The Association of Southeast Asian Nations (ASEAN) is changing since its members have committed themselves to the establishment of a single market and production base by 2015. ASEAN’s Economic Community (AEC) requires its member states to adapt parts of their economic, ¿nancial and legal frameworks to common rules and standards. Whether or not the association can live up to its new ambitions, however, is disputed. Despite the great enthusiasm with which the AEC was proclaimed in 2009, progress toward a single market and production base is falling behind schedule. In particular, the question arises if ASEAN can cope with enforcement problems. Many important projects are not implemented fully, on time or at all. A common explanation for this failure is the absence of appropriate institutions at the regional level (Caballero-Anthony 2008, Stahl 2010). Much less attention has been given to the ways in which member states cope with regional commitments.