September 17 is designated as Constitution Day and Citizenship Day to commemorate the signing of the U.S. Constitution in Philadelphia on September 17, 1787. Constitution Day became a national observance in 2004, when Senator Robert Byrd passed a bill designating September 17 as the day for citizens to commemorate the signing of the U.S. Constitution and learn more about our founding document. Senator Byrd once said, "Our ideals of freedom, set forth and realized in our Constitution, are our greatest export to the world." He added the Constitution Day clause to his 2004 federal spending bill because he believed that all citizens should know about their rights as outlined in the Constitution. This clause mandates the teaching of the Constitution in schools that receive federal funds, as well as federal agencies