" Just as the Five Tribes and others were formalizing their tribal governments and running their own programs, legal aid groups were helping nonrecognized tribes do the same: the two were on a collision course. One result was the Federal Acknowledgment Process, establsiehd within the BIA in 1978. Its rigorous criteria and evaluation process reflected the desires of the Five Tribes and many other reservation tribes to have a stringent regimen, on that protected their rights, economic resources, and overall ability to define ‘Indians” and “tribes.” Throughout these debates pulsed questions of “authenticity” and being “real” or “bona fide” Indians and tribes. While academics and unrecognized tribes questioned the ability of any party to accurately define “Indian” and “tribe,” as a practical political and cultural matter tribes and their federal allies groped toward a way to measure and define these highly problematic terms. By 1978 leaders of federally recognized tribes felt they had found the answer in the new Federal Acknowledgment Process, with many unrecognized groups agreeing that finally a way had been found to determine what group were “real” tribes. "
― , Claiming Tribal Identity: The Five Tribes and the Politics of Federal Acknowledgment