The exit of Enrique Inzunza from the Morena bench reduced the formal count of the ruling coalition in the Senate to 85 senators, down from the 86 needed to reach two-thirds of the 128 total legislators. ^[1] The Mexican Congress of the Union began its third and final year of the LXVI Legislature on September 1, 2026, with an agenda of 31 legal instruments driven by the government of Claudia Sheinbaum. ^[2] Higinio Martínez, a member of the Morena party, was sworn in as the new president of the Mesa Directiva of the Mexican Senate on September 1, 2026. ^[3] Raúl Bolaños-Cacho Cué, the new president of the Mexican Chamber of Deputies, stated during his inauguration speech that the third year of the LXVI Legislature will be marked by the electoral context, which increases the responsibility of legislators to prevent political competition from displacing parliamentary work. ^[4] Alejandro Moreno, representing the PRI party in Mexico, stated at the start of the third year of the LXVI Legislature that the party reaffirms its commitment to defending the Republic, institutions, and citizens' rights. ^[5] Ignacio Mier, coordinator of Morena in the Senate, stated on August 30, 2026, that the coalition must negotiate with other forces, including PAN and PRI, to achieve the two-thirds majority required for constitutional reforms. ^[6] Legislative priorities identified by the government include the 2027 Economic Package, legislation on artificial intelligence and social networks, femicide, corruption, dual nationality, and rights for indigenous and Afro-Mexican peoples. ^[7] Higinio Martínez was elected by the plenary with 116 votes in favor to lead the Mesa Directiva. ^[8] Alejandro Moreno announced plans to create a pioneering and solid regulatory framework for artificial intelligence in Mexico, establishing clear limits for ethical use. ^[9] Alejandro Moreno stated that public security will be the main pillar of the PRI's actions in both legislative chambers. ^[10] The party committed to supporting social programs while acknowledging they are insufficient to eliminate poverty, and pledged to recover the supply of medicines and rebuild the healthcare system. ^[11]