Alexandria, VA, 2013-05-08 — /travelprnews.com/ — The Global Business Travel Association (GBTA)—the voice of the global business travel industry—today announced that former U.S. Secretary of State Hillary Rodham Clinton will deliver the Wednesday General Session keynote at the GBTA Convention 2013.   The GBTA Convention 2013 will be held August 4-7, 2013, in San Diego, CA. “Hailed as… Read the full press release