---
type: "Bill"
title: "CRIM PRO-MENTAL DISORDER"
description: "Amends the Sexually Dangerous Persons Act. Provides that \"mental disorder\" means a congenital or acquired condition affecting the emotional or volitional capacity that predisposes a person to engage in acts of sexual violence."
jurisdiction: "us/states/il"
legislature: "Illinois General Assembly"
session: "94th"
identifier: "HB 2459"
citation: "Illinois HB 2459 (94th)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 27
vote_count: 2
first_action: "2005-02-17"
last_action: "2005-12-05"
source: "openstates"
source_identifier: "ocd-bill/6af1e7c3-39dd-43ca-9685-dd35947c4b1a"
source_url: "http://ilga.gov/legislation/BillStatus.asp?DocNum=2459&GAID=8&DocTypeID=HB&LegId=17520&SessionID=50&GA=94"
source_hash: "54caf64be4ff74c32c47d6a8242d404793554283bd9b490ba63486a881c50c39"
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-il"]
---

# Illinois HB 2459 (94th) — CRIM PRO-MENTAL DISORDER

Amends the Sexually Dangerous Persons Act. Provides that "mental disorder" means a congenital or acquired condition affecting the emotional or volitional capacity that predisposes a person to engage in acts of sexual violence.

## Version chain

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

1. **Introduced** (filed) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=09400HB2459&GA=94&SessionId=50&DocTypeId=HB&LegID=17520&DocNum=2459&GAID=8&Session=&print=true)
2. **Engrossed** (committee substitute) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=09400HB2459eng&GA=94&SessionId=50&DocTypeId=HB&LegID=17520&DocNum=2459&GAID=8&Session=&print=true)
3. **Enrolled** (enrolled) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=09400HB2459enr&GA=94&SessionId=50&DocTypeId=HB&LegID=17520&DocNum=2459&GAID=8&Session=&print=true)

## Votes

- Third Reading — **113–0** (pass) · lower
- Third Reading — **58–0** (pass) · upper

## Sponsors

- Sidney H. Mathias — primary (person)

## Timeline

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

- **2005-02-17** Filed with the Clerk by Rep. Sidney H. Mathias `filing`
- **2005-02-17** First Reading `reading-1`
- **2005-02-17** Referred to Rules Committee `referral-committee`
- **2005-02-18** Assigned to Judiciary II - Criminal Law Committee `referral-committee`
- **2005-02-25** Do Pass / Short Debate Judiciary II - Criminal Law Committee; 016-000-000 `committee-passage`
- **2005-02-28** Placed on Calendar 2nd Reading - Short Debate
- **2005-03-03** Second Reading - Short Debate `reading-2`
- **2005-03-03** Placed on Calendar Order of 3rd Reading - Short Debate
- **2005-03-10** Third Reading - Short Debate - Passed 113-000-000 `reading-3, passage`
- **2005-03-15** Arrive in Senate `introduction`
- **2005-03-15** Placed on Calendar Order of First Reading March 16, 2005 `reading-1`
- **2005-04-12** Added Chief Co-Sponsor Rep. Robert F. Flider
- **2005-05-04** Chief Senate Sponsor Sen. Terry Link
- **2005-05-05** First Reading `reading-1`
- **2005-05-05** Referred to Rules `referral-committee`
- **2005-10-19** Rule 2-10 Third Reading Deadline Extended to December 31, 2005 `reading-3`
- **2005-10-19** Assigned to Judiciary `referral-committee`
- **2005-10-25** Do Pass Judiciary; 007-000-000 `committee-passage`
- **2005-10-25** Placed on Calendar Order of 2nd Reading October 26, 2005
- **2005-10-26** Second Reading `reading-2`
- **2005-10-26** Placed on Calendar Order of 3rd Reading October 27, 2005
- **2005-10-27** Third Reading - Passed; 058-000-000 `reading-3, passage`
- **2005-10-27** Passed Both Houses
- **2005-11-23** Sent to the Governor `executive-receipt`
- **2005-12-05** Governor Approved `executive-signature`
- **2005-12-05** Effective Date June 1, 2006
- **2005-12-05** Public Act . . . . . . . . . 94-0705 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/6af1e7c3-39dd-43ca-9685-dd35947c4b1a`. Confidence: reported (aggregated from official Illinois legislature records).