The union has legal supremacy over its member states only to the extent that its member state governments have conferred competences on the union. It is up to the individual governments to assure that they have full democratic backing in each of the member states. The citizens of the member states, though retaining their nationality and national citizenship, additionally become citizens of the union, as is the case with the European Union. The European Union, the only clear example of a supranational union, has a parliament with legislative oversight, elected by its citizens. To this extent, a supranational union like the European Union has characteristics that are not entirely dissimilar to the characteristics of a federal state like the United States of America. However, the differences in scale become apparent if one compares the United States federal budget with the budget of the European Union (which amounts only to about one percent of combined GDP) or the size of the federal civil service of the United States with the Civil Service of the European Union. Supranationalism in the European Union Historically the concept was introduced and made a concrete reality by Robert Schuman when the French Government agreed to the principle in the Schuman Declaration and accepted the Schuman Plan confined to specific sectors of vital interest of peace and war. Thus commenced the European Community system beginning with the European Coal and Steel Community. The six founder States (France, Italy, West Germany, the Netherlands, Belgium, Luxembourg) agreed on the goal: making "war not only unthinkable but materially impossible". They agreed about the means: putting the vital interests, namely coal and steel production, under a common High Authority, subject to common democratic and legal institutions. They agreed on the European rule of law and a new democratic procedure. The five institutions (besides the High Authority) were a Consultative Committee (a chamber representing civil society interests of enterprises, workers and consumers), a parliament, and a Council of government ministers. A Court of Justice would decide disputes coming from governments, public or private enterprises, consumer groups, any other group interests or even an individual. A complaint could be lodged in a local tribunal or national courts, where appropriate. Member states have yet to fulfil and develop the articles in the Paris and Rome treaties for full democracy in the European Parliament and other institutions such as the Economic and Social Committee and