Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. What Americans Don't Know About the US Constitution Masood Farivar WASHINGTON - Written in 1787, the U.S. Constitution is the world's oldest written charter of government in use today. Most Americans are familiar with its first three words -- "We the People." Yet they "don't understand" the venerable document, says Kimberly Wehle, a professor of law at the University of Baltimore. To get readers interested in the charter, Wehle recently published "How to Read the Constitution -- and Why," a back-to-the-basics, accessible primer on the U.S. charter of government written for a time when many on the left and some on the right think the Constitution is under assault. The book's launch coincides with the end of a consequential term for the Supreme Court, during which President Donald Trump's second court nominee, Brett Kavanaugh, joined the bench following a contentious confirmation hearing. It also coincides with the nation's 243rd observance of Independence Day, July 4. VOA spoke with Wehle about the Supreme Court and how and why to read the Constitution. The following excerpts have been edited for clarity and length. The U.S. Constitution is the oldest surviving written constitution in use today. What makes it so enduring? .