Ultimately, consumers can feel the impact.
A California Rule With a National Price Tag
California adopted its Ocean-Going Vessels At-Berth Regulation in 2007, with compliance requirements phased in over subsequent years. The rules are designed to reduce emissions from ships while they are docked, requiring regulated vessels to use shore power or meet specified emissions-reduction requirements through other approved methods.
The California Air Resources Board says the regulation is intended to reduce diesel particulate matter and nitrogen oxides from auxiliary engines. The agency has also documented major enforcement cases involving international shipping companies.
One of the most striking examples involved Wan Hai Lines.
In 2022, CARB announced a $680,750 settlement after an audit found violations involving the company’s fleet at the Los Angeles and Long Beach ports. According to the agency, the violations involved failure to meet required power-reduction and operational standards.
Another major case involved Mediterranean Shipping Company. MSC paid $630,625 after CARB found more than 2,500 violations connected to visits to the Port of Oakland and the Los Angeles/Long Beach complex.
These cases illustrate the economic pressure created when shipping companies must comply with increasingly demanding port requirements.
And shipping companies do not operate in a vacuum.
Their expenses become part of the cost of doing business.
Who Ultimately Pays?
Consider what passes through California’s ports every day.
Consumer products. Industrial equipment. Food. Retail inventory. Electronics. Automobile components. Fuel and countless other goods depend on an enormous maritime supply chain.
That means a regulation affecting shipping costs can have consequences well beyond the California coastline.
As Rep. Vince Fong has argued, the impact reaches ordinary Americans through the products they purchase and the businesses they patronize.
“When you order something on Amazon, when a small business is buying product to put products on their shelves, when grocery stores are trying to get products into the stores, when you’re trying to buy gasoline – all of those things come through either the port, or it comes through some type of mechanism through a ship,” Fong said.
That is the central issue in the congressional fight.
California officials may view the regulation primarily as an environmental measure. But opponents see something larger: a state government imposing requirements on a critical piece of the national supply chain and potentially shifting the resulting costs onto consumers across the country.
The Biden-Era Waiver Comes Under the Microscope
The federal government’s role is crucial because California requires special authority under the Clean Air Act to enforce certain emissions standards that would otherwise be preempted by federal law.
EPA explains that California must receive a federal waiver before certain state standards can be enforced, making the federal approval process a key part of the dispute.
During the Biden administration, the federal government granted California a series of waivers.
The Trump administration has now taken a dramatically different approach.
In July, EPA Administrator Lee Zeldin announced that the agency had transmitted two additional California waiver rules to Congress. One of them specifically covers the Ocean-Going Vessels At Berth rule. EPA said the previous administration had failed to transmit the waiver rules to Congress as required under the Congressional Review Act.
“EPA is once again fulfilling our statutory obligation to submit California waiver rules to Congress. This is what the law requires, and it is our obligation to the American people to follow the best reading of the law every single time,” Zeldin said.
The EPA did not mince words about the potential consequences.
The agency said the California vessel waiver imposes stringent port-electrification requirements that can increase shipping costs, strain port infrastructure and create additional pressure throughout the national supply chain.
That makes the congressional review more than a bureaucratic exercise.
It is a battle over who gets to set the rules for America’s supply chain.
Washington Is Finally Getting a Say
The Congressional Review Act gives lawmakers a mechanism to review certain federal rules and regulations.
That mechanism is now being brought into the California port fight.
Fong and Sen. Dan Sullivan of Alaska are pushing legislation aimed at challenging California’s authority to enforce the controversial maritime requirements.
The political stakes are obvious.
A mandate adopted in Sacramento can affect companies operating thousands of miles away. Those companies can then adjust prices, shipping strategies and investment decisions in response.
Supporters of California’s policy argue that stricter emissions requirements are necessary to improve air quality and reduce pollution around heavily trafficked ports. CARB has repeatedly defended the At-Berth Regulation on those grounds, saying reductions in ship emissions benefit communities near ports.
But critics are asking a different question:
How much should Americans outside California be required to pay for California’s environmental policies?
The Bigger Fight Is About Precedent
This dispute could ultimately matter far beyond Los Angeles and Long Beach.
California has become a national laboratory for aggressive environmental regulation. When federal waivers allow the state to establish standards affecting industries that operate throughout the national economy, the consequences can spread well beyond California’s borders.
That is why the shipping issue has attracted attention in Washington.
The question is not simply whether California should pursue cleaner ports. The question is whether one state should be able to impose regulatory costs on a national supply chain without those costs being subjected to meaningful federal scrutiny.
For consumers already dealing with elevated prices, every additional cost matters.
Shipping companies pay penalties and spend money upgrading equipment. Importers pay freight and compliance costs. Retailers absorb higher expenses. Small businesses face increased costs getting inventory onto their shelves.
Eventually, some portion of that bill can reach the customer.
California may write the regulation.
But Americans across the country can end up paying the price.
Now Congress has the opportunity to decide whether that arrangement should continue.
And with the Trump administration formally putting the maritime waiver before lawmakers, the battle over California’s regulatory reach has entered a new phase.
