republic-os/legislation/us/states/ca/20132014/ab-4.md

---
type: "Bill"
title: "State government: federal immigration policy enforcement."
description: "Existing federal law authorizes any authorized immigration officer to issue an immigration detainer that serves to advise another law enforcement agency that the federal department seeks custody of an alien presently in the custody of that agency, for the purpose of arresting and removing the alien. Existing federal law provides that the detainer is a request that the agency advise the department, prior to release of the alien, in order for the department to arrange to assume custody in situations when gaining immediate physical custody is either impracticable or impossible."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20132014"
identifier: "AB 4"
citation: "California AB 4 (20132014)"
classification: ["bill"]
subjects: ["State government: federal immigration policy enforcement."]
status: "enacted"
primary_sponsors: ["Ammiano"]
version_count: 7
action_count: 23
vote_count: 5
first_action: "2012-12-03"
last_action: "2013-10-05"
source: "openstates"
source_identifier: "ocd-bill/bed43200-36a3-4f19-a7f9-5ed93857a745"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201320140AB4"
source_hash: "fb6ce1dfcb4647b09f32f6b4deb625fcb619524efc9f166296818b72b15a4e2f"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 4 (20132014) — State government: federal immigration policy enforcement.

Existing federal law authorizes any authorized immigration officer to issue an immigration detainer that serves to advise another law enforcement agency that the federal department seeks custody of an alien presently in the custody of that agency, for the purpose of arresting and removing the alien. Existing federal law provides that the detainer is a request that the agency advise the department, prior to release of the alien, in order for the department to arrange to assume custody in situations when gaining immediate physical custody is either impracticable or impossible.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **12/03/12 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB499INT)
2. **06/14/13 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB498AMD)
3. **06/24/13 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB497AMD)
4. **09/04/13 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB496AMD)
5. **10/05/13 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB494CHP)
6. **AB4** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201320140AB4)
7. **09/16/13 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201320140AB4&version=20130AB495ENR)

## Votes

- Do pass. — **5–2** (pass) · upper
- Do pass. — **5–2** (pass) · lower
- AB 4 AMMIANO Concurrence in Senate Amendments — **48–25** (pass) · lower
- 3rd Reading AB4 Ammiano By De León — **25–11** (pass) · upper
- AB 4 AMMIANO Assembly Third Reading — **44–22** (pass) · lower

## Sponsors

- Ammiano — primary (person)
- Alejo — principal coauthor (person)
- De León — principal coauthor (person)
- Skinner — coauthor (person)
- V. Manuel Pérez — principal coauthor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2012-12-03** Read first time. To print. `reading-1`
- **2012-12-04** From printer. May be heard in committee January 3.
- **2013-01-14** Referred to Com. on PUB. S. `referral-committee`
- **2013-04-10** From committee: Do pass. (Ayes 5. Noes 2.) (April 9). `committee-passage-favorable, committee-passage`
- **2013-04-11** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2013-05-16** Read third time. Passed. Ordered to the Senate. (Ayes 44. Noes 22. Page 1445.) `reading-3, reading-1, passage`
- **2013-05-16** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2013-05-29** Referred to Com. on PUB. S. `referral-committee`
- **2013-06-14** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on PUB. S. `amendment-introduction, amendment-passage, reading-2, reading-1, referral-committee`
- **2013-06-19** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2013-06-24** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on PUB. S. `amendment-introduction, amendment-passage, reading-2, reading-1, referral-committee`
- **2013-07-02** From committee: Do pass. (Ayes 5. Noes 2.) (July 2). `committee-passage-favorable, committee-passage`
- **2013-07-03** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2013-09-04** Read third time and amended. Ordered to second reading. `reading-3, reading-1, amendment-passage`
- **2013-09-05** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2013-09-09** Read third time. Passed. Ordered to the Assembly. (Ayes 25. Noes 11. Page 2259.). `reading-3, reading-1, passage`
- **2013-09-09** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 11 pursuant to Assembly Rule 77.
- **2013-09-10** Assembly Rule 77 suspended. (Ayes 53. Noes 25. Page 3064.)
- **2013-09-10** Assembly Rule 63 suspended. (Ayes 53. Noes 25. Page 3064.)
- **2013-09-10** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 48. Noes 25. Page 3086.). `committee-passage-favorable, amendment-passage`
- **2013-09-18** Enrolled and presented to the Governor at 9:45 a.m.
- **2013-10-05** Approved by the Governor. `executive-signature`
- **2013-10-05** Chaptered by Secretary of State - Chapter 570, Statutes of 2013.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/bed43200-36a3-4f19-a7f9-5ed93857a745`. Confidence: reported (aggregated from official California legislature records).