My 2 cents...

It seems that although pot is illegal currently there are so many times I've seen people get pulled in for it only to be released with no repurcusions...I truly believe not punishing for the offense even though it's against the law sets a double standard that causes problems...young kids can make tons of money and even if they get caught they'll be out by the next day with barely a slap on the wrist if even that...As far as I've learned it seems that only the offenders with the intent for violence are looked at as closely as possible as those are usually the ones with a much deeper involvement in the underworld

On a lighter note I'd have to say that the people in america are already fat and lazy so mj can't really make things much worse ;-)