They may have had one or other affiliation at earlier stages in their careers but the key attribute for most presidents is a leaning towards the president's own political philosophy. (newlawjournal.co.uk)
Among other affiliations, he is on the Stewardship Board of the World Economic Forum System Initiative on Shaping the Future of Mobility. (opp.today)
Among many other affiliations, he was a member of the Australian Academy of Science and of the Wentworth Group of Concerned Scientists, which reported on Australian environmental issues. (britannica.com)