In this Friday, June 20, 2014 photo, Central American migrants wait atop the freight train they had been traveling north on, as it starts to rain after the train suffered a minor derailment outside Reforma de Pineda, Chiapas state, Mexico. The train remained stuck in the remote wooded area for a day and a half. Migrants from Guatemala, Honduras, and El Salvador travel north through Mexico by train, by foot, or if they can afford it, by bus. Along the way, they face attacks by criminal gangs and extortion by Mexican authorities. (AP Photo/Rebecca Blackwell) ( Mexico Child Migrants )