The US Supreme Court dealt a major blow to federal regulatory power on Friday by overturning a 1984 precedent that had given deference to government agencies in interpreting laws they administer, handing a defeat to President Joe Biden’s administration.

The justices ruled 6-3 to set aside lower courts rulings against fishing companies that challenged a government-run program partially funded by industry that monitored overfishing of herring off New England’s coast.

It marked the latest decision in recent years powered by the Supreme Court’s conservative majority that hemmed in the authority of federal agencies.

The precedent that the court overturned arose from a ruling involving oil company Chevron that had called for judges to defer to reasonable federal agency interpretations of US laws deemed to be ambiguous. This doctrine, long opposed by conservatives and business interests, was called “Chevron deference.”

“Chevron is overruled. Courts must exercise their independent judgment in deciding whether an agency has acted within its statutory authority,” conservative Chief Justice John Roberts wrote in the ruling.

The court’s conservative justices were in the majority, with the liberal justices dissenting.

The decreasing productivity of Congress – thanks to its gaping partisan divide – has led to a growing reliance, especially by Democratic presidents, on rules issued by US agencies to realize regulatory goals.

Democratic President Joe Biden’s administration had defended the National Marine Fisheries Service regulation at issue and the Chevron deference doctrine. The fish conservation program was started in 2020 under Republican former President Donald Trump.

Liberal Justice Elena Kagan criticized the ruling, saying it once again elevates the Supreme Court’s power over other branches of the US government.

“A rule of judicial humility gives way to a rule of judicial hubris. In recent years, this court has too often taken for itself the decision-making authority Congress assigned to agencies,” Kagan wrote.

The bid by the fishermen was supported by various conservative and corporate interest groups including billionaire Charles Koch’s network. The litigation is part of what has been termed the “war on the administrative state,” an effort to weaken the federal agency bureaucracy that interprets laws, crafts federal rules and implements executive action.

Also read | What it means for the Supreme Court to throw out Chevron decision, undercutting federal regulators

The backdrop

Kagan wrote: “Who should give content to a statute when Congress’s instructions have run out? Should it be a court? Or should it be the agency Congress has charged with administering the statute? The answer Chevron gives is that it should usually be the agency. , within the bounds of reasonableness.”

“That rule has formed the backdrop against which Congress, courts, and agencies – as well as regulated parties and the public – have all operated for decades.

It has been applied in thousands of judicial decisions. It has become part of the warp and woof of modern government, supporting regulatory efforts of all kinds – to name a few, keeping air and water clean, food and drugs safe, and financial markets honest,” Kagan added.

The regulation called for certain commercial fishermen to carry aboard their vessels US government contractors and pay for their at-sea services while they monitored the catch.

The companies – led by New Jersey-based Loper Bright Enterprises and Rhode Island-based Relentless Inc – in 2020 sued the fisheries service, claiming the monitoring program exceeded the Commerce Department agency’s authority.

The Supreme Court, with its 6-3 conservative majority, has signaled skepticism towards expansive regulatory power, issuing rulings in recent years to rein in what its conservative justices have viewed as overreach by the Environmental Protection Agency and other agencies.

House of Representatives Judiciary Committee top Democrat said, “Today’s decision provides yet more proof that the far-right supermajority on the Supreme Court will cast aside whatever precedent it wants in its quest to increase its own power and that of its MAGA (Make American Great allies across the country.”

The fish conservation program aimed to monitor 50 percent of declared herring fishing trips in the regulated area, with program costs split between the federal government and the fishing industry.

The cost to commercial fishermen of paying for the monitoring was an estimated $710 per day for 19 days a year, which could reduce a vessel’s income by up to 20 percent, according to government figures.

The Biden administration said the program was authorized under a 1976 federal law called the Magnuson-Stevens Act to protect against overfishing in US coastal waters.

It said in court papers the program was suspended for the fishing year starting in April 2023 due to insufficient federal funding.

The Washington-based US Court of Appeals for the District of Columbia Circuit and the Boston-based 1st US Circuit Court of Appeals both ruled in favor of the government.

The Biden administration said Chevron deference among other things “gives due weight to the expertise that agencies bring to bear” and promotes national uniformity in the administration of federal law.

Also read | US Supreme Court ruling curbing agency powers could hobble labor board

An attorney for the commercial fishermen said Chevron deference “incentivizes a dynamic where Congress does far less than the Framers (of the US Constitution) anticipated, and the executive branch is left to do far more by deciding controversial issues via regulatory fiat.”

The Supreme Court has issued other rulings this term involving the scope of agency powers, including two rulings on Thursday. It rejected the Securities and Exchange Commission’s in-house enforcement of laws protecting investors against securities fraud.

It also blocked an Environmental Protection Agency regulation aimed at reducing ozone emissions that may worsen air pollution in neighboring states.

The justices on May 16 upheld the Consumer Financial Protection Bureau’s funding mechanism in a challenge brought by the payday loan industry.