Lost Children Archive: Valeria Luiselli's New Novel Bears Witness to the U.S. Immigration Crisis

Days after Homeland Security Secretary Kirstjen Nielsen defended President Trump's declaration of a national emergency at the southern border, we speak with Valeria Luiselli about her new book, "Lost Children Archive." It chronicles one family's journey from New York to the southwestern U.S.-Mexico border in Arizona as the mother researches the plight of migrant children seeking refuge in the United States.