Sources of European Union law and the decision-making process

European Union flag - hand drawn illustration.

The European Union’s institutions and bodies, and the powers conferred on them, derive from the founding Treaties. The Union’s powers have evolved considerably over the years through the successive Treaties, as have its decision-making procedures. This compilation of Fact Sheets describes the sources and the scope of EU law, the various decision making procedures, as well as the procedure related to the adoption of the EU budget.

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