Alex Padilla U.S. Senator for California

WASHINGTON, D.C. — Today, U.S. Senators Alex Padilla (D-Calif.) and Sheldon Whitehouse (D-R.I.), Ranking Member of the Senate Environment and Public Works Committee, introduced a pair of bills to reduce dangerous air pollution within the shipping industry.

Padilla’s Clean Shipping Act of 2025, led by Representative Robert Garcia (D-Calif.-42) in the House, aims to reduce greenhouse gas emissions from the shipping industry to protect the health of port communities and address the environmental injustice impacts of the climate crisis. Padilla also co-leads the International Maritime Pollution Accountability Act, led by Whitehouse in the Senate and Representatives Doris Matsui (D-Calif.-07) and Kevin Mullin (D-Calif.-15) in the House. The bill aims to reduce emissions by imposing a pollution fee on large marine vessels offloading cargo at U.S. ports to fund decarbonization efforts in the U.S. maritime economy.

“California’s ports are the powerhouse of our country’s economy, moving critical freight and providing good-paying jobs, all while leading the nation’s decarbonizing efforts. But neighboring communities have been forced to shoulder the brunt of global shipping pollution for too long,” said Senator Padilla. “Our legislation would strengthen the sustainability of our shipping industry by reducing emissions in maritime transportation while simultaneously protecting coastal communities. The health of our communities and our planet requires us to be forward-looking and ambitious — we owe future generations nothing less than bold, transformative action.”

“As climate change destroys lives and drives up costs for families, we need an all-hands-on-deck approach to avoid the worst consequences for communities, businesses, and the environment,” said Ranking Member Whitehouse. “Encouragingly, the International Maritime Organization (IMO) has put forward a global carbon price on shipping emissions. This legislation reinforces that work, further cutting harmful emissions while supporting the maritime innovators that are pioneering clean technologies to protect public health and can help put us on course to climate safety.”

Globally, maritime shipping is a major source of climate-warming pollution, including climate-warming GHG emissions (carbon dioxide, methane, and nitrous oxide) and harmful air pollutant emissions (oxides of nitrogen, sulfur dioxide, and fine particulate matter). According to the International Maritime Organization 2020 GHG Study, the global shipping industry emits approximately one billion tons of GHG emissions per year, roughly 3 percent of total anthropogenic global-warming carbon-dioxide emissions. The study projects in future scenarios that shipping’s GHG emissions could more than double between 2018 and 2050. These emissions are not only harmful for the environment, but jeopardize the air quality and public health of the nearly 40 percent of Americans who live within three miles of a port.

Clean Shipping Act

The Clean Shipping Act of 2025 would set a path to eliminate greenhouse gas emissions from all ocean shipping companies that do business with the United States. It would direct the Environmental Protection Agency (EPA) to set progressively tighter carbon intensity standards for fuels used by ships in order to reduce greenhouse gas emissions by 2050, consistent with the goals of the Paris Agreement to limit warming to 1.5 degrees Celsius.

Specifically, the bill would direct the EPA to:

• Set carbon intensity standards for fuels used by ships. The bill sets progressively tighter carbon intensity standards for fuels used by ships consistent with a 1.5°C decarbonization pathway. These standards would require lifecycle carbon dioxide-equivalent reductions of 30 percent from January 1, 2030, 58 percent from January 1, 2034, 83 percent from January 1, 2040, 92 percent from January 1, 2045, and 100 percent from January 1, 2050 (based on a 2027 baseline).

• Set requirements to eliminate in-port ship emissions by 2035. By January 1, 2035, all ships at-berth or at-anchor in U.S. ports would emit zero GHG emissions and zero air pollutant emissions.

“Our nation’s ports, particularly the Port of Long Beach, are crucial parts of the economy that drive our supply chain at home. However, they’re also among the largest sources of pollution in our coastal communities,” said Representative Garcia. “Ship pollution is harmful for the health of people living near ports, and disproportionately affects low-income, working-class neighborhoods and communities of color. That’s why I’m proud to introduce a bill that addresses greenhouse gas pollution and creates a path to fully eliminate emissions. We must protect people’s health and stop our climate crisis, while ensuring good-paying jobs for the future.”

“In order to protect our ocean and stay competitive with the rest of the world, we need federal leadership to help modernize and clean up U.S. shipping. By driving the shipping sector to develop, scale and deploy zero-emission technologies, we can spur job creation, help tackle the climate crisis and help create cleaner air for the millions of Americans living near ports. We commend Representative Garcia and Senator Padilla for their leadership on this issue and look forward to working with members of Congress to make this bill a reality,” said Caroline Bonfield, Ocean Conservancy’s Shipping Emissions U.S. Policy Manager.

