I think we need to attack it from a fiscal angle. How much resources does the government use on anti-marijuana campaigns and imprisonment of minor marijuana crimes? When thinking of resources you have to think of police, courts, housing the prisoner, feeding him, giving him medical rights.. etc etc.. there is alot of money that goes into that.

Secondly bring up the number of nonviolent marijuana related crimes compared to violent marijuana related crimes.

Third, site prohibition crime and how crime dropped significantly once alcohol was legalized.

Fourth present marijuana as a business proposal... show the government how much money they stand to make. If it becomes a moral issue then allow them to require a license which limits people to a certain quantity per week/month (keep this seperate from MMJ laws which would be much more lax), which you have to pay for in addition to paying taxes on store bought marijuana or on your home grow yearly tax. The numbers have to be astronomical just from confirmed smokers.. imagine what it would be like once closet smokers come out of the wood works.

Politicians love money... If you show them how it would save money in addition to add recurring revenues to the government I bet they would be more inclined to listen. The problem is that no one ever makes it far enough to get heard by the senate it seems.