Importing, buying, and selling of African elephant ivory is not allowed internationally. It cannot be imported into or exported out of the U.S. or practically any other country of the world. Legal to sell via an exemption allowing Eskimos to hunt whales and sell baleen crafts. Hippopotamus and Warthog Protected but not endangered. Once it has been imported into the U.S. no permit or documentation is necessary to buy or sell these ivories interstate.
Hippos are dangerous animals and a serious problem in many parts of Africa.
They account for more human deaths per year than crocodiles and poisonous snakes combined. Populations are frequently thinned out through government culling operations. The meat, hides and ivory are utilized. Warthogs are also very common and are hunted for food. Commerce in this 10,000-40,000 year old ivory is completely unrestricted.