Hundreds of thousands of people, mostly from Central America, arrive at the U.S.-Mexico border every year. What to do with these migrants is one of the most divisive issues in Washington. New Yorker staff writer Jonathan Blitzer says the crisis is partially the result of decades of American policy. Blitzer's new book is called Everyone Who is Gone is Here. He also recounts the stories of those attempting to cross the border.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy