Chapter 4 Government
Article 54
Exclusive Powers of the Congress
1. To approve or reject the international treaties presented by the President of the Republic prior to their ratification. The approval of a treaty will require, in each Chamber, the quorum that corresponds, in accordance with article 66, and shall be submitted, as appropriate, to the formalities of a law.
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The provisions of a treaty may only be repealed, amended or suspended in the manner provided in the treaties themselves or in accordance with the general rules of international law.
Nothing in this Part shall be interpreted as limiting or prejudicing in any way existing or developing rules of international law for purposes other than this Statute.