The presidency of Gerald Ford began on August 9, 1974, when Gerald Ford became President of the United States upon the resignation of Richard Nixon from office, and ended on January 20, 1977, a period of 895 days. Ford, a Republican from Michigan, had served as Vice President of the United States since December 6, 1973, following Spiro Agnew's resignation from that office. Historian John Robert Greene writes that 'Ford had difficulty navigating a demanding political environment.' He also notes, however, that 'Americans, by and large, believed that Gerald Ford was an innately decent and good man and that he would (and did) bring honor to the White House. Although this sentiment proved too little to bring Ford to victory in 1976, it is an assessment that most Americans and scholars still find valid in the years after his presidency.'