On August 21, 2012, the Mexican Supreme Court declared unconstitutional Article 57 of the Mexican Code of Military Justice (CMJ) and in doing so complied with several judgments of the Inter-American Court of Human Rights (I/A Court). From the point of view of Mexican law, the Supreme Court’s decision means that civilians who have suffered from the unconstitutional expansion of military jurisdiction in Mexico are, for the first time, protected by the federal judiciary. More significant from the perspective of international law, the decision to bring Mexican law into compliance with the judgments of the I/A Court reflects growing acceptance of that Court’s judgments, and international human rights law, by the states parties to the American Convention on Human Rights (American Convention), as well as the general decline of military jurisdiction and impunity in the region.