TOPSHOT - Central American migrants -mostly Hondurans- moving in a caravan towards the United States in hopes of a better life, head to Mexicali's downtown in Mexico's Baja California State, after leaving a shelter on November 19, 2018, on the border with Calexico, in California, US. - US President Trump has sent about 5,800 troops to the border to forestall the arrival of large groups of Central American migrants travelling through Mexico and towards the US, in a move critics decry as a costly political stunt to galvanize supporters ahead of midterm elections earlier this month. (Photo by Pedro PARDO / AFP)