pressing for a binding ordinance in November, which the board has not yet adopted