The President can not change the US Constitution. He can not propose amendments not does he approve or disprove proposals for amendments. (He could come out for or against a proposed amendment, but it would only be an opinion.) Not amendment were ratified or proposed by Congress while Adams was in office.
No, John Q. Adams was not a contributor to the writing of the Constitution. James Madison is the man known as the father of the Constitution with good reason.
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John Quincy Adams
No, John Quincy Adams is not single.
No, this was John Adams, John Quincy Adams' father.
John Quincy Adams was Evangeline Adams grandfather.
Louisa Adams was the wife of John Quincy Adams.
John Quincy Adams was of English descent.
John Quincy Adams was an only child.
John Quincy Adams!
John Adams lived in Quincy, Massachusetts. Note that his son was named, "John Quincy Adams".