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"): He was the first person appointed to the vice presidency under the terms of the 25th Amendment, and consequently the only person to have served as both Vice President and President of the United States without being elected to executive office.
Relevant evidence: No