Barbecued meat has played a surprisingly important role in United States presidential politics over the years. George Washington was a Virginia-style barbecue enthusiast. Recently, archaeologists discovered a barbecue pit on the south lawn of Montpelier that was in use during Madison’s lifetime. After the civil war, and before television, when many Americans weren't guaranteed three solid meals a day, a free barbecue dinner was a compelling incentive to listen to a politician pitch for votes. But one President made barbecue an art form. On today's episode, the Lyndon B. Johnson National Historical Park.