On September 17, 1787, the United States formally adopted and signed the U.S. Constitution. 233 years later, those 4,543 words remain the most influential document in American history.
On this day each year, ODNI officers annually retake their oath to office to support and defend the Constitution. To all Americans, Happy Constitution Day!
![](https://i.ytimg.com/vi/Sh0rcl-74ws/mqdefault.jpg)