Summary: Candidate Donald Trump described his big, beautiful wall along the Mexican frontier in existential terms; If you don’t have a border, you don’t have a country. Host Neal Conan explores how secure borders became part of the definition of a state, how well walls worked through history and talks with Peter Robinson, the speechwriter who came up withPresident Ronald Reagan’s famous line in Berlin: “Mister Gorbachev, tear down this wall.”
