MADRID | By Luis Martí | Each time the monetary union takes a step forward, German individuals and/or civil or political groups file a case with the Constitutional Court in Karlsruhe. So far, the Court has sanctioned that German governments were correct in accepting obligations emanating from Maastricht or the Lisbon Treaty, for example, but at the same time, it has also turned the screw on the Berlin executive by setting more and more strict limits to their freedom of action, by requiring –for instance- higher levels of co-decision with the legislative organs.