Article I-28: The Court of Justice of the European Union
1. The Court of Justice of the European Union shall include the Court of Justice, the High Court and specialised courts. It shall ensure respect for the law in the interpretation and application of the Constitution.
Member States shall provide rights of appeal sufficient to ensure effective legal protection in the fields covered by Union law.
2. The Court of Justice shall consist of one judge from each Member State. It shall be assisted by Advocates­General.
The High Court shall include at least one judge per Member State.
The judges and the Advocates­General of the Court of Justice and the judges of the High Court shall be chosen from persons whose independence is beyond doubt and who satisfy the conditions set out in Articles III-260 and III-261. They shall be appointed by common accord of the governments of the Member States for six years. Retiring judges and Advocates­General may be reappointed.
3. The Court of Justice of the European Union shall in accordance with the provisions of Part III:
(a) rule on actions brought by a Member State, an Institution or a natural or legal person;
(b) give preliminary rulings, at the request of Member State courts, on the interpretation of Union law or the validity of acts adopted by the Institutions;
(c) rule in other cases provided for in the Constitution.