Happy Constitution Day! On this day in 1787, the US Constitution was signed. The United States Constitution is the world’s longest surviving written charter of government, and many nations that have been established since 1787 have considered the Constitution as a model for their own foundations. More than two centuries after its ratification, the United States Constitution remains a vital and living document, strengthened by amendments, serving as both guide and protector of U.S. citizens and their elected officials.
http://www.senate.gov/artandhistory/history/common/generic/ConstitutionDay.htm