[111] Datu Rusman Sinsuat – Epsilon Sigma ( Philippines ) – Provicial Board Member, Maguindanao (2001 - present) [99] Adlai Stevenson – Zeta Sigma – Democratic Nominee for President of the United States (1952, 1956); United States Ambassador to the United Nations (1961-1965). [110] Harry S. Truman – Alpha Mu –