Now, the truth of the matter is that the idea of the meaning of the word 'federal' underwent a change from the Articles of Confederation to the Constitution. Under the Constitution, the states gave up their sovereignty in the Calhounian sense. And if you have any doubt about that, let me just read a sentence from George Washington. 'It is obviously impracticable in the federal government of these states to secure all rights of independent sovereignty to each, and yet provide for the interest and safety of all'. So all the rights of independent sovereignty, or some of those rights, have been surrendered.

The Real Abraham Lincoln: A Debate (2002)