One of the puzzles in constitutional law has been the original meaning of the Ninth Amendment. Some years ago, during his unsuccessful confirmation hearings, Judge Robert Bork analogized our lack of understanding of the Amendment to the situation where the language of a constitutional provision was obscured by an inkblot. He argued that since we don’t understand the provision, we are in no better position to enforce it than if an ink blot covered it.
Over the years, various explanations have been offered for the amendment. Some have argued that it protects enumerated natural rights to the same extent as the enumerated constitutional rights. Others have interpreted it to have a much less significant role.
In my view, the best interpretation of the Amendment is supplied by Michael McConnell in a relatively recent law review article. At the beginning of my scholarly career, I had come upon the same idea, but was persuaded not to write it up. My mistake, although I don’t think I would have done as good a job as McConnell does.