1949 and renamed the West German Bundesministerium der Finanzen. Since 1999, the Detlev-Rohwedder-Haus (former Air Ministry Building) in Berlin has been the headquarters of the ministry. During the period of Reunification in the 1990s', the Ministry of Finance headed by Theo Waigel, refused to return eight buildings in East Germany belonging to six Austrian Jewish citizens / NS victims. Allgemeine Judische Wochenzeitung; 10 September 1992; "Expropriation through the back door; German Government adds to its coffers / Loopholes in German bureaucracy make Injustice permanent." ("Enteignung durch die Hintertur; Der Bund bereichert sich / Winkelzuge deutscher Burocratie schreiben Unrecht fest"). Structure and function The Ministry is the supreme federal authority in revenue administration and governs a number of subordinate federal, intermediate, and local authorities such as the Federal Centre for Data Processing and Information Technology (ZIVIT). The Ministry's wider portfolio includes public-law agencies and corporations such as the Federal Finance Regulator (BaFin) and Real Estate regulatory bodies. The finance minister is the only cabinet minister who can veto a decision of the government if it would lead to additional expenditure. The German newspaper FAZ stated, the Ministry of Finance is the most important Ministry in the German government. The Finance Ministry is responsible for all aspects of tax and revenue policy in Germany and plays a significant role in European Union policy. It has nine directorates-general: Directorate-General Z (Central Services): Deals with all ministerial organizational matters, including human resources, IT, occupational training, management, and administration Directorate-General L (Leading, Strategy and communication): Coordinates strategy development and policy planning to advance decision-making processes, also manages the ministry's relations with the parliament and federal cabinet Directorate-General I (Fiscal and Macroeconomic Affairs): Determines the strategic focus of the Ministry's fiscal policy instruments, forecasts public budget trends and conducts macroeconomic research Directorate-General II (Federal Budget): Responsible for drawing up the federal budget by calculating revenue and spending for each government policy area. Directorate-General III (Customs and Excise): Responsible for levying customs and excise duties, as well as for monitoring cross-border goods traffic. Directorate-General IV (Taxation): Together with the other member states of the EU, the Ministry works to improve coordination among the different systems of taxes. Directorate-General V (Financial Relations and Law): Coordinates financial relations between central, regional and local governments. Also responsible for public law, legal affairs, and handling proceedings before Germany's Federal Constitutional Court and the European courts. Furthermore, this directorate-general deals with settlement