The U.N. Convention Against Torture. The Convention on the Elimination of All Forms of Discrimination Against Women. The International Covenant on Civil and Political Rights. The International Covenant on Economic, Social and Cultural Rights. Each of those treaties and many more aim to prevent human rights violations. What University of Chicago Law School professor Eric A. Posner wants to know is: Why don’t they work? Posner, the son of 7th U.S. Circuit Court of Appeals Judge Richard A. Posner, examines in his …