Why is "Politics of the European Union" trending?

Wikipedia Overview

The political structure of the European Union (EU) is similar to a confederation, where many policy areas are federalised into common institutions capable of making law; the competences to control foreign policy, defence policy, or the majority of direct taxation policies are mostly reserved for the twenty-seven state governments. These areas are primarily under the control of the EU's member states although a certain amount of structured co-operation and coordination takes place in these areas. For the EU to take substantial actions in these areas, all Member States must give their consent. Union laws that override State laws are more numerous than in historical confederations; however, the EU is legally restricted from making law outside its remit or where it is no more appropriate to do so at a state or local level (subsidiarity) when acting outside its exclusive competences. The principle of subsidiarity does not apply to areas of exclusive competence.