The United States has rejected a United Nations plan to achieve net-zero emissions in the global shipping industry by 2050, warning it could impose trade retaliation on countries backing the […]

The United States has rejected a United Nations plan to achieve net-zero emissions in the global shipping industry by 2050, warning it could impose trade retaliation on countries backing the proposal. The initiative, advanced under the International Maritime Organization (IMO), is intended to align maritime emissions targets with global climate commitments, but Washington argues it risks harming economic competitiveness and disrupting supply chains [1][2].

US officials have raised concerns over enforcement tools such as carbon levies and strict emissions standards, claiming they could disproportionately impact American shipping interests while increasing consumer costs. They caution that the measures may advantage nations outside the agreement and penalize US-based operators [1].

The IMO’s net-zero target has received strong support from a coalition of European and Pacific Island states, which say it is essential for limiting global warming and protecting vulnerable coastal communities. Advocates point out that shipping accounts for about 3% of global greenhouse gas emissions, making it a significant sector for decarbonization [2].

However, the US warning of retaliatory tariffs or maritime trade restrictions against pro-plan nations has sparked fears of geopolitical friction within the shipping industry. Critics argue the move risks undermining international climate cooperation at a time when momentum toward low-carbon fuels is critical [1][2].

The standoff highlights the challenge of balancing climate ambition with economic priorities in global shipping policy. As the IMO moves into further negotiations, industry players face uncertainty over regulatory alignment and potential trade conflicts, raising questions about how quickly the sector can transition toward a zero-emissions future.

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[1] Channel News Asia. (2025, Aug 12). US rejects UN shipping net-zero plan, warns retaliation against supporters. https://www.channelnewsasia.com/world/us-rejects-un-shipping-net-zero-plan-warns-retaliation-against-supporters-5291371

[2] Reuters. (2025, Aug 12). US to retaliate against IMO members that back net-zero emissions plan. https://www.reuters.com/sustainability/climate-energy/us-retaliate-against-imo-members-that-back-net-zero-emissions-plan-2025-08-12/