Fear, anger as border guards tighten net in southern Mexico

Sitting inside a truck at a checkpoint near Mexico's southern border, a soldier is scrolling through images on a screen, looking for human forms hidden in cargo vehicles.The scanning equipment delivering the images to his computer is part of Mexico's new bid to stop undocumented migrants and human traffickers.It is a crackdown that is about to get stronger, under the deal the Mexican government struck Friday with the United States to avoid President Donald Trump's threatened tariffs.