OAKLAND—Truck drivers choked traffic at the Oakland, California, seaport on Monday protesting a state law that makes it harder for independent contractors to transport goods and could limit labor at the state’s already clogged seaports, threatening to worsen the nation’s pandemic-fueled supply chain jams.
California’s ports handle about 40percent of container goods that enter the United States. Trucking disruptions come at a time when unions and West Coast port employers are also negotiating a high-stakes labor contract.
