Image taken on March 16, 2014, shows a migrant child walking before crossing the border to the United States from the Otay gate, in Tijuana city, Mexico. On Jan. 25, 2017, U.S. President Donald Trump signed an executive order for a border wall to be built, but Center for Latin American Monetary Studies (CEMLA) estimated that migration from Mexico has been slowing down since 2008 after growing from 1990 to its peak in 2007. (Xinhua/Guillermo Arias)
