The Declaration of Independence has indeed been cited by the Supreme Court to give evidence of the intent of the drafters of the Constitution, where the phrasing in the Constitution is ambiguous. So you are perfectly correct.
They have used other documents from the time period for the same reasons. The point is it does not have direct legal Athority only incite into the way people thought.
The Declaration of Independence has indeed been cited by the Supreme Court to give evidence of the intent of the drafters of the Constitution, where the phrasing in the Constitution is ambiguous. So you are perfectly correct.