SUGAR LAND--May 10, 2021--Researched by Industrial Info Resources (Sugar Land, Texas)--The bottleneck of cargo ships at the Port of Los Angeles and the adjoining Port of Long Beach continues, causing headaches for U.S. manufacturers. COVID-19 pandemic-related labor shortages, a boom in e-commerce, a shortage of shipping containers, and the complex nature of international trade all play a role in the situation, according to the National Association of Manufacturers (NAM).