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Constitution

The 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.

The Preamble to the U.S. Constitution consists of this single sentence that introduces the document and its purpose. The Constitution is the supreme law of the United States of America and is the oldest written national constitution still in force. Completed on September 17, 1787, with its adoption by the Constitutional Convention in Philadelphia, Pennsylvania, it was later ratified by special conventions in each of the thirteen United States.