International human rights law has played a key role in terms of equality and non-discrimination in Mexican constitutional case law in the last decade. In the first stage, a major ruling against the Mexican State in the Radilla case was issued by the Inter-American Court. The second begins with a broad constitutional reform that promoted a decisive opening of the Constitution to international treaties. The third is regressive because it elevates the legal weight of constitutional restrictions to human rights. The fourth stage normalizes the application of international law. Mexican constitutional practice has changed remarkably in the last 10 years as never before. However, this normative system has not yet had a positive impact on the collective state of rights, structural inequalities and discrimination in Mexican society.