Special Notice / Hearing: None__
Vote Required: Majority
To: Honorable Board of Supervisors
From: Ken Binder, Sheriff's Office
Subject: Sheriff's Office Compliance Report - pursuant to Chapter 2.48 of Title 2 of the San Mateo County Ordinance Code
RECOMMENDATION:
title
Accept the Sheriff's Office Report on interactions with Immigration Authorities, pursuant to Chapter 2.48 of Title 2 of the San Mateo County Ordinance Code.
body
BACKGROUND:
On December 2, 2025, the San Mateo County Board of Supervisors adopted an ordinance amending Chapter 2.48 of Title 2 of the San Mateo County Ordinance Code that requires the Sheriff's Office to provide a written report on known immigration activities within the Sheriff's Office jurisdiction, including civil immigration detainer requests as well as any communications related to immigration authorities by March 1, June 1, September 1 and December 1 of each year.
DISCUSSION:
The Sheriff's Office is committed to maintaining public safety and public trust and ensuring transparency within San Mateo County, particularly among immigrant communities.
DEFINITIONS:
An Immigration Detainer is a request from the U.S. Immigration and Customs Enforcement (ICE) to a local jail or police department.
What it is:
A notice saying: "If you're about to release this person, please hold them for up to 48 extra hours so ICE can come pick them up."
Important:
* It is NOT signed by a Judge.
* It IS an administrative request from a federal immigration agency.
* The San Mateo County Sheriff's Office does NOT act on Immigration Detainers, pursuant to the California Values Act (SB 54) and County ordinance.
A Judicial Warrant is an official order signed by a Judge.
What it is:
A Judge reviews evidence and formally orders law enforcement to act upon something specific including:
* To arrest someone
* To take someone into custody
Judicial Booking is:
Taking custody of the person who has been arrested and processing them within the ...
Click here for full text