Two men who were framers and did not sign the U.S. Constitution were Thomas Jefferson and John Adams. Thomas Jefferson never signed the Constitution; he was in France during the Constitutional Convention, where he served as the U.S. minister. John Adams was serving as the U.S. minister to Great Britain during the time of the Constitutional Convention. So, he did not attend the Convention, and he did not sign the Constitution.

Signers of the United States Constitution, the supreme law of the United States, include 39 of 55 delegates who attended the Constitutional Convention. The convention's secretary, William Jackson, also signed the document to authenticate the results of the Convention's sessions.

Also, prominent men and Founding Fathers of the United States, John Jay of New York and Samuel Adams of Massachusetts, missed the Constitutional Convention and never signed the U.S. Constitution.

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