Legislation: batch B — IL IN KS KY LA MA MD ME MI MN

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

legislation/us/states/mi/2017-2018/hb-4973.md

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+---
+type: "Bill"
+title: "Civil rights; public records; public body records, documents, or information disclosable under freedom of information act; exempt critical energy infrastructure and cybersecurity-related information. Amends secs. 2 & 13 of 1976 PA 442 (MCL 15.232 & 15.243)."
+description: "Civil rights; public records; public body records, documents, or information disclosable under freedom of information act; exempt critical energy infrastructure and cybersecurity-related information. Amends secs. 2 & 13 of 1976 PA 442 (MCL 15.232 & 15.243)."
+jurisdiction: "us/states/mi"
+legislature: "Michigan Legislature"
+session: "2017-2018"
+identifier: "HB 4973"
+citation: "Michigan HB 4973 (2017-2018)"
+classification: ["bill"]
+subjects: ["Civil rights: public records"]
+status: "enacted"
+primary_sponsors: []
+version_count: 5
+action_count: 30
+vote_count: 3
+first_action: "2017-09-19T04:00:00+00:00"
+last_action: "2018-03-20T04:00:00+00:00"
+source: "openstates"
+source_identifier: "ocd-bill/c648b403-c109-46bc-9dd8-0fa5ce69862c"
+source_url: "http://legislature.mi.gov/doc.aspx?2017-HB-4973"
+source_hash: "ee9a18cdaf94ac1a73bae2158d98e4d8f9cca64af5d6ba9b509b5ecf0accb2d3"
+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-mi"]
+---
+
+# Michigan HB 4973 (2017-2018) — Civil rights; public records; public body records, documents, or information disclosable under freedom of information act; exempt critical energy infrastructure and cybersecurity-related information. Amends secs. 2 & 13 of 1976 PA 442 (MCL 15.232 & 15.243).
+
+## Version chain
+
+The bill's text revisions, in order — the diff chain from filing to enrollment.
+
+1. **As Passed by the House** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/House/htm/2017-HEBH-4973.htm)
+2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/House/htm/2017-HEBS-4973.htm)
+3. **House Concurred Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billconcurred/House/htm/2017-HCB-4973.htm)
+4. **House Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/House/htm/2017-HIB-4973.htm)
+5. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2018-PA-0068.htm)
+
+## Votes
+
+- passed; given immediate effect Roll Call # 327 Yeas 101 Nays 5 — **101–5** (pass) · lower
+- Roll Call # 129 Yeas 104 Nays 4 — **104–4** (pass) · lower
+- PASSED; GIVEN IMMEDIATE EFFECT ROLL CALL # 124 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 — **36–0** (pass) · upper
+
+## Sponsors
+
+- 61 — cosponsor (person)
+- Brandt Iden — cosponsor (person)
+
+## Timeline
+
+The legislative action history — every referral, reading, and vote.
+
+- **2017-09-19T04:00:00+00:00** introduced by Representative Brandt Iden `introduction`
+- **2017-09-19T04:00:00+00:00** read a first time `reading-1`
+- **2017-09-19T04:00:00+00:00** referred to Committee on Communications and Technology `referral-committee`
+- **2017-09-20T04:00:00+00:00** bill electronically reproduced 09/19/2017
+- **2017-10-17T04:00:00+00:00** reported with recommendation without amendment `committee-passage`
+- **2017-10-17T04:00:00+00:00** referred to second reading
+- **2017-10-24T04:00:00+00:00** read a second time `reading-2`
+- **2017-10-24T04:00:00+00:00** placed on third reading
+- **2017-10-25T04:00:00+00:00** read a third time `reading-3`
+- **2017-10-25T04:00:00+00:00** passed; given immediate effect Roll Call # 327 Yeas 101 Nays 5 `passage`
+- **2017-10-25T04:00:00+00:00** transmitted
+- **2017-10-31T04:00:00+00:00** REFERRED TO COMMITTEE ON ELECTIONS AND GOVERNMENT REFORM `referral-committee`
+- **2018-02-27T05:00:00+00:00** REPORTED FAVORABLY WITHOUT AMENDMENT `committee-passage`
+- **2018-02-27T05:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
+- **2018-02-27T05:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE `referral-committee`
+- **2018-02-28T05:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE S-1 `committee-passage`
+- **2018-02-28T05:00:00+00:00** SUBSTITUTE S-1 CONCURRED IN
+- **2018-02-28T05:00:00+00:00** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE S-1
+- **2018-03-01T05:00:00+00:00** PASSED; GIVEN IMMEDIATE EFFECT ROLL CALL # 124 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 `passage`
+- **2018-03-01T05:00:00+00:00** INSERTED FULL TITLE
+- **2018-03-01T05:00:00+00:00** returned from Senate with substitute S-1 with immediate effect and full title
+- **2018-03-01T05:00:00+00:00** laid over one day under the rules
+- **2018-03-06T05:00:00+00:00** Senate substitute S-1 concurred in
+- **2018-03-06T05:00:00+00:00** Roll Call # 129 Yeas 104 Nays 4
+- **2018-03-06T05:00:00+00:00** full title agreed to
+- **2018-03-06T05:00:00+00:00** bill ordered enrolled
+- **2018-03-13T04:00:00+00:00** presented to the Governor 3/8/2018 @ 2:10 PM `executive-receipt`
+- **2018-03-20T04:00:00+00:00** approved by the Governor 3/19/2018 @ 11:35 AM `executive-signature`
+- **2018-03-20T04:00:00+00:00** filed with Secretary of State 3/19/2018 @ 1:06 PM
+- **2018-03-20T04:00:00+00:00** assigned PA 68'18 with immediate effect
+
+## Source
+
+OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c648b403-c109-46bc-9dd8-0fa5ce69862c`. Confidence: reported (aggregated from official Michigan legislature records).
+