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Congress resumes push to cut US shipping pollution

  • Market: Oil products
  • 11/07/25

US lawmakers reintroduced two bills Thursday to slash greenhouse gas emissions from the shipping industry.

Senators Sheldon Whitehouse (D-Rhode Island) and Alex Padilla (D-California), along with US House of Representatives members Doris Matsui (D-California) and Kevin Mullin (D-California), reintroduced the International Maritime Pollution Accountability Act, which would impose pollution fees on large ships calling at US ports. The bill targets vessels over 5,000 gross tonnes with a $150/t fee on carbon, plus fees on nitrogen oxides at $6.30/lb, sulfur dioxide at $18/lb, and fine particulate matter at $38.90/lb. Ship operators would only pay the carbon fee if no equivalent global measure from the International Maritime Organization (IMO) is in place.

Revenue would go toward modernizing the Jones Act fleet with low-emission ships, electrifying shipbuilding, and addressing pollution at US ports.

The group also reintroduced the Clean Shipping Act of 2025, led in the House by Representatives Robert Garcia (D-California). It directs the Environmental Protection Agency to impose carbon intensity standards for marine fuels, targeting 30pc lifecycle CO2-equivalent emissions reduction from 2030, 58pc from 2034, 83pc from 2040, and 100pc from 2050. It also requires all ships at berth or anchor in US ports to emit zero emissions by 2035.

The lawmakers say the proposed bills also close a major loophole. Marine shipping is largely exempt from fuel taxes unlike other transport sectors. They say the plan will also support US manufacturing and help reduce the US trade deficit.

The International Maritime Pollution Accountability Act is endorsed by environmental and advocacy groups including Friends of the Earth, Sierra Club and Ocean Conservancy, among others.

The original bills were introduced in 2023 and expired without being enacted.

The bills follow the IMO's decision in April to adopt a net-zero framework and a global carbon price proposal for shipping. The US delegation was absent from IMO's April meeting, issuing a statement that "President Trump has made it clear that the US will not accept any international environmental agreement that unduly or unfairly burdens the US or the interests of the American people."


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