Author takes cross-country road trip to explore what holds America together

Francis Barry and his wife traveled coast to coast in a 2017 Winnebago RV in the fall of 2020, heading west on the Lincoln Highway and returning south. Along the way, he had many conversations about the state of the US, captured in the book “Back Roads and Better Angels: a Journey into the Heart of American Democracy.” Barry joins CBS News to talk about what he learned.