LOS ANGELES—The two busiest container ports in the United States are experiencing their largest backlogs of ships on record, with about 60 vessels waiting to enter the ports Tuesday. Port of Los Angeles spokesperson Phillip Sanfield said the backlog can be attributed to an unprecedented buying surge that is straining the supply chain. “[This is] the busiest year any western hemisphere port has had,” Sanfield told The Epoch Times. Stanfield said the buying surge started in the summer of 2020. Due to the pandemic, he said people shifted their purchasing behaviors from the service industry to consumer goods. He said that although the pandemic has eased, the buying surge has not slowed down. Currently, there are a quarter-million shipping containers waiting to enter the ports, he said. That led to a 60 to 70 percent increase in the amount of cargo that is being offboarded every day, he added. Together, …