A Mexico City law allowing same-sex marriages takes effect.
The Chief of Police of Mexico City, Omar García Harfuch, is injured but "out of danger" in an assassination attempt upon him. Two of his bodyguards and a passerby were killed. García Harfuch blamed the attack on the Jalisco New Generation Cartel (CJNG).
Luis Videgaray Caso resigns as Mexico's finance minister amid fallout over President Enrique Peña Nieto's controversial meeting with U.S. presidential candidate Donald Trump in Mexico City. Videgaray is revealed to have been the main advocate of arranging the meeting.