In 1987 the United States celebrated the 200th anniversary of the Constitution, The bicentennial brought out considerable debate regarding the convention in Philadelphia, which led to the document being submitted to the states for ratification, During the celebrations and debates, a decades-old theory resurfaced to considerable debate among scholars and historians, In 1988 followed by lobbying interested groups, the US Congress passed a resolution, to acknowledge the contribution of the Iroquois Confederacy of Nations to the development of the United States Constitution.