During the Cuban Missile Crisis, he persuaded the President of Senegal, Léopold Sédar Senghor, to deny the Soviet Union landing rights to refuel its planes.
While he was Minister, he entertained Groucho Marx, Robert F. Kennedy, and Richard Nixon, among many other famous cultural and political figures.
Finally, during the administration of Jimmy Carter, Philip Kaiser served as ambassador to Hungary.
[6] While ambassador to Hungary, Philip Kaiser was instrumental in the return of the Crown of St. Stephen to the Hungarian government from the United States in 1978.
Of the four Democratic presidents Kaiser worked for, Truman was his favorite, because he was "the closest to a normal human being."