Does an EU Treaty take precedence over a Directive?

Primary sources

The 'primary' sources of EU law are the EU founding Treaties, such as the Treaty on the Functioning of the European Union (TFEU) and the Treaty on European Union (TEU), which set out EU competencies and provide the basis for actions taken by the EU institutions. They set out EU objectives, rules and provisions governing decision making by EU institutions and the relationship between the EU and its Member States. The EU can only act within the limits of the competences conferred on it by Treaty (see the principles of conferral below). In that sense, the EU Treaties have primacy. Amendments to the Treaties may be made to allow for efficiency, transparency, enlargement and co-operation (see: Amendment and ratification of EU Treaties). Where the Treaties do not confer competences on the EU, they remain with