In addition to former Pi Gamma Mu presidents Charles Abram Ellwood, S. Howard Patterson and W. Leon Godshall, prominent members of the society include former U.S. president Lyndon B. Johnson, 1956 Nobel Prize winner and former Canadian prime minister Lester B. Pearson, former Philippine presidents José P. Laurel and Ferdinand Marcos, Panama Canal Treaty negotiator and former Panama president Ricardo Joaquín Alfaro Jované, leading anthropologist Margaret Mead, sociologist Pitirim Sorokin (Pi Gamma Mu national vice-president, 1937–1941) who founded Harvard University's sociology department, Edward A. Ross, a major figure in early criminology, Ernst Philip Boas, famous cardiologist and inventor of the cardiotachometer and original proponent of national health insurance, Jane Addams,1931 Nobel Prize winner and pioneer community worker, MIT economist Charles P. Kindleberger, architect of the Marshall Plan, incumbent US Senator Chuck Grassley of Iowa, incumbent Colorado Congresswoman Diana DeGette, deputy whip of the U.S. House of Representatives, groundbreaking experimental psychologist and incumbent Rockefeller Foundation president Judith Rodin - the first female president of an Ivy League university (University of Pennsylvania), incumbent commissioner of the Federal Communications Commission Michael Copps, incumbent Philippine Senators Edgardo Angara, Miriam Defensor Santiago and Juan Ponce Enrile, internationally recognized constitutionalist Henry J. Abraham, incumbent North Carolina Supreme Court senior justice Mark Martin, prominent California lawyer and former U.S. Attorney General William French Smith, banker, U.S. Secretary of the Treasury and Ambassador to NATO David M. Kennedy, 1971 Economics Nobel