UHURU! FREEDOM FROM WHITE RULE. AFRICAN FOR AFRICANS. AFRICA FOR BLACK PEOPLE!
Negro is a term associated with SLAVES. He wasn't going to tolerate being called a NEGRO! He was going to become an important man in a new government upon Independence, there's no way he would allow himself to be categorized with such a derogatory term.
Sorry, but this is speculation, and it's irrelevant speculation because we already have evidence that Barack Sr. did not self-identify his race as African on other documents.