If the “Native Americans” or Sibero-Americans, wisely refuse to let their DNA be taken it may be hard to develop a data base that allows the determinations.
You are right. The pure Cherokee or Chickasaw only want those who are on their rolls to be part of the tribe, and not some loser who was 1/2 and never signed up to be part of the tribe. So they go by official rolls only, and not DNA, and keep their DNA from being collected. I understand it, but it hurts those of us who only want to know the specific amount, not trying to get a government handout. Warren was tyring to get a job out of it, to the detriment of real Indians.