A winter storm swept across the eastern US and Canada, bringing heavy snow and freezing temperatures to the Great Lakes, Midwest, and Northern Plains. Officials in New York and Pennsylvania declared states of emergency as poor conditions disrupted travel across the region.

Parts of New York, Michigan, Ohio and Pennsylvania have been walloped by a major winter storm that dropped feet of lake-effect snow over the weekend. CBS News national weather correspondent Rob Marciano has more on the show and CBS News senior transportation correspondent Kris Van Cleave has a look at how it's complicating post-Thanksgiving travel plans.