The move is part of an intensified effort to pressure Cuba’s government by choking off energy fuel shipments amid its worsening energy crisis.
The threat escalates tensions between the U.S. and countries like Mexico that have historically supported Cuba with oil, raising diplomatic and economic stakes across the region.
The tariff threat comes amid broader U.S. efforts in Latin America tied to sanctions and pressure against Cuba and Venezuela — intertwining humanitarian concerns with economic and security policy.