Global shipping emissions plan delayed as U.S. opposition grows

A global plan to cut shipping emissions is facing delays and political pressure. The International Maritime Organization (IMO) has pushed back the earliest vote on its Net-Zero Framework until November, a year later than planned. Despite opposition from the U.S., the proposal remains under discussion, with key details still unresolved. The IMO’s framework aims to drive the shipping industry’s carbon emissions down to zero. It proposes charging ships a fee for every ton of greenhouse gases they emit above a certain limit. Around 90% of world trade travels by sea, and the sector currently accounts for roughly 3% of global carbon emissions.

The shipping industry broadly supports the plan, preferring one worldwide rule over a patchwork of regional carbon schemes. However, several critical issues—such as how revenue from the levy would be shared—have yet to be settled. The U.S. has actively opposed the framework. Officials urged member states to drop the proposal entirely. The Trump administration went further, warning countries that backed the plan of possible visa restrictions, tariffs, and extra port fees. Now, the framework’s future hinges on whether a small group of flag states, influenced by the U.S., can block the majority pushing for progress.

The IMO’s Net-Zero Framework remains in play despite American resistance and unresolved details. A vote is now expected in November, though its success depends on overcoming political obstacles. If approved, the levy could become a major tool in reducing emissions from global shipping.