I would hope that the world (including Alaska!) would be much more interested in banning sport hunting, rather than looking at banning ivory from subsistence hunting.  It has always been a wonder to me, considering how the Lower 48 hunted to near extinction, every wild animal people could lay their hands on, and yet Alaska doesn't seem to get it (they've missed lessons from the Lower 48 in many areas.)  As long as the Native people are using the whole animal and the animal population doesn't dip too low, Alaska Native ivory sales should stay legal.  Sport hunting...that's another story, but it will never change, because there is too much money (and stupidity) involved, or until they are all gone, or the state/government are finally forced to put them on 'endangered' lists.  We are our own worst enemies.