Excerpt: ‘the court affirmed in Kagama, like it has for nearly two centuries, that Indian country sat apart from states and was instead subject to congressional and federal authority. Put simply, states had no business in tribal affairs. That decision and others like it – however imperfect and drenched in conquest they were – supposedly shielded Native people and their reservations from the arbitrary authority of states and hostile white settlers. Last month, the supreme court tore up that decision and centuries of legal precedent with it‘.