I hope that arguing that drug laws are unconstitutional isn't off topic.
What do you mean, why? Isn't the argument crystal clear based on the constitutional amendment that was required for alcohol prohibition?
“The egg hatched...” “...the egg hatched... and a hundred baby spiders came out...”
“Who are you?” “A friend. I'm here to prevent you from making a mistake.” “You have no idea what I'm doing here, friend.” “In specific terms, no, but I swore an oath to protect the world...”
“It's a goal you won't understand until later. Your job is to make sure he doesn't achieve the goal.”