KENNEBUNKPORT — One early September day in 1991, then-President George H.W. Bush sat alone on the terrace of his family home at Walker's Point and finished a lunch of clam chowder and a glass of sherry before updating his diary. Over several weeks, the blue fish had been biting and Bush had hooked many of them while trolling the rocky shoreline from his boat. He had sat out on the granite ledge with his wife, Barbara, and admired the pounding waves when a big storm blew through. He had enjoyed hours on the porch, watching his grandchildren play among...