1. the German Basic Law was amended in 1994 by the Gesetz zur �nderung des Grundgesetzes, BGBl. I 3146 and now reads that the Bund shall have the powers to legislate in areas of concurrent competences "if and to the extent that the establishment of equivalent living conditions throughout the federal territory or the maintenance of legal or economic unity renders federal regulation necessary in the national interest;The text of Article
2. But see Konrad Hesse, Der unitarische Bundesstaat (C.F.M�ller 1962) (emphasizing how German federalism veered toward a unitary regime;See Josef Isensee;Subsidiarit�tsprinzip und Verfassungsrecht,2001
3. The United States and the European Union: Models for their Epochs;Daniel Elazar;The Federal Vision,2001