Deb Robson has a very important posting about shipping wool here: Shipping wool internationally
I get quite a lot of wool from other countries. Usually the senders knows what is OK to ship and what is not, and so far they have always asked me what kind of wool I want to work with. I'm very thankful for that. But on Ravelry I have seen many opinions on following these rules, among them opinions that scare me.
So please read and think about it for a while!