Unlike that of the E.U., the U.S. system of public governance is structurally biased toward political consolidation at the expense of federalism. In fact, the bias extends to jurisprudence. This is evident in a ruling by the U.S. Court of Appeals for the Fourth Circuit on September 8, 2011 against Virginia on the 2010 federal health-insurance reform law.
The full essay is at "Spending in American Federalism."