Overview

• The Senate approved the revised amparo bill in general with 82 votes in favor and 38 against after expedited debate on changes to Article 128, Article 129 and the third transitory.
• The Chamber of Deputies had passed the measure 322–128–3, adding a transitory that states concluded stages keep prior rules and only future procedural acts will follow the new law.
• The reform narrows suspensions and standing, limits amparo effects to the petitioner, tightens ‘legitimate interest,’ and swaps the term ‘public interest’ for ‘provisions of public order.’
• President Claudia Sheinbaum and allies argue the transitory aligns with Supreme Court jurisprudence and is not retroactive, while opposition parties call it ‘disguised retroactivity’ and signal a constitutional challenge.
• Fitch Ratings warns the changes could heighten regulatory risk and reduce predictability for companies relying on permits and concessions, citing exposure in energy, transport, telecom and mining.