This work is divided into three chapters: in chapter 1 we refer to International Economic Law and political credibility; in chapter 2 we look at developing countries: the case of Mexico; and in chapter 3 we investigate the lack of economic equity in the International Monetary Fund and the World Bank. In Chapter 1 we analyze: International Economic Law; the New International Economic Order; Human Rights and political credibility; and the United Nations experts and their reports. In Chapter 2 we study: economic development and backward countries; foreign debt and eternal debt; privatization and Mexico; the 1994 North American Free Trade Agreement mistake; and the World Bank experts and their reports. Finally, in chapter 3 we investigate: the functioning of the international financial system; the fight against poverty; the effectiveness of the substantive reaction to criticism; and the experts of the International Monetary Fund and their reports.