; and (6) by adding at the end the following: (4) Special Rules (A) Interstate Commerce Only authentic native articles of handicrafts and clothing may be sold in interstate commerce. (B) Edible portions of marine mammals Any edible portion of a marine mammal may be sold in a native village or town in Alaska or for native consumption. (5) Prohibitions (A) Walrus ivory or whale bone No State shall prohibit the importation, sale, offer for sale, transfer, trade, barter, possession or possession with the intent to sell, transfer, trade, or barter of walrus ivory or whale bone produced under this title by an Indian, Aleut, or Eskimo as an authentic native article of handicrafts and clothing. (B) Mammoth ivory No State shall prohibit the importation, sale, offer for sale, transfer, trade, possession or possession with the intent to sell, transfer, trade, or barter of mammoth ivory or a mammoth ivory product. .