a trump administration's attempt to prosecute all migrants who have illegally entered the united states. natalia cornelio met with dozens of families and describes the zero tolerance policy as torture. >> one of the women i interviewed today told me that she was breast-feeding her daughter when the government took her daughter from her, and when she resisted, she said that's when they put handcuffs on her. >> reporter: other activists say some families have been misled by federal authorities, so that the children can be separated and sent to different detention facilities. a c an officil says nothing could be further from the truth and the allegations are unsubstantiated. the zero tolerance policy is such a dramatic change that it is confusing and appears arbitrary. on the bridges across the rio grande, federal agents are often standing right at the international boundary, turning away many immigrants, some who