Please answer the following question: John Newton Mitchell (September 15 1913 November 9 1988) was the Attorney General of the United States from 1969 to 1972 under President Richard Nixon. Prior to that he was a noted New York municipal bond lawyer director of Nixon's 1968 presidential campaign and one of Nixon's closest personal friends; after his tenure as Attorney General he served as director of Nixon's 1972 presidential campaign. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder