According to Alaina Roberts of the University of Pittsburgh, Native American nations “have always had this fear, and a valid fear, that when they accept black people as part of their tribe they are seen as not ‘Indian first’.”
Caleb Gayle, “The black Americans suing to reclaim their Native American identity,” The Guardian, November 2, 2018. https://www.theguardian.com/us-news/2018/nov/02/black-americans-native-creek-nation.