 It can also call a referendum on the removal of the president from office or bring the president before the Constitutional Court if it concludes that the president violated the constitution, and is ultimately responsible for declaring war.Following the accession to the European Union, Austria's parliament had to cede some of its power to European Union institutions.A convention, the Austrian Convention ("Österreich Konvent"), was established in 2003 to develop proposals for a reform of the Austrian constitution and central government institutions.