25. Gerald R. Ford Jr.
Gerald Ford became the 38th president of the United States after Richard Nixon resigned from office. His presidential tenure lasted from 1974 until 1977. He is remembered for taking part in the Helsinki Accords, which attempted to thaw relations with the Soviet Union during the Cold War and also notably pardoned former president Richard Nixon. A native of Grand Rapids, Michigan, his law career propelled him into political life. Overall, he ranks high for his moral authority as he led the country through a serious economic depression. Gerald Ford holds the title of being the only man to serve as both president and vice president without being elected.