Original sentence: However, some critics claim that his Native American origins are fabricated and have produced some evidence they claim contradict his stated ancestry.I have never claimed to be goddamned Sitting Bull".Many Native American tribes require someone to be of at least one quarter tribe ancestry to join.Others point out ethnicity is not generally a requirement to be a professor of a certain department and there are many ethnic studies professors that do not have the corresponding ethnicity.The Keetoowah Band does not recognize associate members as members of the Keetoowah band; their requirements specifically state "a person must be 1/4 degree of Cherokee Indian ancestry or above to be a member of the United Keetoowah Band" , a qualification which Churchill does not meet.To date no one has specifically accused Ward Churchill of lying about his ancestry
Edited sentence: However, critics claim that his Native American origins are fabricated, and have produced some evidence that appears to contradict his claims.I have never claimed to be goddamned Sitting Bull.The Keetoowah Band does not recognize associate members as members of the Keetoowah band; their requirements read: "a person must be 1/4 degree of Cherokee Indian ancestry or above to be a member of the United Keetoowah Band," , a qualification which Churchill does not meet