Kevin Sabet addressed the Oregon Senate and House Interim Judiciary Committee on Friday.
He warned lawmakers not to be fooled about what's happening in Colorado and Washignton State that just legalized marijuana.
"I think a lot of people think legalization is the otherwise repsonsible 50 year old guy who smokes pot at the end of the week. That's not what it's about. What legalizing does is the introduction of commercial sales."
The Oregon Association of Chiefs of Police invited Sabet to speak to lawmakers.
Oregon voters are expected to vote on legalizing marijuana in November.