 In its 30 June 2009 decision the Court stated that while the treaty was compatible with the Basic Law, an accompanying German statute, relating to powers of the German Parliament to supervise how the German government votes at Union level, granted insufficient powers to the German Parliament.Ratification of the treaty would require the stronger oversight powers.The 147 page-long ruling focuses on the structure of the European Union according to the Lisbon Treaty and its relationship with the Basic Law.