WASHINGTON - There are two sets of policy issues emanating from the rubble and horror of Port-au-Prince: “Whither Haiti?” and “Whither relief aid?”

With Secretary of State Hillary Clinton and USAID Administrator Rajiv Shah visiting the country, most of the attention is on the first question.  Is there, policymakers are asking, some dynamic by which the gravity of the earthquake will finally mobilize substantial global interest in building a functioning nation-state on the western end of Hispaniola?  Will the international donors finally sustain their development efforts sufficiently to help build the governance and economic...