A turf war is brewing between West Coast ports and Canadian ports vying for the heartland of America. The Canadian government has launched an aggressive $7 million marketing campaign aimed at diverting Asian imports from the West Coast to ports in Vancouver and Prince Rupert. …The heads of the West Coast’s six largest ports are banding together in an effort to bring shipments back to their respective regions. The group recently traveled to Washington, D.C., to … plead for the creation of a national freight movement policy in the United States, while also providing funds for a series of overdue highway, rail and bridge improvements. Chinese ships crossing the Pacific Ocean can get to Prince Rupert three days faster than traveling down to Los Angeles or Long Beach. The Canadian town also offers direct rail access to the Midwest states, making for faster delivery.