William Leighton Carss (February 15, 1865 – May 31, 1931) was a U.S. Representative from Minnesota; born in Pella, Marion County, Iowa and subsequently moved with his parents to Des Moines, Iowa, in 1867.There he attended the public schools, studied civil and mechanical engineering and followed that profession for a number of years.Carss was fond of British literature, reciting selections from Shakespeare, Carlyle and Burns by heart.He sponsored pro-labor legislation during his first term, supporting old age pensions (anticipating the Social Security system), women's rights and (to the dismay of some of his supporters) the Prohibition Amendment.Carss moved to Duluth in 1929 where he resumed his position as a locomotive engineer at Proctor.