PolicyBrief
H.RES. 812
119th CongressOct 17th 2025
Condemning the United Nations and International Maritime Organization for proposing a global tax on shipping emissions, threatening United States sovereignty, trade, and economic interests.
IN COMMITTEE

This resolution condemns the UN and IMO for proposing a global shipping tax, asserting that such a measure threatens U.S. sovereignty, trade, and economic interests.

Andy Biggs
R

Andy Biggs

Representative

AZ-5

LEGISLATION

Congress Rejects Global Shipping Tax, Threatens Tariffs Against UN Climate Plan

This resolution is Congress basically sending a strongly worded memo to the rest of the world—and the White House—saying the U.S. is not on board with a potential global tax on shipping emissions being debated by the International Maritime Organization (IMO), which is part of the UN. The core of this resolution is simple: the U.S. will oppose any international effort to slap a fee or tax on American ships and trade without Congress voting on it first. They see this proposed system as an international tax grab that violates the principle of “no taxation without representation,” because the costs would hit American businesses and consumers, but the decision would be made by an international body.

The Cost of Moving Stuff

Congress’s main worry is the economic ripple effect. If the IMO imposes a carbon tax on global shipping, the cost of moving everything—from the components for your laptop to the clothes you buy and the food you eat—goes up. That extra cost doesn't just disappear; it gets passed down to the consumer. For the average person, this means higher prices at the store and potentially higher costs for American companies trying to export goods, making them less competitive globally. This resolution is an attempt to keep the cost of goods stable by blocking a new layer of international fees. They are trying to protect U.S. shipping companies and exporters from having to pay new, non-Congressionally approved taxes.

Sovereignty vs. Global Climate Action

This resolution sets up a clear boundary: the U.S. will not cede its authority to tax or regulate trade to any international organization. It specifically directs the President to instruct U.S. representatives at the IMO to vote against any global emissions tax proposal. This is a definitive statement prioritizing national sovereignty over participating in a multilateral climate finance mechanism. While the goal is to protect U.S. businesses from new taxes, the flip side is that it actively blocks a mechanism designed to fund the decarbonization of the massive global shipping industry, which contributes significantly to climate change.

The Escalation Clause

Here’s where things get interesting—and potentially complicated. The resolution doesn't just say "no"; it suggests the U.S. should consider countermeasures. It urges the administration to look into imposing tariffs or restrictions against any country or group that tries to enforce or profit from such a global tax on American trade. Think of it as a warning shot: if the IMO moves forward with the tax, the U.S. might retaliate with trade penalties against countries that implement it. While this move is intended to protect U.S. interests, escalating a policy disagreement into a trade dispute carries significant risk. Unilateral tariffs can lead to retaliatory tariffs, which could end up hurting the very U.S. exporters and consumers the resolution aims to protect by disrupting global supply chains and increasing trade uncertainty.