United States - bribery champions. - With 128 cases of corruption noted, the United States was the country most often involved in bribery cases, according to the Organisation for Economic Cooperation and Development (OECD). In a report on the costs of international corruption, it looked at 427 cases over the last 15 years throughout the world, involving individuals or businesses in 41 countries which have signed the OECD anti-corruption convention. On average, backhanders represented 10.9%...