I don't mean to split hairs FRiend but the Constitution granted no rights. The Founding Fathers correctly believed that those rights preexisted long before the Constitution was written. That split hair does not diminish your otherwise excellent post.
I agree that it does not grant them, but as the founding document of this country it establishes them as it establishes the federal government.
It is the contract.
The federal government is about to breech that contract. If it ignores the document of my rights, it ignores the document that allowed for its existence.
If one block of the foundation is removed, the entire structure no longer exists.
That does not mean my rights no longer exist, though as you say they existed before the constitution, but it most certainly means that the government has ceased to exist.