1. If the Constitutional Court pronounces the unconstitutionality of a norm contained in any decree or international treaty, the President of the Republic or the Representative of the Republic, as appropriate, must veto the legislative act and return it to the entity or organ that passed it.
2. In the case provided for in paragraph (1), the decree may not be enacted or signed unless the entity or organ that passed it expunges the norm that has been held unconstitutional, or, where applicable, the entity or organ confirms the norm by a majority that is at least equal to two thirds of all Members who are present and is greater than an absolute majority of all the Members in full exercise of their office.
… (Art. 279)