Cranes, ports in the Americas don't have cranes with the reach to unload the wide ship. Some EU and Asian cranes had to be replaced and their teams retrained, but US port technology lags significantly behind Europe's and Asia's. The two unions representing dockworkers have fought to minimize automation which means more time in port which makes it less attractive to the ship companies. Progress is being though made and hopefully US can catch up in the next few years.