DiLorenzo is absolutely wrong in saying that the 13 states were recognized as independent separate sovereignties. They were not. In 1826, Madison and Jefferson together, in making rules for the University of Virginia, resolved that the first of the documents that should be studied by the law faculty of the University of Virginia, was the Declaration of Independence as the Act of Union of the States. The Declaration was a declaration of separation from Great Britain and union with each other. And the state legislatures, or state revolutionary colonial legislatures on the road to independence—almost all of them passed resolutions calling for independence and for union.

The Real Abraham Lincoln: A Debate (2002)