Whatever else it is supposed to do, a federal system of government should offer policy-makers a division of labor. Perhaps the first to fully appreciate that benefit was Alexis de Tocqueville. He admired the federated regime of the United States because, among other virtues, it enabled its central government to focus on primary public obligations (“a small number of objects,” he stressed, “sufficiently prominent to attract its attention”), leaving what he called society’s countless “secondary affairs” to lower levels of administration. Such a system, in other words, could help officials in Washington keep their priorities straight.

It is this potential advantage, above all others, that warrants renewed emphasis today. America’s national government has its hands full coping with its continental, indeed global, security responsibilities, and cannot keep expanding a domestic policy agenda that injudiciously dabbles in too many duties best consigned to local authorities.

Indeed, in the habit of attempting to do a little of everything, rather than a few important things well, our overstretched government suffers a kind of attention deficit disorder. Although this state of overload and distraction obviously is not a cause of catastrophes such as the successful surprise attacks of Sept. 11, 2001, the ferocity of the insurgency in Iraq, or the submersion of a historic American city inundated by a hurricane in 2005, it may render such tragedies harder to prevent or mitigate.

You can read the full study on the Brookings Web site at: www3.brookings.edu/views/papers/nivola/20070709.pdf