photo by Jennifer SilverbergWilliam Chignoli on the steps of ASC's clinic on South GrandJust two months ago, the low-cost immigrant healthcare center La Clinica closed its doors owing to lack of funding. Now Acción Social Comunitaria, a local nonprofit that offers a broad array of social services for low-income minority groups, is "on hold" after William Chignoli, the organization's founder and executive director, resigned from his leadership position last week.Chignoli, who was profiled i