Peter,
I may be able to help. I am doing it now! Tell me where you are located, city and state. The farmed clams from the Marshall Islands are imported and people (companys) have territories that are protected by the company in the Marshall Islands. This means for example if you live in LA that area is aready taken you will not be able to import from them. One you will need your import license from the US Customs, two you will need a wholesale permit and for this you need a business, three you will have to deal with US Fish and Wildlife Department (which there are only 12 locations in the US at airports.) And much .much more!
But I would be glad to help!
Jim