republic-os/legislation/us/states/ca/20112012/ab-100.md

---
type: "Bill"
title: "Mental Health Services Act."
description: "Existing law contains provisions governing the operation and financing of community mental health services for the mentally disordered in every county through locally administered and locally controlled community mental health programs. Existing law, the Mental Health Services Act, an initiative measure enacted by the voters as Proposition 63 at the November 2, 2004, statewide general election, funds a system of county mental health plans for the provision of mental health services, as specified. The act provides that it may be amended by the Legislature by a 23 vote of each house as long as the amendment is consistent with and furthers the intent of the act, and that the Legislature may also clarify procedures and terms of the act by majority vote."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 100"
citation: "California AB 100 (20112012)"
classification: ["bill", "appropriation"]
subjects: ["Mental Health Services Act."]
status: "enacted"
primary_sponsors: ["Committee on Budget"]
version_count: 5
action_count: 20
vote_count: 4
first_action: "2011-01-10"
last_action: "2011-03-24"
source: "openstates"
source_identifier: "ocd-bill/5a6f35c6-d810-4ff6-bb91-359437bf9d76"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB100"
source_hash: "123a7230bf62a9a7c5f2eb6924f7984a0a5e8919418fff0b5fad64240fef8a07"
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 100 (20112012) — Mental Health Services Act.

Existing law contains provisions governing the operation and financing of community mental health services for the mentally disordered in every county through locally administered and locally controlled community mental health programs. Existing law, the Mental Health Services Act, an initiative measure enacted by the voters as Proposition 63 at the November 2, 2004, statewide general election, funds a system of county mental health plans for the provision of mental health services, as specified. The act provides that it may be amended by the Legislature by a 23 vote of each house as long as the amendment is consistent with and furthers the intent of the act, and that the Legislature may also clarify procedures and terms of the act by majority vote.

## Version chain

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

1. **01/10/11 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB100&version=20110AB10099INT)
2. **03/14/11 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB100&version=20110AB10098AMD)
3. **03/24/11 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB100&version=20110AB10096CHP)
4. **AB100** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB100)
5. **03/17/11 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB100&version=20110AB10097ENR)

## Votes

- 3rd Reading AB100 Committee on BUDGET (Blumenfield) By Leno Urgency Clause — **37–2** (pass) · upper
- AB 100 BUDGET Assembly Third Reading By BLUMENFIELD — **49–0** (pass) · lower
- Do pass. — **11–5** (pass) · upper
- AB 100 BUDGET Concurrence - Urgency Added By BLUMENFIELD — **57–16** (pass) · lower

## Sponsors

- Committee on Budget — primary (person)

## Timeline

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

- **2011-01-10** Read first time. To print. `reading-1`
- **2011-01-11** From printer. May be heard in committee February 10.
- **2011-02-18** Without reference to committee. `referral-committee`
- **2011-02-18** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-02-22** Read third time. Passed. Ordered to the Senate. (Ayes 49. Noes 0. Page 416.) `reading-3, reading-1, passage`
- **2011-02-22** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2011-03-07** Ordered to second reading.
- **2011-03-07** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-03-14** Read third time and amended. Ordered to second reading. `reading-3, reading-1, amendment-passage`
- **2011-03-15** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2011-03-16** Re-referred to Com. on B. & F.R. pursuant to Joint Rule 10.5. `referral-committee`
- **2011-03-16** From committee: Do pass. (Ayes 11. Noes 5.) (March 16). `committee-passage, committee-passage-favorable`
- **2011-03-16** Ordered to third reading.
- **2011-03-16** Read third time. Urgency clause adopted. Passed. Ordered to the Assembly. (Ayes 37. Noes 2. Page 352.). `reading-3, reading-1, passage`
- **2011-03-16** In Assembly. Concurrence in Senate amendments pending. May be considered on or after March 18 pursuant to Assembly Rule 77.
- **2011-03-16** Assembly Rule 77 suspended. (Page 585.)
- **2011-03-16** Urgency clause adopted. Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 57. Noes 16. Page 586.). `committee-passage-favorable, amendment-passage`
- **2011-03-22** Enrolled and presented to the Governor at 5 p.m.
- **2011-03-24** Approved by the Governor. `executive-signature`
- **2011-03-24** Chaptered by Secretary of State - Chapter 5, Statutes of 2011.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/5a6f35c6-d810-4ff6-bb91-359437bf9d76`. Confidence: reported (aggregated from official California legislature records).