Technically, hatching eggs need all the same import permits as live birds. But, if you went to Sweden and were hand carrying them back there is a chance they would get through.. Having a letter from a Swedish veterinarian in case anyone questions them would be good. Having an import permit...
Start with U.S. Fish and Wildlife Service and U.S.. Department of Agriculture regulations. Both will be involved in the permitting and they both have information on-line. You will also need a customs broker and veterinarian to consumate the deal when the time comes. You might as well get a...