DES MOINES -- A high-speed rail network radiating from Chicago's Union Station through nine Midwestern states could carry 13.6 million passengers annually by 2025, according to a new report. The Midwest Regional Rail System report released Tuesday confirms the viability of a 3,000-mile rail network stretching through Iowa, Illinois, Indiana, Michigan, Minnesota, Missouri, Nebraska, Ohio and Wisconsin, said Mark Wandro, Iowa's transportation director. Trains would travel at speeds of up to 110 m.p.h., cutting hours off trips between major cities. The study, led by Transportation Economics & Management Systems Inc., a Frederick, Md.-based consulting firm, said significantly reduced travel times,...