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>The Constitution does not grant rights: we already have them. It sets limits on the government's ability to infringe on those rights.
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>So the Constitution does not grant certain rights in the 6th. Amendment to the accused in a criminal action? The 14th. Amendment does not grant rights to due process?
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>If we already had the rights, why do we need the constitution????
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>Please explain your logic...

It's the same logic used by the people who wrote the ninth amendment.

The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people.