ECJ direct tax cases and domestic constitutional principles: an overview / Claudio Sacchetto -- Double taxation and EC law / Michael Lang -- Nondiscrimination from the perspective of the OECD model and the EC treaty: structural and conceptual issues / Kees van Raad -- The US Supreme Court's...

Introduction / Reuven S. Avi-Yonah & Michael Lang -- European constitutional intergration : the case of direct taxation / Gianluigi Bizioli & Claudio Sacheto -- There is life in the old dog yet : horizontal comparability and the establishment of the internal market / Michael Lang --...

From posting photos and videos to tracking physical activity, apps can do almost anything, but while they may seem like harmless fun, they may also pose a threat to personal data and national security. This paper compares the different responses of the United States, Canada and Germany to data...