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Constitution Day & Citizenship Day: September 17

Constitution Day and Citizenship Day is observed each year on September 17 to commemorate the signing of the Constitution on September 17, 1787, and “recognize all who, by coming of age or by naturalization, have become citizens.”

The Document

The U.S. Constitution


We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.

Learn more about Constitution Day at the Law Library of Congress.

The Constitution

GETTING STARTED:  These sources give foundational knowledge about the Constitution and the Bill of Rights. 
IN CONTEXT: These sources analyze the constitution throughout history and today.

Becoming a U.S. Citizen

Constitution Day recognizes those who were born and those who have become naturalized U.S. citizens. Here are some resources about the process.

Exhibits & Archives