The so-called "migrant caravan" has grabbed worldwide headlines. Approximately 3,000 people are walking toward the Southern U.S. border from a variety of countries. The caravan appears to have originated in Honduras, and the travelers say they are headed north for many reasons including fear of violence and gangs in their home countries. Many questions surround who the migrants are, and how the U.S. should deal with them.

Sarah Bermeo has been following the situation closely. She is a political economist at the Sanford School of Public Policy at Duke University with expertise in foreign policy, development and migration. Bermeo is author of the book, Targeted Development – Industrialized Country Strategy in a Globalizing World.