[Hemingway's Ghost]

Ok, how about this. Pot is illegal unless you buy a license to use it. To get a license for personal use only, you pay 30,000 a year. That way only the high achievers can get it and the pot heads won't get it legally.

How about a $50K/year alcohol use license instead?

[Samurai_Jack]

Legalize it... Regulate it, Sell it along with alcohol and then Tax the hell out of it. Put that money into rehab clinics.

and then prosecute the dealers

NOW you have solved the problem.

Prohibition was a failure then and it's a failure now.