well criminals arent normally too intelligent. if they are stupid enough to make a tunnel by the border, they are stupid enough to get caught. just the idea of putting a tunnel by the border is ludicrous. look at all the security around the border. there is alot more people trying to stop the drugs and are against it than there is people that are for a tunnel going under the border. expecially after 911, the security is alot tighter and it makes it twice as hard. its not the thought of just weed that they care about. they could be transporting anything that the border would try to stop. possibly weapons or other drugs that are worse than weed (wait,is weed a drug?) even though its not very likely, its still possible. i dont know why you would try to sell large quantities of weed if the penalty is worse than the upside. by large amounts i mean like 200 lbs of weed.