There is some precedent that is related. A certain percentage of DOD contracts are required to go to Native American owned business. To qualify as native the business must be 51% owned by member(s) of a federally recognized tribe. Each tribe gets to decide who is or is not a member, most do it by voting or birthright systems.
Interestingly, for some other set asides they use "Historically black colleges and universities (HBCUs)" as the qualifier. Membership is regulated by who gets in to those colleges. Thus they use college admissions boards instead of birthright or popular vote.
Interestingly, for some other set asides they use "Historically black colleges and universities (HBCUs)" as the qualifier. Membership is regulated by who gets in to those colleges. Thus they use college admissions boards instead of birthright or popular vote.
https://business.defense.gov/Portals/57/Documents/DFAR%20252...