American CreedThe American Creed is a term used to refer to the idea that the defining element of American identity, first formulated by Thomas Jefferson and elaborated by many others, includes liberty, equality, justice, and humanity.The American's Creed (resolution)"The American's Creed" is the title of a resolution passed by the U.S. House of Representatives on April 3, 1918. It is a statement written in 1917 by William Tyler Page as an entry into a patriotic contest that he won.