of state. >> montgomery: on this day, cohen's making a delivery to one of his customers near oakland. >> hey, nate. hey, how's it going, nate? >> hi. hi. >> i'm matt. >> montgomery: in the end, it's a fairly routine transaction for cohen and his staff. the price, the letter from the customer's doctor-- it's all be worked out by phone and internet. but it's also been an obstacle course of local, state and federal laws. >> the problem is that the medical marijuana program act was the result of a committee of a lot of people putting it together, and it doesn't make a lot of sense. there's a lot of internal inconsistency in the medical marijuana program act which leaves it open for very wide interpretation. >> california's ballot measure to legalize marijuana... >> montgomery: it was with an eye to settling these inconsistencies that pro-pot advocates around the state had made a big push for a new marijuana law last fall. >> make california the first green state. we've got the blue states and the red states... >> montgomery: in oakland, they gathered on election night to watch the results of the state ballot measure, proposition 19, that would have fu