The relationship between the US and Canada is a long-standing friendship. But it’s not without occasional tension. There are times that tension is even felt in Vermont. David Kilgour and David T. Jones have just written a new book on the subject, called "Uneasy Neighbors: Canada, the USA, and the Dynamics of State, Industry, and Culture." They spoke with VPR’s Jane Lindholm about the status of our relationship with Canada.