FindLaw provides U.S. law cases and codes at the federal and state level. It also provides laws and legal issues by topic. "U.S. Laws: Cases and Code" provides Supreme Court opinions as well as U.S. Court of Appeals Cases.
International Business (Business Reference & Services Section, "BRASS," of the Reference & User Services Association of the American Library Association). A comprehensive list of websites.
International Constitutional Law (University of Hamburg): Includes text of each constitution, as well as background material, commentary, and a key numbering system that enables comparison of different constitutions.
JuriGlobe World Legal Systems Research Group Produced by the University of Ottawa. Furnishes legal systems classification, geographic distribution, U.N. member status, demographic distribution, world GDP and GNI per capita distribution, International Trade and Legal Integration, languages and legal systems.
Thomas-Legislative Information: Provided by the U.S. Congress, this site furnishes updated information about treaties the Senate is considering for adoption.
Transparency International provides corruption measurement tools: Corruption Perceptions Index, Bribe Payers Index, Global Corruption Barometer, Global Corruption Report.
United Nations Includes UN at a glance, structure and organization, and member states. Sections include Information Centers, International Court of Justice, Global Compact, Partnerships, and Rule of Law.