Witness: "No Warning" Before U.S. Border Patrol Started Tear Gassing Central American Asylum Seekers

The Mexican government is demanding a full investigation after U.S. border authorities fired tear gas Sunday into a crowd of Central American asylum seekers as they tried to push their way through the heavily militarized border near San Diego. Among those attacked were mothers and small children, who were left gagging and screaming as tear gas spread. The migrants are mostly from Honduras, Guatemala and El Salvador, and are fleeing widespread violence, poverty and mass unemployment. The Border Patrol's use of tear gas has been widely condemned. Trump is now urging Mexico to deport the thousands of Central American migrants who are at or approaching the U.S. border in an attempt to seek asylum. We go to San Diego to speak with Pedro Rios, the director of the American Friends Service Committee's U.S./Mexico Border Program. He witnessed U.S. border agents using tear gas on Central American migrants on the U.S.-Mexico border on Sunday.