"Sam knew Jim Buchanan a little from Washington"

 James Buchanan (1791-1868) was the 15th President of the USA (1857–1861). Before his presidency he was the Minister for the United Kingdom (the US ambassador) during the presidency of Franklin Pierce. He is ranked by historians as one of the worst Presidents of the USA for his inability to calm the escalating tensions between the North and South in the run up to the Civil War.