“The shipping industry has been polluting communities for decades, but we have the power to make shipping cleaner. Port expansions across the country have been especially devastating for communities living closest to the harbors where large ships spew toxic diesel exhaust that worsens air quality and contributes to the climate crisis. People living near ports deserve to breathe clean air, and the Clean Shipping Act will help make that a reality,” said Katherine García, Director of the Clean Transportation for All Campaign, Sierra Club.

“GreenLatinos endorses the urgently needed Clean Shipping Act, which protects Latino/e and other vulnerable communities from further exposure to port pollution and takes important steps to reduce harm from toxic ship fuels. 1 in 3 Latines live in the top 20% of most pollution-impacted communities. Pollution burdened communities are facing even more exposure as idling ships wait days to enter port and offload their cargo. We urge Congress to act swiftly in passing this vital legislation and protect our coastal communities from the harms of port emissions,” said Andrea Marpillero-Colomina, Policy Advisor, GreenLatinos.

“The Clean Shipping Act of 2025 will help us work toward a future where healthy port communities thrive and everyone benefits from leveraging the tremendous potential of the ocean and ocean industries as powerful sources of climate solutions. We are grateful for the leadership of Congressman Garcia and Senator Padilla for advancing this legislation for our ocean, climate, and communities,” said Sarah Guy, Executive Director, Ocean Defense Initiative.

“The Clean Shipping Act of 2025 will send a clear signal to the shipping industry that they must reduce their emissions by phasing out the use of fossil fuels and transition to a cleaner future. Technology-forcing policies like this legislation will enable large-scale investment in sustainable maritime fuels and technologies and establish a level playing field, minimizing the risk for manufacturers and suppliers. For far too long, dirty ships have brought significant levels of air pollution into U.S. port communities. We commend Representative Garcia and Senator Padilla for reintroducing this important bill and leading the effort to help protect communities disproportionately impacted by these harmful emissions,” said Antonio Santos, Federal Climate Policy Director, Pacific Environment.

The bill is supported by industry leaders including ABB, Evolve Hydrogen Inc., Maritime Battery Forum, and Zero Emissions Ship Technology Association, as well as NGOs including Breathe Southern California, CleanEarth4Kids.org, Don’t Waste Arizona, Environmental, Investigation Agency, Friends of the Earth, GreenLatinos, Intheshadowofthewolf, Long Beach Alliance for Clean Energy, Milwaukee Riverkeeper, Ocean Conservancy, Ocean Defense Initiative, Pacific Environment, Restoring Earth Connection, San Pedro & Peninsula Homeowners Coalition, Seattle Cruise Control, Sierra Club, Sunflower Alliance, 350 Bay Area Action, 350 Sacramento, Turtle Island Restoration Network, and Washington Physicians for Social Responsibility.

Full text of the bill is available here.

International Maritime Pollution Accountability Act

The International Maritime Pollution Accountability Act would:

• Impose a pollution fee on the largest marine vessels offloading cargo at U.S. ports, driving industry-wide decarbonization efforts and incentivizing the use and development of cleaner maritime fuels. 

• Levy a $150 per ton fee on the carbon emissions of fuel burned on an inbound trip, as well as fees for the nitrogen oxides ($6.30/lb.), sulfur dioxide ($18/lb.), and particle pollution (PM2.5) ($38.90/lb.) that ships emit.  The fees would apply only to those ships with 5,000 gross tonnage or more, excluding most of the domestic industry, and the fee on carbon emissions would sunset if the IMO implemented and enforced a fee on the greenhouse gas emissions of marine shipping that was equal to or greater than the $150 per ton fee levied in the bill.

• Provide critical funding to modernize the Jones Act fleet with low-carbon vessels, revitalizing and electrifying U.S. shipbuilding, and addressing and reducing pollutants in America’s port communities, along our coasts, and in our oceans.

The International Maritime Pollution Accountability Act has been endorsed by EV Maritime, Friends of the Earth, GreenLatinos, Ocean Conservancy, Pacific Environment, San Pedro & Peninsula Homeowners Coalition, Sierra Club, 350 Bay Area Action, and 350 Brooklyn.

Senators Martin Heinrich (D-N.M.) and Peter Welch (D-Vt.) are cosponsoring the legislation. 

Full text of the International Maritime Pollution Accountability Act is available here, and a one-pager is available here. 

Senator Padilla believes decarbonizing our ports is vital for powering economic growth and protecting public health. Last year, he announced over $1 billion in EPA funding across seven California ports to build zero-emission port infrastructure and implement climate and air quality management plans. The funding comes through the Clean Ports Program, which is funded by the Inflation Reduction Act and aims to reduce harmful greenhouse gas emissions and improve air quality at ports across the nation. California ports will receive three of the largest seven grants nationwide, including over $411 million for the Port of Los Angeles, the biggest award in the country. In 2023, he announced $74.5 million from the Department of Transportation Maritime Administration to decarbonize, upgrade, and rehabilitate key ports along California’s coast.

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