This volume offers a comparative introduction to the most important aspects of administrative law in various EU Member States (France, Germany, the Netherlands, the UK), at the level of the European Union, and in the United States. It contributes to the 'transboundary' understanding of different regimes related to actions and decisions of the administration. Now in its third edition, the book is designed for use in education, in research, and in legal practice, and the contributions are all based on one and the same format, thus making it more accessible for its readers. The main items of the format are: 1) What is administrative law? 2) Who is administrating? 3) Which instruments are available for the administration? 4) Which (formal) rules/principles (written or unwritten) govern administrative actions? 5) Access to (administrative) courts against administrative actions/decisions. 6) Enforcement by the administration. 7) Financial liability of the administration for (un)lawful actions. 8) Recent and future developments and conclusions. The final chapter offers comparative remarks by the editor, Rene J.G.H. Seerden. (Series: Ius Commune Europaeum - Vol. 109)