Bro,
I think no one is replying 'cause this is asked often. I saw a post on this the other day and if I remember correctly someone said you're better off going somewhere else b/c the Thai authorities don't mess around and also the US customs might be difficult to deal with when coming from Thailand. Also I've heard that pretty much all you're looking at there would be the infamous Pink D-bols. Hope this helps...sorry no other replies...