2. It is also incumbent on the Supreme Court of Justice to administer justice on matters of legal, constitutional and electoral nature. 3. The President of the Supreme Court of Justice shall be appointed by the President of the Republic from among judges of the Supreme Court of Justice for a term of office of four years. Section 125 (Functioning and Composition) 1. The Supreme Court of Justice shall operate: a) In sections, like a court of first instance, in the cases provided for in the law; b) In plenary, like a court of second and single instance, in the cases expressly provided for in the law; 2. The Supreme Court of Justice shall consist of career judges, magistrates of the Public Prosecution or jurists of recognised merit in number to be established by law, as follows: a) One elected by the National Parliament; b) And all the others designated by the Superior Council for the Judiciary. Section 126 (Electoral and Constitutional Competence) 1. It is incumbent upon the Supreme Court of Justice, on legal and constitutional matters: a) To review and declare the unconstitutionality and illegality of normative and legislative acts by the organs of the State; b) To provide an anticipatory verification of the legality and constitutionality of the statutes and referenda; c) To verify cases of unconstitutionality by omission; d) To rule, as a venue of appeal, on the suppression of norms considered unconstitutional by the courts of instance;