Marijuana > Corn
Guess what the number one cash crop in the US is? I'll give you a hint - it's not corn.
Now, given that America's pot is worth $35 billion annually, does it really make sense to continue spending billions of dollars trying to keep it illegal? Of course it doesn't. That's a $35 billion industry driven underground, so that the only people who can make a worthwhile profit off of it are crime lords. Essentially, decent people are sent to jail every year so that the heads of the criminal underworld can grow rich from an industry that is theirs by way of a government-manded monopoly. This isn't just an injustice, and it's not just a waste of money - it's insane. Utterly batshit one-flew-over-the-cuckoo's-nest insane.