6. “Any interinstitutional contract or interinstitutional agreement with international dispute settlement mechanisms involving the Federation, Mexican natural or legal persons and governments, foreign natural or legal persons or international organizations shall 1. treat Mexicans and foreigners involved in the party to the dispute the same treatment, in accordance with the principle of granting international reciprocity; II. to ensure that the parties are guaranteed the hearing and the exercise of their defence; and III. Ensure that the composition of decision-making bodies guarantees their impartiality” (Article 8). That exchange of letters is an international agreement stricto sensu, (29) since its constituent elements, scope, obligations and nature include the natural conditions of a treaty. The content is intended to avoid double taxation between shipping companies and airlines of the States party to the respective exchange of letters. By Decree 4667 of 19 December 2005, the national Government ordered the provisional application of the nascent instrument, provided that (i) a trade agreement was in progress; ii) that it has been concluded in the field of international organizations such as LAIA and (iii) sent by the President of the Republic for the approval of Congress which leads to the adoption of Law 1211 of 2008. In proposing the separate text of the Exchange of Letters, which allows for its provisional application, the Constitutional Court invoked in that judgment a broad interpretation of the constitutional text and established that the provisional application of the treaties, of its own, could be given because of the importance of the case for the Colombian State. Decree 1860 of 2012 is not yet subject to constitutional review to determine the extent to which the Executive has taken the exceptional measure of provisional application of the Treaties, taking into account the analysis under consideration and consideration of this Part39. For the acceptance of the authentication of the text of the treaty, in order to express the agreement of the State, to be bound by a treaty, a person shall be considered a representative of a State: (a) when the appropriate full powers are presented; or (b) it follows from the practice of the States concerned or from other circumstances that the intentional intention of those States is to treat that person as representing the State for those purposes and to renounce the practice or other circumstances applied by the States concerned, according to which the intention of those States is: to consider that person as a representative of the State for those purposes and to renounce that person. the presentation of credentials. 18 Collection Diplomatic School, Spain and Practice of International Law, LXXV Anniversary of Mafat Legal Assistance, p.
62. “It should be noted that this figure has not been applied pacifistly in its development, as some States have considered that its application could lead to conflicts between national and international law, as it may serve as a pretext to circumvent the domestic legal requirements of their subsequent approval and ratification, or simply to avoid domestic political situations, which even prevent the assumption that the possibility can be raised. that the competent legislator knows the contract` . . .