While the bicameral Parliament and the Government constitute the legislative and executive branches, respectively, the courts are the third branch of Austrian state powers. The Constitutional Court (''Verfassungsgerichtshof'') exerts considerable influence on the political system because of its power to invalidate legislation and ordinances that are not in compliance with the constitution. Since 1995, the European Court of Justice may overrule Austrian decisions in all matters defined in laws of the European Union. Austria also implements the decisions of the European Court of Human Rights, since the European Convention on Human Rights is part of the Austrian constitution.