The role of MERCOSUR in regional economic integration and its impact on international negotiations

The Southern Common Market (MERCOSUR) has been one of the main regional blocs in Latin America, with tangible effects on the economic integration and international negotiations of its member countries. This paper analyzes how Mexico's participation, although not as a full member, has been influenced by treaties and parallel agreements with this organization. The analysis focuses on how MERCOSUR promotes common regulatory frameworks, facilitates intraregional trade, and generates challenges for countries outside the bloc. To this end, a practical case of trade negotiations with Argentina and Brazil, key MERCOSUR members, is used to assess the applicable international legislation. The selection of current regulations is based on bilateral treaties, framework agreements, and principles of international economic law. The paper seeks to identify tariff barriers, dispute settlement mechanisms, and provisions related to investments and services. The conclusion highlights the importance of understanding these multilateral organizations so that Mexico can strategically position itself in international negotiations.