Elephant and rhino ivory trade is nothing like ivory utilized from walrus.  Poachers are killing off African animals at alarming and non-sustainable rates, cutting out the ivory and leaving the meat unharvested. 

Walrus have been "managed" for thousands of years by indigenous people.  Exceptions were the Russians who depleted the sea otter and walrus in SE and SW Alaska purely for profit, not for a food source.

Alaskan Natives use walrus as a principal food source and the walrus ivory for carving and generating a small amount of income.  In years past they designed tools, clothing, hunting harpoon and arrow heads all from ivory. Whale bones were used as frames for early homes covered with walrus skins. Survival then, survival now. 

These bans on Alaskan walrus ivory need to be aggressively engaged and overturned.