First, before the Netherlands spouts it's mouth out, maybe we should look at it's heroin usage. Also, the pot brought in is often asian along with the opiates. Alot of pot smoked in the USA is still commercial Mexican and Columbian. I'm not an expert on pot, I lost my taste for it generally, all it does is make me incredibly paranoid, for good reason. The good old days, some idiot cop wouldn't even know how to smell it. Now, most are on a mission from God. There isn't a substance easier to detect or easier to smell. It's not worth the hassle with random workplace tests either. You could be coked up and drunk friday night, on monday, your clean, not so with Pot.
SuperPot has existed for a long time, but strains from Asia have been transplanted in South America and Canada now.
Probably the funniest thing is that on "That 70's Show" Red can always tell when they have taken some beer or driven the Corvette, but they all sit around in a circle and never get caught smoking pot in the basement in a fog.