Exploring Ad Hoc Regionalism Author:Douglas Porter, Alan D. Wallis A growing number of urban challenges?from threats of environmental degradation and sprawl, to social and fiscal disparity, to economic transformation and globalization?call for action at a regional scale. But regions in the United States largely lack governance capacity to formulate and execute plans to respond to these challenges. Some recent e... more »xperiments aimed at developing governance capacity to address regional challenges rely on augmenting existing government institutions?councils of government, regional planning councils, and the like. But more often they involve interest groups from multiple sectors?public, private and nonprofit?operating in loose-knit, collaborative relations.« less