In 2004, Thomas DiLorenzo wrote that libertarian conservative constitutionalists believe that the way to limit government is to enforce the United States Constitution. However, DiLorenzo criticized them by writing that "[t]he fatal flaw in the thinking of the libertarian/conservative constitutionalists stems from their unawareness or willful ignorance of how the founders themselves believed the Constitution could be enforced: by the citizens of the free, independent, and sovereign states, not the federal judiciary". DiLorenzo further wrote that the powers accrued to the federal government during the American Civil War overthrew the Constitution of 1787.