Thoughts on States’ Functions when applying International and Supranational Law In fashion, it is well-known that less can be more as Coco Channel stated. The same question arises in constitutional law nowadays with the continuous development of international and supranational law: in front of such a development, what a State can do, less or more, or more or less. Even though, the supremacy of international law and the primacy of European law put international and supranation