What did they do?
They retained all the sovereign powers that they did not expressly grant.

They never parted with their sovereignty, but only with sovereign powers.

Where does sovereignty reside under our system?
With the people of the states.

What follows from all of this?
Why, that each state is left to decide for itself all questions save those which have been expressly given over to Washington to decide.

Who is trying to nullify these inestimable principles and safeguards?
That is the real nullification.