Regular box services to Ukraine started in April when the Ukrainian transport and logistics firm Iteris Feeders launched a service between Constanta and Chornomorsk.
The tariffs are seen as a protective measure for the Mexican textile industry, and a way to reduce imports from China, potentially avoiding trade conflicts with the U.S.
Biden announced his decision following a lengthy national security review into the deal, led by the Committee on Foreign Investment in the United States.
The planned talks are a welcome sign for importers and exporters bracing for a labor disruption that would shut every major port on the U.S. East and Gulf coasts.