---
type: "Bill"
title: "Public health and safety; modifying scope of marijuana definition; effective date."
description: "Public health and safety; modifying scope of marijuana definition; effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2017-2018"
identifier: "HB 1559"
citation: "Oklahoma HB 1559 (2017-2018)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Echols", "Yen"]
version_count: 5
action_count: 22
vote_count: 3
first_action: "2017-02-06"
last_action: "2017-04-17"
source: "openstates"
source_identifier: "ocd-bill/1d53c1a4-3744-484b-a45e-37da5e6de95c"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=HB1559&session=1800"
source_hash: "3e4bc6c013cf852507dcc9b97b13f8c0be5d7e1f36c9639855b655f4a10b0b4f"
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-ok"]
---

# Oklahoma HB 1559 (2017-2018) — Public health and safety; modifying scope of marijuana definition; effective date.

## Version chain

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

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 INT/hB/HB1559 INT.PDF)
2. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENGR/hB/HB1559 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENR/hB/HB1559 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/HFLR/HB1559 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/SFLR/HB1559 SFLR.PDF)

## Votes

- THIRD READING — **44–0** (pass) · upper
- SUSPEND HOUSE — **83–0** (pass) · lower
- THIRD READING — **80–7** (pass) · lower

## Sponsors

- Echols — primary (person)
- Yen — primary (person)

## Timeline

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

- **2017-02-06** First Reading `introduction, reading-1`
- **2017-02-06** Authored by Representative Echols
- **2017-02-07** Second Reading referred to Health Services and Long-Term Care `reading-2, referral-committee`
- **2017-02-08** CR; Do Pass Health Services and Long-Term Care Committee `committee-passage`
- **2017-03-14** General Order
- **2017-03-14** Authored by Senator Yen (principal Senate author)
- **2017-03-14** House Rule suspended
- **2017-03-14** Amended `amendment-passage`
- **2017-03-14** Third Reading, Measure passed: Ayes: 80 Nays: 7 `reading-3, passage`
- **2017-03-14** Referred for engrossment
- **2017-03-20** Engrossed, signed, to Senate `passage`
- **2017-03-20** First Reading `introduction, reading-1`
- **2017-03-27** Second Reading referred to Health and Human Services `reading-2, referral-committee`
- **2017-04-03** Reported Do Pass Health and Human Services committee; CR filed `committee-passage`
- **2017-04-10** General Order, Considered
- **2017-04-10** Measure passed: Ayes: 44 Nays: 0 `passage`
- **2017-04-10** Engrossed measure signed, returned to House `passage`
- **2017-04-10** Referred for enrollment
- **2017-04-11** Enrolled, signed, to Senate
- **2017-04-11** Enrolled measure signed, returned to House
- **2017-04-11** Sent to Governor `executive-receipt`
- **2017-04-17** Approved by Governor 04/17/2017 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/1d53c1a4-3744-484b-a45e-37da5e6de95c`. Confidence: reported (aggregated from official Oklahoma legislature records).