After receiving a direct challenge from President Donald Trump to prove her Native American ancestry by submitting to a DNA test, Senator Elizabeth Warren released her results Monday morning. As an enrolled member of the Diné (Navajo) Nation, I obviously have some thoughts on this development. As a geneticist-bioethicist, I have even more. Whether or not Warren has genetic ties to indigenous peoples, she is not Native American, and her public gambit could dangerously obscure that distinction.