What explains the variation in the levels of participatory authority enjoyed by indigenous groups in international natural resource management institutions, and through what processes have these groups attained their positions? This study examines how institutional rules are arrayed in such a way as to shape the relative levels of indigenous participation among six cases dealing with international fisheries management. These include American and Canadian indigenous collectivities in the Pacific Salmon Commission (PSC) and the International Pacific Halibut Commission (IPHC), and two individual cases of non-participation in the PSC, the Colville and Nisga'a, where participation might otherwise be expected. The processes by which these [...]