 Eight Chicago suburbs are seeking to prevent the merger between Canadian Pacific and Kansas City Southern from happening, saying that the additional traffic coming from the merger would create more gridlock from blocked crossings and could cause environmental harm to their communities. Local officials representing the communities of Bartlett, Bensenville, Elgin, Itasca, Hanover Park, Roselle, Schaumburg and Wood Dale say they will collectively file their objections with the Surface Transportation Board next Monday. 