You don’t have to smuggle it. It’s not listed, or “scheduled” in the USA, so you can go to a lab and order 10 kilos of it, have it shipped to a state that has not made it illegal. As long as all the documentation says “research chemical” and “not for human consumption”, there is not much the cops can do.
You used to be able to do this with 5-methoxy diisopropyltryptamine (Foxy Methoxy) but it got put on the list. Up until that point, you could order it online.
The Bath Salts people have been aggressively marketing it, and their little packets make distribution easy. Eventually it will be Emergency Scheduled then permanently scheduled, then it will be as hard to get as marijuana or heroin.
I think people who think marijuana should be as hard to get as heroin are on bath salts.