The following information was taken from the "Values Act 2019" Report (the most current year for which data is available,) as published by the state DOJ.
The California Values Act (Act) defines the circumstances under which California law enforcement agencies (LEAs) may assist in the enforcement of federal immigration laws and participate in joint law enforcement task forces, and also mandates that California LEAs report specified statistics to the California Department of Justice (DOJ). Specifically, the Act requires California LEAs to report to the DOJ statistics about their participation in joint law enforcement task forces and their transfers of individuals to immigration authorities. Effective January 4, 2018, all LEAs were required to begin collecting data pursuant to the Act for submittal to the DOJ beginning on January 4, 2019. This report contains the data outlined in the statute for publication.
As the data collection process is still in its infancy, and not all required agencies have actually reported their data yet, there is little data. What we know is this: The total number of arrests made by joint law enforcement task forces in 2019 was 15,672. That said, the total number of arrests made for the purpose of immigration enforcement by task force participants in 2019 was 35.
 as detailed in Government Code section 7284 et seq., and enacted by Chapter 495, Statutes of 2017 (Senate Bill 54),
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