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The Constitution of the United States of America: Welcome

Resources for research on the U.S. Constitution

The U.S. Constitution

The U.S. Constitution established America's national government and fundamental laws, and guaranteed certain basic rights for its citizens. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia.

The Constitution of the United States of America

Constitution Day commemorates the formation and signing of the U.S. Constitution by thirty-nine brave men on September 17, 1787, recognizing all who, whether born in the U.S. or by naturalization, have become citizens.

Predecessors to the U.S. Constitution

Consult a librarian

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National Constitution Center