Hawaii becomes the first state to legalize medical cannabis through its legislature

On June 14, 2000, Hawaii Governor Ben Cayetano signed Senate Bill 862 (Act 228) into law, making Hawaii the first state in the United States to legalize medical cannabis through an act of its state legislature rather than a citizen ballot initiative.

Why legislative passage was a turning point

Every state medical cannabis law enacted between 1996 and 1999—in California, Alaska, Oregon, Washington, and Maine—had been placed on the ballot by citizen petition. Nearly half of U.S. states do not allow citizen-initiated statutes or constitutional amendments, meaning residents in those states could only gain access to medical cannabis if elected lawmakers voted for it.

Hawaii’s legislature passed SB 862 by a 32–18 vote in the House and a 13–12 vote in the Senate, proving that state lawmakers could pass medical cannabis reform and withstand federal pressure.

What Hawaii’s Act 228 established

• Patient registry: Qualifying patients with debilitating medical conditions (such as cancer, glaucoma, HIV/AIDS, severe pain, severe nausea, seizures, or persistent muscle spasms) could register with the state to possess and grow a limited supply of medical cannabis.
• Later dispensary expansion: While the original 2000 law relied on home cultivation by patients or caregivers, Hawaii later enacted a licensed medical dispensary system in 2015.

Colorado and Nevada follow in November 2000

Later that same year, on Election Day (November 7, 2000), voters in two Western states added constitutional medical cannabis protections: Colorado voters approved Amendment 20 with 53.55% Yes, and Nevada voters gave final approval to Question 9 with 65.39% Yes.