An alderman on Chicago’s struggling West Side is steamed about a plan by Minneapolis-based U.S. Bancorp to close a full-service branch in her neighborhood.Ald. Emma Mitts (37th Ward) said the company’s decision to shut down its U.S. Bank outlet at 4909 W. Division St. blindsided her. “They’re leaving high-and-dry with no warning,” she said, calling the process “disrespectful.”