Image taken on Oct. 1, 2014 shows Arturo Villasenor, 65, a migrant deported from Chicago after living there for 28 years, watching through the border wall between Mexico and the U.S. in Tijuana, 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)