---
type: "Bill"
title: "Slayer rule-amendments."
description: "2021/Summaries/SF0066.pdf"
jurisdiction: "us/states/wy"
legislature: "Wyoming Legislature"
session: "2021"
identifier: "SF 66"
citation: "Wyoming SF 66 (2021)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Cooper"]
version_count: 10
action_count: 24
vote_count: 5
first_action: "2021-01-16T02:21:40+00:00"
last_action: "2021-04-06T20:22:24+00:00"
source: "openstates"
source_identifier: "ocd-bill/5c0a759f-00c3-4c8b-b913-475b4a7bc297"
source_url: "http://lso.wyoleg.gov/Legislation/2021/SF0066"
source_hash: "7e19301a345fa23d568b47dc240c1fcac1254172a41e4587bc36410cb4bae1d1"
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-wy"]
---

# Wyoming SF 66 (2021) — Slayer rule-amendments.

2021/Summaries/SF0066.pdf

## Version chain

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

1. **Introduced** (filed) — [source](http://wyoleg.gov/2021/Introduced/SF0066.pdf)
2. **Amendment SF0066H2001 (2nd reading) - Representative Duncan (Withdrawn)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066H2001.pdf)
3. **Amendment SF0066H3001 (3rd reading) - Representative Crago (Adopted)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066H3001.pdf)
4. **Amendment SF0066HS001 (Standing Committee) - House Judiciary Committee (Adopted)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066HS001.pdf)
5. **Amendment SF0066S2001 (2nd reading) - Senator Perkins (Adopted)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066S2001.pdf)
6. **Amendment SF0066S2002 (2nd reading) - Senator Case (Failed)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066S2002.pdf)
7. **Amendment SF0066S2003 (2nd reading) - Senator Case (Failed)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066S2003.pdf)
8. **Amendment SF0066SS001 (Standing Committee) - Senate Judiciary Committee (Adopted)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066SS001.pdf)
9. **Amendment SF0066SW001 (Committee of the Whole) - Senator Perkins (Corrected, Adopted)** (committee substitute) — [source](http://wyoleg.gov/2021/Amends/SF0066SW001.pdf)
10. **Enrolled** (enrolled) — [source](http://wyoleg.gov/2021/Enroll/SF0066.pdf)

## Votes

- S01 - Judiciary:Recommend Amend and Do Pass 5-0-0-0-0 — **5–0** (pass) · upper
- S Concur:Passed 29-1-0-0-0 — **29–1** (pass) · upper
- H01 - Judiciary:Recommend Amend and Do Pass 9-0-0-0-0 — **9–0** (pass) · lower
- S 3rd Reading:Passed 28-1-1-0-0 — **28–1** (pass) · upper
- H 3rd Reading:Passed 59-1-0-0-0 — **59–1** (pass) · lower

## Sponsors

- Cooper — primary (person)
- Greear — cosponsor (person)
- Hutchings — cosponsor (person)
- Nethercott — cosponsor (person)
- Oakley — cosponsor (person)
- Winter — cosponsor (person)

## Timeline

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

- **2021-04-06T20:22:24+00:00** Assigned Chapter Number 117
- **2021-04-06T20:22:15+00:00** Governor Signed SEA No. 0056 `executive-signature`
- **2021-04-02T22:26:16+00:00** H Speaker Signed SEA No. 0056
- **2021-04-02T15:46:48+00:00** S President Signed SEA No. 0056
- **2021-04-01T23:44:40+00:00** Assigned Number SEA No. 0056
- **2021-04-01T20:24:52+00:00** S Concur:Passed 29-1-0-0-0
- **2021-04-01T20:23:39+00:00** S Received for Concurrence
- **2021-04-01T17:00:26+00:00** H 3rd Reading:Passed 59-1-0-0-0 `passage, reading-3`
- **2021-03-31T16:27:37+00:00** H 2nd Reading:Passed `reading-2`
- **2021-03-30T22:03:15+00:00** H COW:Passed
- **2021-03-26T22:11:27+00:00** H Placed on General File
- **2021-03-26T22:11:11+00:00** H01 - Judiciary:Recommend Amend and Do Pass 9-0-0-0-0 `committee-passage-favorable`
- **2021-03-22T16:43:00+00:00** H Introduced and Referred to H01 - Judiciary `introduction, referral-committee`
- **2021-03-19T22:51:53+00:00** H Received for Introduction `filing`
- **2021-03-19T16:19:13+00:00** S 3rd Reading:Passed 28-1-1-0-0 `passage, reading-3`
- **2021-03-18T17:31:14+00:00** S 2nd Reading:Passed `reading-2`
- **2021-03-17T16:15:45+00:00** S 2nd Reading:Laid Back
- **2021-03-12T18:20:08+00:00** S 2nd Reading:Laid Back
- **2021-03-12T00:46:17+00:00** S COW:Passed
- **2021-03-08T21:05:22+00:00** S Placed on General File
- **2021-03-08T21:05:13+00:00** S01 - Judiciary:Recommend Amend and Do Pass 5-0-0-0-0 `committee-passage-favorable`
- **2021-02-04T22:30:45+00:00** S Introduced and Referred to S01 - Judiciary `introduction, referral-committee`
- **2021-01-25T22:25:10+00:00** S Received for Introduction `filing`
- **2021-01-16T02:21:40+00:00** Bill Number Assigned

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/5c0a759f-00c3-4c8b-b913-475b4a7bc297`. Confidence: reported (aggregated from official Wyoming legislature records).