Thirteen ships are at anchor in San Pedro Harbor including eight containerships.
The port says it is not suffering from a shortage of chassis.
U.S. Federal Maritime commissioner has asked the commission chairman to review the rapid approval of the alliance.
A congressional watchdog agency said the Agency for International Development could do more to assist AGOA countries develop export strategies.
Arkansas-based intermodal carrier sees growth in all divisions, aided by lower fuel prices, but offset by increased costs in hiring and retaining drivers.
Railroad sees increased volumes in nearly all commodity groups.