This course will examine the customary international law of investor protection, as well treaty law as reflected in regional trade agreements such as NAFTA and bilateral investment treaties (BITs), with a particular focus on those BITs to which the US is a party. Procedures for investor state dispute settlement under arbitral facilities such as ICSID, and the resulting case law, will be examined in depth. We will also address the environmental and social issues surrounding international legal protection of foreign investment, proposals for a multilateral investment agreement, and the question of international legal responsibilities for multinational corporations (codes of conduct, the Global Compact, etc.).