If what they are doing is continuing the process of decimating the wildlife population, then yeah they should be asked to give it up. I hear what you are saying, it's not straightforward and this is just another grevience in a long list of justified greviences Native Americans have, but if what they are doing is taking away the rights of others, then it shouldn't be allowed. The Suquamish also have rights, and if what other tribes are doing is interfering with those rights, then shouldn't the next higher authority (the state) have the obligation to step in?