US Threatens Sanctions, Visa Bans Over UN Shipping Emissions Plan

The United States has warned it may impose sanctions, visa restrictions, and trade penalties on countries that vote for a United Nations plan to cut carbon emissions from global shipping. The proposal, set for a vote next week at the International Maritime Organization (IMO), aims to establish a Net-Zero Framework for international shipping, which accounts for nearly 3% of global greenhouse gas emissions.

In a joint statement, U.S. Secretary of State Marco Rubio, Energy Secretary Chris Wright, and Transportation Secretary Sean Duffy condemned the plan, calling it an “unsanctioned global tax regime” that would drive up costs for “American citizens, energy providers, and shipping companies.”

Supporters of the IMO framework, including several major container carriers, argue that global regulation is essential to prevent a patchwork of national rules that could slow the industry’s decarbonization efforts. However, oil tanker companies have voiced “grave concerns” about the economic impact.

U.S. officials warned that countries backing the proposal could face blocked port access, new fees, and sanctions on government officials linked to “activist-driven climate policies.” The move underscores Washington’s sharp departure from international climate cooperation.

US opposition to the IMO Net-Zero Framework - including threats of sanctions and visa restrictions on countries voting in favour - represents a significant departure from established multilateral climate cooperation norms. For countries evaluating their votes, the trade-off between US pressure and the practical need for coordinated global shipping emissions rules is real: fragmented national approaches would create major operational complexity for the shipping sector.

Major container carriers' support for global regulation reflects the sector's preference for regulatory certainty over patchwork national rules. Oil tanker companies' concerns about economic impact reflect the specific commodity dynamics of their trade. The vote outcome will materially shape whether shipping decarbonisation proceeds via coordinated global framework or fragmented national action.

For shipping lines, port operators, fuel producers, cargo owners and their financial and legal advisors, Cognitud's climate action, supply chain and operations and market intelligence teams help clients evaluate exposure to different IMO framework outcomes, structure fuel-supply and operational strategies robust across scenarios, and prepare disclosures aligned with IMO, CDP Transport and jurisdictional maritime-sustainability frameworks that increasingly influence cargo-owner and financier decisions.