Abstract: | The history of the EU is characterised by rapid and complex institutional development. This leaves European Affairs Committees (EACs) in national parliaments with a moving target problem in their endeavours to control the government's EU policies. This paper investigates how EACs react to this challenge. Building on the rational delegation literature, it is argued that EACs are likely to adapt control instruments in tandem with institutional changes at the supranational level. Using McCubbins and Schwartz (1984, American Journal of Political Science, 28, 165–179), it is further argued that EACs are likely to want to impose both police patrol and fire alarm control on the government. These arguments are investigated in the case of Denmark during the 50-year period since the first Danish application for EU membership in 1961, and considerable support is found for the authors' hypotheses. |