TOPSHOT - A US police agent stands guard near the US-Mexico border fence as seen from Playas de Tijuana, Mexico, on November 15, 2018. - The Central American migrant caravan trekking toward the United States converged on the US-Mexican border on November 15, 2018, after more than a month on the road, undeterred by President Donald Trump's deployment of thousands of American troops near the border. (Photo by ALFREDO ESTRELLA / AFP)