Overturning Chevron Deference Shifted Power From Agencies to the Judiciary

For four decades, when Congress passed a vaguely worded law, federal agencies—from the Environmental Protection Agency to the Department of Health and Human Services—had the power to fill in the blanks. If a dispute over those regulations went to court, judges were required to defer to the agency's reasonable interpretation. That era is over.[5]

In the landmark 2024 decision Loper Bright Enterprises v. Raimondo, the Supreme Court struck down the 1984 precedent known as "Chevron deference." In a 6-3 ruling, the Court declared that the Administrative Procedure Act requires judges to exercise their own independent judgment when interpreting federal statutes, fundamentally altering the balance of power in Washington.[2][4]

The case that toppled the doctrine began with commercial herring fishermen operating off the coast of New England. They challenged a rule by the National Marine Fisheries Service that required them to pay the salaries of federal observers stationed on their boats to monitor overfishing. The fishermen argued the agency lacked the statutory authority to impose the fees.[3]

Under the old Chevron framework, courts evaluating such challenges applied a two-step test. First, they asked if Congress had directly spoken to the precise issue. If the statute was clear, that was the end of the matter. But if the statute was silent or ambiguous, the court moved to step two, deferring to the agency's interpretation as long as it was deemed reasonable.[1][3]

Chief Justice John Roberts, writing for the conservative majority, dismantled this framework. He argued that courts, not agencies, are the ultimate arbiters of statutory meaning. The ruling effectively transferred a massive amount of interpretive power from executive branch experts and bureaucrats to the federal judiciary.[2][4]

The majority opinion concluded that Chevron deference was fundamentally unworkable and conflicted with the Administrative Procedure Act, which directs courts to decide all relevant questions of law. Roberts emphasized that courts may not defer to an agency interpretation simply because a statute is ambiguous.[4]

Justice Elena Kagan, writing for the three dissenting liberal justices, warned that the decision stripped power from both Congress and the executive branch. She argued that agencies possess the technical, scientific, and practical expertise necessary to manage complex modern problems—expertise that generalist judges inherently lack.[2][4]

The decision immediately altered the landscape of administrative law. Litigants challenging environmental regulations, healthcare rules, tax policies, and workplace safety standards gained a powerful new weapon. Without the shield of Chevron deference, agencies face a significantly higher burden to justify their regulatory actions in federal court.[3]

However, the apocalyptic predictions of a completely paralyzed administrative state have not entirely materialized. By the Court's own terms in Loper Bright, judges must still use traditional tools of statutory interpretation neutrally. If the "best" reading of a statute is that Congress intended to delegate discretionary authority to an agency, courts must respect that explicit delegation.[1]

Furthermore, while automatic deference is gone, agencies can still earn "due respect" for their interpretations under an older, lesser standard known as Skidmore deference. An agency's view may still persuade a court, especially when it rests on factual premises within the agency's specialized expertise or reflects a long-standing, consistent interpretation.[1][4]

The ruling has also placed a new, heavy burden on Congress. Lawmakers can no longer rely on broad, ambiguous language with the expectation that agencies will sort out the details after the fact. Drafting legislation now requires greater precision and specificity to ensure that regulatory authority is explicitly granted.[1][5]

Two years after the ruling, the federal government is still adapting to the post-Chevron reality. Agencies are drafting rules more cautiously, building more robust administrative records to survive judicial scrutiny, and lower courts are navigating their expanded role as the final deciders of statutory meaning.[5]