» Mobile site Article maintained with help from Geraldina González de la Vega and Alex Alí Méndez Díaz. Last update: Feb. 7, 2020. Alex Alí Méndez Díaz Eighteen of Mexico's 31 states and the federal capital Mexico City have marriage equality and same-sex couples can marry in the other 13 states if they go to a federal judge and get a personalized injunction (amparo), a process that is