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Originally, the Grundgesetz related to the Rechtsstaat only in Art. 28 GG where it regulated that the constitutional order within the Bundesländer have to conform to the principles of the republican, democratic and social Rechtsstaat. A similar homogeneity rule points to the international level. The 1992 included Art. 23 Abs. 1 S. 1 GG regulates that, in order to support the realization of a European Union, the Federal Republic of Germany participates in the development of the European Union that is verpflichtet to democratic, rule of law, sozial and federal principles and the principle of subsidiarity and provides Human Rights protection equal to this Grundgesetz." Since 2000, Art. 16 II 2 of the Grundgesetz further allows, on the basis of a law, the extradition of a German citizen to a member state of the European Union or to an international Court as Court as long as the principles of the rule of law are preserved.
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