Author and journalist Michael Brendan Dougherty talks about his book My Father Left Me Ireland with EconTalk host Russ Roberts. Dougherty talks about the role of cultural and national roots in our lives and the challenges of cultural freedom in America. What makes us feel part of something? Do you feel American or just someone who happens to live within its borders? When are people willing to die for their country or a cause? These are some of the questions Dougherty grapples with in his book and in this conversation.