AUDIE CORNISH, HOST:
In Washington State, regulators are finalizing rules for the new state-sanctioned market in recreational marijuana. But the man hired to shape those rules is raising a warning to local law enforcement. He says the state's experiment in legalized pot may not work unless cops toughen-up on the black market.
NPR's Martin Kaste has that story.
UNIDENTIFIED MAN: Welcome to downtown Seattle. Welcome to Hempfest 2013, the largest free...
MARTIN KASTE, BYLINE: Ah, Hempfest. It's practically a Seattle institution. They hold it down by the waterfront and it's a celebration of all things cannabis. This year, the cops were at the gate but they were handing out bags of Doritos.
UNIDENTIFIED MAN #1: Thank you, young man.
UNIDENTIFIED MAN #2: Oh, you're welcome.
KASTE: The bags came with stickers warning people against smoking in public or driving high, as well as some other advice.
UNIDENTIFIED MAN #3: The do's and don'ts, one of the do's is: do listen to "The Dark Side of the Moon" at a reasonable level.
KASTE: The Doritos thing was great publicity. It attracted every media outlet in town, and it gave Seattle cops a chance to display their mellow attitude. But there is no doubt that things are different now. Since last Hempfest, it's become legal under state law for adults to carry up to one ounce of pot. Adults like Richard Kimball.
RICHARD KIMBALL: I just took a picture of me and a cop with a joint in my mouth.
KASTE: The thing is, there still isn't any legal way to get recreational marijuana. The state-licensed stores won't open until next year. But the police aren't asking questions about that. Sergeant Tony Bailey is operations chief for Hempfest.
SERGEANT TONY BAILEY: We don't really concern ourselves with how they got it.
KASTE: But maybe the cops should concern themselves with where the pot is coming from. That at least is the controversial argument made recently by Mark Kleiman. He's the UCLA professor hired by the state to help plan for legal pot. And he recently warned the Seattle City Council that it may become necessary for local cops to be a little less groovy.
MARK KLEIMAN: The illicit market is a paper tiger. But a paper tiger doesn't fall over until you push it. And I don't see anybody now ready to push.
KASTE: Kleiman thinks Washington State has an opportunity here to demonstrate to the world that you can undermine the black market with regulated pot. But he says that opportunity may be lost if people continue to feel safe buying from dealers on the street corner.
KLEIMAN: Or going to your untaxed, unregulated, not-really-legal-but-sort-of-kind-of-legal medical outlet. And it seems to be at some point that circle has to be squared.
KASTE: The mention of medical marijuana makes Kleiman's argument especially sensitive. Medical growers have become major suppliers to recreational users - it's sort of a grey market. People like Kleiman think that will have to stop if the new state-licensed stores are going to succeed. But any suggestion of a crackdown on medical pot triggers some strong reactions.
DOUG HIATT: It's just an idiotic idea.
KASTE: Doug Hiatt is an activist lawyer for medical marijuana producers.
HIATT: It's asinine. It's ridiculous to say that we should be putting resources into busting people and stuff, so that they can make their little state monopoly system work.
KASTE: On the other side of this is Alison Holcomb. She's the ACLU lawyer behind the initiative that legalized pot and she really wants to see the licensing system succeed. She doesn't think cities need to spend more on drug enforcement. But she would like to see local police make what she calls a political decision to push marijuana out of the shadows.
ALISON HOLCOMB: Washington State voters wanted to do something different. Now we have a legal system for meeting the demand for marijuana. You got to play by the rules. If you want to make money, growing and selling marijuana, great - get a license.
KASTE: Washington state's experiment starts in earnest next spring or early summer, when the first licensed stores are likely to open. Only then will it become clearer whether people will switch to government-licensed marijuana voluntarily or whether they need to be pushed.
Martin Kaste, NPR News, Seattle.