on the U.S. National Archives site: The Charters of Freedom".

Produced by the Congressional Research Service, this set provides historical context, in-depth analysis, and citations to court cases that have interpreted our constitution. Other editions and supplements of the analysis and interpretation of the U.S. Constitution [all are PDF]:

articles cover the key concepts of constitutional law, key cases, and individuals who have played a role in the development of our constitution.

focuses on some of our most cherished freedoms: speech, religion, press, and assembly — as well as the right to petition the government.

Most citizens are familiar with the first 10 amendments that make up the bill of rights, but some later amendments are just as important if not more so, covering everything from women's suffrage to prohibition.

shorter, more concise articles on constitutional issues and cases.