---
type: "Bill"
title: "Enact the Respiratory Care Interstate Compact"
description: "Enact the Respiratory Care Interstate Compact"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 447"
citation: "Montana HB 447 (2025)"
classification: ["bill"]
subjects: ["Health Care Services", "Professions and Occupations O-Z", "Rule Making"]
status: "enacted"
primary_sponsors: ["Ed Buttrey"]
version_count: 46
action_count: 43
vote_count: 5
first_action: "2024-12-24T15:15:16+00:00"
last_action: "2025-05-05T15:58:11+00:00"
source: "openstates"
source_identifier: "ocd-bill/f2254d95-f7e6-41b8-90d0-fc156c9f3b7e"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC4181?open_tab=sum"
source_hash: "f81a40d6b45e5a2a92d0ee66cda30d406f40230728a2133a99eeca044330aea6"
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-mt"]
---

# Montana HB 447 (2025) — Enact the Respiratory Care Interstate Compact

## Version chain

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

1. **HB0447.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282989)
2. **HB0447_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280900)
3. **HB0447_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281241)
4. **HB0447_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284488)
5. **HB0447_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284504)
6. **HB0447_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284505)
7. **HB0447_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284506)
8. **HB0447_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284507)
9. **HB0447_1(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310168)
10. **HB0447_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280702)
11. **HB0447_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284510)
12. **HB0447_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310167)
13. **HB0447_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310173)
14. **HB0447_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310175)
15. **HB0447_2(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310176)
16. **HB0447_2(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310182)
17. **HB0447_2(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310184)
18. **HB0447_2(16).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310255)
19. **HB0447_2(17).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310256)
20. **HB0447_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284523)
21. **HB0447_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284557)
22. **HB0447_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284558)
23. **HB0447_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284559)
24. **HB0447_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287676)
25. **HB0447_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295879)
26. **HB0447_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309912)
27. **HB0447_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310058)
28. **HB0447_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284508)
29. **HB0447_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310264)
30. **HB0447_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317087)
31. **HB0447_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320653)
32. **HB0447_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321490)
33. **HB0447_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321491)
34. **HB0447_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321492)
35. **HB0447_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=322122)
36. **HB0447_X(16).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324813)
37. **HB0447_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310278)
38. **HB0447_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311070)
39. **HB0447_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312279)
40. **HB0447_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312280)
41. **HB0447_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312281)
42. **HB0447_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312486)
43. **HB0447_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312487)
44. **HB0447_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=312539)
45. **HB0447_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310257)
46. **LC4181.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=278232)

## Votes

- Do Pass — **100–0** (pass) · lower
- Do Concur — **40–8** (pass) · upper
- be_concurred_in — **12–0** (pass) · upper
- Do Pass — **99–1** (pass) · lower
- Do Concur — **47–3** (pass) · upper

## Sponsors

- Ed Buttrey — primary (person)

## Timeline

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

- **2024-12-24T15:15:16+00:00** (LC) Drafter Assigned
- **2025-01-24T20:43:04+00:00** (LC) Draft in Legal Review
- **2025-01-26T21:30:42+00:00** (LC) Draft in Edit
- **2025-01-29T18:29:17+00:00** (LC) Drafter Assigned
- **2025-01-29T18:47:05+00:00** (LC) Draft in Legal Review
- **2025-01-29T18:55:41+00:00** (LC) Draft in Edit
- **2025-02-03T17:26:56+00:00** (LC) Draft in Input/Proofing
- **2025-02-03T18:27:45+00:00** (LC) Draft in Final Drafter Review
- **2025-02-04T19:10:49+00:00** (LC) Draft in Assembly
- **2025-02-05T14:10:54+00:00** (LC) Draft Ready for Delivery
- **2025-02-10T22:58:00+00:00** (LC) Draft Delivered to Requester
- **2025-02-11T14:36:06+00:00** (H) Introduced
- **2025-02-11T14:40:35+00:00** (H) Fiscal Note Requested
- **2025-02-11T17:39:37+00:00** (H) Referred to Committee - (H) Business and Labor `referral-committee`
- **2025-02-11T20:01:28+00:00** (H) First Reading `reading-1`
- **2025-02-14T20:43:37+00:00** (H) Hearing - (H) Business and Labor
- **2025-02-18T20:49:25+00:00** (H) Fiscal Note Received `receipt`
- **2025-02-18T20:54:26+00:00** (H) Fiscal Note Signed
- **2025-02-18T21:34:55+00:00** (H) Fiscal Note Printed
- **2025-02-19T18:52:31+00:00** (H) Committee Executive Action--Bill Passed as Amended - (H) Business and Labor `committee-passage`
- **2025-02-19T21:47:00+00:00** (H) Committee Report--Bill Passed as Amended - (H) Business and Labor `committee-passage`
- **2025-02-24T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-02-24T21:10:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-02-25T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-02-25T21:07:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-02-25T21:21:47+00:00** (H) Transmitted to Senate
- **2025-02-26T20:25:19+00:00** (S) First Reading `reading-1`
- **2025-03-03T21:27:46+00:00** (S) Referred to Committee - (S) Business, Labor and Economic Affairs `referral-committee`
- **2025-03-06T18:39:14+00:00** (S) Hearing - (S) Business, Labor and Economic Affairs
- **2025-03-15T16:33:45+00:00** (S) Hearing - (S) Business, Labor and Economic Affairs
- **2025-03-20T17:23:47+00:00** (S) Committee Executive Action--Bill Concurred - (S) Business, Labor and Economic Affairs
- **2025-03-20T21:54:00+00:00** (S) Committee Report--Bill Concurred - (S) Business, Labor and Economic Affairs
- **2025-04-10T14:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T16:22:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T16:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T21:33:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-11T21:33:33+00:00** (H) Sent to Enrolling
- **2025-04-17T05:36:05+00:00** (H) Returned from Enrolling
- **2025-04-23T22:30:00+00:00** (H) Signed by Speaker `passage`
- **2025-04-25T13:30:00+00:00** (S) Signed by President `passage`
- **2025-04-25T17:55:00+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-01T21:14:29+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-05T15:58:11+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f2254d95-f7e6-41b8-90d0-fc156c9f3b7e`. Confidence: reported (aggregated from official Montana legislature records).