The situation seems very different in Wisconsin...according to Hsu's website for internation shipping...
english.hsuginseng.com/content/content.a...;contentid=102183127
Exports of wild American ginseng
To ship or take Wild American Ginseng overseas, it is recommended that you apply for a CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora). Even with a CITES included, the foreign duty and taxes are the customer's responsibility. YOU WILL BE RESPONSIBLE IF GINSENG IS SENT WITHOUT PROPER DOCUMENTATION!!
How to apply for a CITES?
Hsu's can apply for a CITES for you for $50. The application process takes about 7~14 days. This fee will be charged once the documents are ready. Just write \"CITES\" on the customer's note column at checkout before submitting your order if you would like us to apply one. Your package will be sent with all necessary CITES documents.