International Advertising Association - US Chapter | 519 followers on LinkedIn. The US Chapter of International Advertising Association (IAA), was founded in 1959 (IAA Global Headquarters was founded in 1938) to champion responsible marketing. The IAA, with 50 chapters around the world, is a one-of-a-kind global partnership whose members comprise of advertisers, media, agencies, public relations agencies, and academics. The IAA is a platform for industry issues and is dedicated to protecting and advancing freedom of commercial speech, responsible advertising, consumer choice, and the education of marketing professionals.