there is no risk imo by ordering seeds from without side of the us, and actually, to think about it, i'd say your even safer ordering seeds not from within the us.. the worst thing that you have to worry about is customs, if you could order from within the us i would be worried about a lot more than that..
i've had one order out of probably like 100 get caught by customs.. all they do is send you a lovely letter saying that someone tried to mail you some form of contraband, and that if you'd like it back, you can come on down to their office and pick it up which i'd not suggest doing, lol..