Question: Robert L. DuPont, is a national leader in marijuana policy, drug policy and treatment, he was second White House Drug Czar from 1973 to 1977 under former Presidents Richard Nixon and which American politician who served as the 38th President of the United States from August 1974 to January 1977?
Sentence (from "Gerald Ford"): Prior to this he served eight months as the 40th Vice President of the United States, following the resignation of Spiro Agnew.
Relevant evidence: No