Effective immediately Long Beach is allowing cargo to be stacked up to 4 containers high at container lots across the city. And up to 5 containers with safety approvals. Previously 2 had been the limit. This is a temporary move to address our national supply chain emergency.— Robert Garcia (@RobertGarcia) October 22, 2021
Previous limit was 2. Most international ports allow 8-10.
Also the labor unions are state controlled so there is no pushback except for wildcatting