The compact theory did not seem to match up with the expectations of the Constitution to some.
The leading 19th-century commentary on the Constitution, Justice Joseph Story's Commentaries on the Constitution of the United States (1833), likewise rejected the compact theory and concluded that the Constitution was established directly by the people, not the states, and that it constitutes supreme law, not a mere compact. In Martin v. Hunter's Lessee (1816), the Supreme Court explicitly rejected the idea that the Constitution is a compact among the states: "The Constitution of the United States was ordained and established not by the States in their sovereign capacities, but emphatically, as the preamble of the Constitution declares, by 'the people of the United States.'" 
