Squabbling amongst states in a federal system may be an inherent feature of federalism. How much the jealousies and petty interests manifest in terms of policies may depend on the balance of power between the federation itself and its member-states. In the case of the E.U., the spat at the state level over how to allocate the tens of thousands of refugees from the Middle East and Northern Africa effectively stymied federal action that could have assuaged the angst. It is no accident that the state governments hold most of the governmental sovereignty in the E.U. federal system. By contrast, the case of the U.S. demonstrates that nearly consolidated power at a federal level can obviate, or stifle, strife between state governments. This alternative is not optimal either, for interstate differences tend to be ignored, resulting in increasing pressure on the federal system itself. How to handle municipal requests for drinking water from Lake Michigan is a case in point.
The full essay is at “Great Lakes Water: American Federalism.”