Early in his tenure at Princeton, Krugman joined the Group of Thirty (G30), an independent, international body of corporate, financial, and academic leaders who meet twice a year to discuss global economic and financial issues and the consequences of decisions made in the public and private sectors. In addition to the G30, Krugman is a Fellow of the Econometric Society and a Research Associate of the National Bureau of Economic Research. As one of the most well-respected economists in the world, he has served as a consultant to the Federal Reserve Bank of New York, the World Bank, the International Monetary Fund, and the United Nations as well as to several countries, including Portugal and the Philippines.