This is a report of the explicit interpretation of the Dutch Aliens Act using the Calculemus method and the FLINT language. The method has been used before to make normative interpretations of regulations that form the basis for specific services to be delivered by governmental agencies and of legal cases. In this paper, the authors make an interpretation of an entire act, the Aliens Act. We give an overview of methodical choices that enable the analyses of extensive sources of norms, and report on the results of the analysis.