欧洲日益增长的经济和政治一体化使得国家和超国家层面的决策过程日益交织在一起. 因为欧盟既不是一个国家,也不是一个联邦, 而是一种独特的组织, 国家特权向超国家一级的转移提出了一系列问题,例如:a)欧盟一级的决定如何影响国家一级的决定,反之亦然?; b) which theoretical approaches help us to grasp the ongoing process of integration?; c) what are the consequences of EU enlargement for both existing institutions as well as for democratic legitimization?