"The warehouses are full": Cargo begins clogging Port of Los Angeles amid railroad worker shortage

Just as retailers are starting to gear up for the holiday season, there are warnings of a possible nationwide shipping logjam. A shortage of rail workers, not enough rail cars and importers failing to pick up their goods are causing cargo to pile up once again at the Port of Los Angeles — a key link in the U.S. supply chain.

Port director Gene Seroka said containers are already piling up and clogging the docks.

"There are about 35,000 containers that are designated for rail on our docks right now," he said. "A normal day looks more like 9,000 units."