What if Tatanka Iyotake aka Sitting Bull lived to 1931? How would he be viewed by the American Public in the wake of the 50th anniversary of Little Big Horn 1916 and beyond ?
A minor celebrity. Americans have always been willing to give a little fame and applause to people they've defeated, if they've accepted their defeat. And by that time the American public is decades in to romanticizing the American Indian.
I could see that happening.
Maybe if he stayed in Canada? In which case the US might almost ignore him...