The Treaty of the European Union
The European Union is based on the rule of law. This means that every action taken by the EU is founded on treaties that have been approved voluntarily and democratically by all EU Member States. Since 1 December 2009, the Treaty of Lisbon is the rule of law of the EU. It consists of two documents, the Treaty on the European Union (TEU) and the Treaty on the Functioning of the European Union (TFEU).
The Treaty is a binding agreement between all EU Member States. It sets out EU objectives, rules for EU institutions, how decisions are made and the relationship between the EU and its Member States.
If a policy area is not cited in the Treaty, the Commission cannot propose a law in that area.
The complete text can be found here: