Californi-based Wells Fargo bank has tapped Jon Campbell, the CEO of Wells Fargo in Minnesota, to head a new effort to retain customers. The bank lost some customers after recent acquisitions, and officials are hoping to keep the trend from getting out of control. Wells Fargo is also planning to build new branches in the Twin Cities for the first time in years. The bank's plans are the topic two articles in this week's "The Business Journal." John Hoogesteger (hoog-uh-STAY-ger) is the reporter who wrote the articles. He says Wells Fargo's top leadership has a lot of confidence in Jon Campbell.