Efforts to allow recreational pot in Hawaiʻi appear to have been delivered a fatal blow at the Legislature this year with a key Senate committee effectively killing a marijuana legalization measure.

Half the Democrats in the state Senate had co-sponsored Senate Majority Leader J. Kalani English's measure to allow recreational pot, helping spur speculation this would be the year legalization becomes reality.

But the effort fizzled as other leaders worried about contradicting federal law, which continues to classify marijuana as an illegal drug, and jeopardizing Hawaiʻi's existing medical marijuana program.

To move forward, the bill had to pass the Senate Health Committee and Senate Ways and Means Committee by today's deadline so it could be considered by the full Senate. But the Health Committee did not schedule a meeting today to consider any bills, effectively killing the marijuana legalization measure.

On the political spectrum, Hawaiʻi is among the bluest of states. Democrats control all the levers of power at the state and federal levels, and voters back Democratic presidential candidates over Republicans by some of the widest margins in the U.S.

The state has committed to the Paris climate agreement that President Donald Trump rejected and was the first state to require people to be 21 to buy cigarettes. The tourist haven even banned certain types of sunscreen because they can harm coral reefs.

But when it comes to legalizing recreational marijuana for adult use, the islands are out of step with liberal stalwarts such as California and Vermont that have already done so, and other left-leaning states such as New York and New Jersey that are racing toward joining them.

English has introduced marijuana legalization bills for the past 15 years — but Hawaiʻi has a track record of moving slowly on social issues. For example, other states moved far more quickly to sanction gay marriage and medically assisted suicide.

While his legalization bill made it farther in the legislative process than previous efforts, it died when lawmakers failed to consider it in time for its internal deadline.

Rep. Della Au Belatti, the House majority leader, said before the bill died that she believes Hawaii will legalize adult use marijuana at some point. But she said lawmakers will vet the issue carefully.

"I also think that we have enough folks who are sitting around the table who are saying, 'Let's do it right. Let's not just rush into things and let's do it right,'" she said.

Belatti said lawmakers must closely study the experiences of states that have already legalized marijuana. She also wants to have abuse prevention, treatment and education programs set up before legalization. Hawaiʻi also will have to make sure legalized marijuana doesn't lead to more impaired driving, she said.

For now, Belatti said she's just inclined toward decriminalizing marijuana, or reducing fines and criminal penalties for possession.

Twelve states and the District of Columbia have recreational marijuana laws. All except Vermont did it by ballot initiative, an option not available in Hawaiʻi.

State Sen. Karl Rhoads, the chairman of the Senate Judiciary Committee, said Hawaii residents are becoming more accepting of legalization now because it has happened elsewhere and "the world hasn't come to an end." There's also recognition that the status quo isn't working, he said, noting that juniors at a high school near his district tell him they can get pot whenever they want.

"It's like Prohibition," he said. "We've been trying to squish it out, squeeze it out, by making it illegal. And it's just failed miserably."

Rhoads' committee passed an amended version of English's bill last month, the first time a legalization measure has ever made it out of any committee.

Health Committee Chairwoman Sen. Roz Baker said she did not want to do anything that would threaten Hawaii's nascent medical cannabis dispensary system. Dispensary sales began just two years ago.

Baker believes the federal government will leave medical marijuana alone but might take a more active approach to enforcing federal drug laws if Hawaiʻi takes the next step. Democratic Gov. David Ige expressed similar concerns.

Rep. Joy San Buenaventura said it did not make sense to push the measure through without Ige's support. San Buenaventura represents Puna, a mostly rural area on the Big Island long known for pot growing.

Brian Goldstein, the founder and CEO of the medical marijuana dispensary Noa Botanicals, said it is inevitable Hawaii will eventually allow adult use. He acknowledged it may take a while.

Hawaiʻi's Legislature approved medical marijuana in 2000 — four years after California became the first state with such a law — but it took island lawmakers another 15 years to set up a dispensary system.

Carl Bergquist, the executive director of the pro-legalization Drug Policy Forum of Hawaii, said progress is being made even though the idea failed again this year.

"It's a huge step ... just to have that conversation started," he said.