The United States Maritime Alliance, Ltd. (USMX) represents employers of the East and Gulf Coast longshore industry. Membership consists of Container Carriers, including the largest carriers and carrier alliances worldwide, all major Marine Terminal Operators, and Port Associations representing each port on the East and Gulf Coasts. USMX’s members are responsible for the transportation and handling of cargo shipped to and from the United States. While serving as the representative of the Management groups in Master Contract bargaining, the Alliance also articulates industry positions on regulatory and safety issues; oversees coastwide training, retraining, certification, and recertification programs; and is responsible for administering coastwide fringe benefit funds and programs.

As of April 17, 2025, the non-profit, incorporated membership association headquartered in Lyndhurst, New Jersey is led by its new CEO & Chairman, F. Paul De Maria.

Since 1977, USMX and its predecessor organizations have successfully negotiated 12 Master Contracts with the International Longshoremen’s Association (ILA). On March 11, 2025, USMX and the ILA signed a Memorandum of Settlement for a new 6-year Master Contract agreement covering all ILA port workers on the U.S. East and Gulf Coasts. The new Master Contract commenced October 1, 2024 and will run through September 30, 2030.