Again... The SCOTUS ruling was that slaves are property and blacks can be segregated. IF, as you argue, the Court decides what the Constitution means... we need to enslave black again because this was their ruling. We had no right to override that and it remains the court's decision on the matter.
Also, I notice you have not addressed the previous argument that Federal government can "do what needs doing" under the general welfare clause. I assume you read what Madison had to say on the subject, so was Madison wrong? Do you have some kind of explanation for how the Constitution grants government unlimited power under "general welfare" but then turns around and specifies enumerated powers?
Sorry libertarian......but The Federalist Papers are not law
So much so that they were anonymously published
Madison had to edit and re-edit the constitution to satisfy all signatories. What is in there is the law.....not what Madison may have wanted
The courts decide....not the Federalist Papers