Mary has always been upfront and honest about her flock, where her flock originated from and the feathering issue. Nothing was hidden here - ideas were shared by other breeders interested in preserving this landrace to try to solve the issue. In the end, Mary decided to cull her entire flock except for her original 2 birds, which was not an easy decision for her. The feathering issue has been discussed in detail here for over a year. Anyone that took the time to read the entire thread would see that.
You stated previously that your birds came to you via importation from Johanna and that your family in Iceland took care of all the importation paperwork. As Mary stated above, Johanna has never participated in legal importation from Iceland.
I have looked into the legal importation of hatching eggs (for another breed), and I do know the amount of paperwork and rough cost to do so. It's not an easy thing to do. There is no quarantine from eggs from Iceland because they are a Newcastle disease free country. But you still have to complete the importation paperwork, including coordinating a vet certificate indicating the health of the flock of origin which MUST be with the hatching eggs at all times, and pay the fees.
These requirements are for hatching eggs (live birds are a completely different ball game) for acceptance INTO the United States. I'm sure there are additional regulations from Iceland for exportation out of their country.