I think you have missed the point Missy (not sure if that is what you are).
If your husband is indeed a member of an IFALPA organisation, his membership will be revoked and he will not be allowed to join another one again, or at least for a while according to ironbutt.
So go ahead, join CX. Have a ball in Hong Kong!
I think you will notice that nobody has answered your request for information yet. Does that tell you anything?