Guest: Todd Miller is a journalist and author who has researched and written about border issues for more than 15 years, the last eight as an independent journalist and writer. He is the author of the books Border Patrol Nation: Dispatches from the Front Lines of Homeland Security, Storming the Wall: Climate Change; Migration, and Homeland Security; Empire of Borders: The Expansion of the U.S. Border Around the World, and his forthcoming, Build Bridges, Not Walls: A Journey to a World Without Borders. Todd Miller is based in Tucson, Arizona.