A major snowstorm that was sweeping across the Midwest and beyond, left at least seven people dead, clogged highways and forced hundreds of flight delays and cancellations at airports already bracing for the holiday rush. The storm was blamed for deaths in at least five states, with parts of Iowa and Wisconsin hit with more than a foot of snow. In Utah, a woman died trying to walk for help after her car became stuck in the blizzard. Storm-related traffic deaths also were reported in Kansas, Iowa, Wisconsin and Nebraska. Minnesota, Iowa and Wisconsin activated National Guard troops to help rescue stranded drivers.