Human Rights Law in Mexico

Introduction

The 2011 human rights reform represented a watershed moment in Mexican constitutional law, fundamentally restructuring the status of human rights within the legal order. The reform amended Articles 1, 3, 11, 15, 18, 29, 33, 89, 97, and 102 of the Constitution, expanding the catalogue of rights, elevating international human rights treaties to constitutional rank, and strengthening the National Human Rights Commission (Comisión Nacional de los Derechos Humanos, CNDH). The reform established the principle of pro persona interpretation as the guiding standard for human rights protection.

Constitutional Framework

Article 1 of the Constitution, as reformed in 2011, establishes that all persons enjoy the human rights recognized in the Constitution and in international treaties to which Mexico is a party. The article prohibits discrimination based on ethnic origin, gender, age, disability, social condition, health, religion, opinions, sexual orientation, marital status, or any other ground. The reform mandated that all authorities, within their competence, promote, respect, protect, and guarantee human rights.

International Treaty Hierarchy

Prior to 2011, international human rights treaties were considered subordinate to the Constitution but superior to federal laws. The 2011 reform elevated these treaties to constitutional rank, creating a “bloc of constitutionality” (bloque de constitucionalidad) that includes both constitutional provisions and international human rights instruments. The SCJN clarified in Contradicción de Tesis 293/2011 that human rights from treaties are on equal footing with constitutional rights but subject to constitutional limitations.

National Human Rights Commission

The CNDH is an autonomous constitutional body responsible for the protection, promotion, and oversight of human rights. It receives complaints of human rights violations by federal authorities, issues recommendations (which are not legally binding but carry significant moral weight), and conducts investigations into systematic violations. The CNDH also has the power to file actions of unconstitutionality (acciones de inconstitucionalidad) before the SCJN challenging laws that violate human rights.

Pro Persona Principle

The pro persona principle requires that when multiple human rights norms apply, the most protective standard prevails. This principle guides judicial interpretation and requires courts to choose the interpretation that best protects individual rights. The principle applies to conflicts between constitutional and treaty provisions, as well as between different treaty provisions, ensuring maximum protection for rights holders.

Conclusion

The 2011 human rights reform transformed Mexican constitutional law, establishing human rights as the central axis of the legal order. The incorporation of international human rights treaties, the strengthening of the CNDH, and the adoption of the pro persona principle have created a robust framework for rights protection, though implementation challenges and ongoing human rights violations remain significant concerns.