Since the famous Bosman ruling by the European Court of Justice in 1995 transfer fees for football players after moving to another club have become suspect as they are considered as an obstacle to the free movement of workers. However, in an unrestricted market free migration from football...

In the standard setting a system of tradable permits is effective and cost-efficient in attaining the policy objective of pollution reduction. This outcome is challenged in case of a tradable permit system in a federal system/constitution with individual states having discretionary power...