Learnings from Wilkinsburg, Pennsylvania. The mayor and business leaders of the city are pursuing a proposal to have the struggling town annexed by Pittsburgh. It wouldn't be the first time something like it happens in the US - Boston, New York, and Los Angeles being examples of where it has happened. But, many of Wilkinsburg's residents are wary of the merger. Why? Nick Keppler examines some of the economic and social pros and cons to consider in a 'city merger'.