New Yorker journalist Jonathan Blitzer has been covering the immigration crisis at America’s southern border for nearly a decade, but the current emergency is the end of a much larger story. In this, his first book, Blitzer goes back to the beginning: to the shadowy civil wars in El Salvador and Guatemala in the 1980s; to the American prison system in the 1990s and the policies of mass deportation that transformed local street criminals into international crime syndicates; to Honduras’s brutal c