Dock workers on the U.S. East and Gulf Coasts have gone on strike, disrupting half of the nation’s ocean shipping. Their first large-scale stoppage in nearly 50 years started early Tuesday, blocking everything from food to automobile shipments across dozens of ports from Maine to Texas. The labor action has led to significant delays and challenges in the supply chain, affecting various industries reliant on maritime transport. The strike highlights ongoing labor disputes and concerns over working conditions in the shipping sector.