This week the International Longshore and Warehouse Union and the Pacific Maritime Association started negotiations on a new contract that would affect dockworkers up and down the West Coast. As the supply chain already faces major disruptions, some - including farmers in the Pacific Northwest - are concerned about a labor impasse that could create further challenges. We hear more from Peter Goodman, a global economic correspondent for The New York Times and author of "Davos Man: How the Billionaires Devoured the World."