Modern globalization was brought about during the 1970s with the development of digital information processing. While Governments around the world have a duty to protect their citizens and visitors, they often need to share personal information for purposes of security, law enforcement and the issuance of benefits to their citizens. When personal data is shared across national boundaries, what laws apply? To resolve uncertainties, governments enter into information sharing agreements. The U.S. Government is party to dozens of government-to-government (G2G) information sharing agreements on a spectrum of topics including taxes, pension payments, securities enforcement, airline passenger data, lost or stolen travel documents, and law enforcement. This essential reference is your guide to these government-to-government sharing arrangements to date. This book examines those agreements as a way of establishing how practice has evolved. In addition, the book reviews past agreements, and the international privacy principals of OECD and APEC for their relevance to Government to Government sharing. This is an essential reference for lawyers, privacy professionals, or any individuals who wish to understand U.S. practice for sharing personal information.