During his tenure as president, Donald Trump sought to significantly diminish the power of the administrative state. His chief strategist at the time, Steve Bannon, pledged a daily effort to dismantle it. Now, with Trump campaigning for a second term, his vision may materialize as two Supreme Court justices appointed by him are poised to potentially overturn a 40-year-old precedent that fundamentally underpins the authority of the administrative branch.

　　The Chevron doctrine, established in a unanimous 1984 Supreme Court ruling, has been instrumental in empowering federal agencies to implement laws when statutory language is ambiguous. For four decades, this principle has guided U.S. law across numerous sectors, including food and drug safety, environmental protection, and more. In essence, Chevron allows federal agencies and their experts to interpret unclear legislation reasonably as long as the interpretation is justifiable.

　　On Wednesday, conservative Supreme Court justices expressed support for abolishing this legal principle, which could have major implications on the government's ability to enforce regulations. Justices Neil Gorsuch and Brett Kavanaugh, both appointed by Trump, led the charge during oral arguments in two cases brought forth by commercial fishermen challenging a fee requirement.

　　Despite Chief Justice John Roberts and Justice Amy Coney Barrett, another Trump appointee, expressing concerns about potential repercussions, such as a flood of litigation against existing regulations, Gorsuch and Kavanaugh contended that Chevron enables regulatory upheaval every time there's a change in administration. The ultimate outcome could hinge on the stance taken by these key justices.

　　Liberal justices appeared to favor maintaining the Chevron decision, emphasizing that it allows for necessary flexibility given the complexity and pace of technological advancements. They warned that discarding Chevron could lead courts to overstep into legislative territory, effectively becoming "uber-legislators," thereby disrupting the balance of powers and potentially encouraging judges to rule based on personal policy preferences rather than strict legal interpretations.

　　Conservative-majority Supreme Court in recent years has shown skepticism towards the powers of federal agencies, questioning Chevron in several instances without explicitly overturning it. If the doctrine were to be discarded or curtailed, it could significantly impact various regulatory domains, ranging from climate change policies to consumer protection and financial regulation. A final decision from the court is anticipated by early summer.