The main problem with Hawaiian sovereignty is that they make up at most 10% of the population. What are you going to do, kick out the other 90% who do not support this? My family has been there since 1837, but we have no Hawaiian blood. It is our home, we have no other, but we are also 100% Yank as are most people there. The independence group is most definitely just a fringe population who happen to be quite vocal. I understand their frustration, but they are about 100 years too late with this issue. Hawaii is an American State period.
I hope you see Chechnya with the same consistency in reasoning. Other interesting implications are redemption measures for native populations and other "issues" back in time... American native nations, Jewish property confiscations, nationalizations... damages due to history of systemic bias. Things are not exactly simply clear-cut "black and white"...