Cook County Commissioner Stanley Moore said Monday that before a vote can be taken on whether the county should change Columbus Day to Indigenous Peoples’ Day, major tribes in the U.S. should “acknowledge their role in the rich history of Black slaves.”

Moore, who said he is a direct descendant of a Choctaw Freedman, said tribes have unfairly denied descendants full tribal membership — and are excluding them from such benefits as education and housing assistance and casino profits.