
Mexico's President Enrique Pena Nieto observes the national flag during the celebrations of the "Cry of Independence" at Constitution Square in Mexico City, capital of Mexico, on Sept. 15, 2015. (Xinhua/Jose Pazos/NOTIMEX)

Mexico's President Enrique Pena Nieto observes the national flag during the celebrations of the "Cry of Independence" at Constitution Square in Mexico City, capital of Mexico, on Sept. 15, 2015. (Xinhua/Jose Pazos/NOTIMEX)