David Mark @DavidMarkDC
Lyndon Johnson, Sept. 16, 1964 — Vancouver, Canada John F. Kennedy, May 16-18, 1961 — Ottawa, Canada Dwight D. Eisenhower, Oct. 19, 1953 — Nueva Ciudad Guerrero, Mexico Harry Truman, July 16-Aug. 2, 1945 — Potsdam, Germany 4/5 — PolitiTweet.org