Alexander Apostolopoulos: Supreme Court Ruling Impact on Federal Agencies

Alexander Apostolopoulos is a New York City based tax attorney with nearly 15 years of experience advising public and private companies on complex, high value transactions. A graduate of Yale College and Harvard Law School, he has represented clients in acquisitions, dispositions, IPOs, and spin offs, with a focus on optimizing tax structures and drafting transactional documentation. Alexander Apostolopoulos previously practiced at Sullivan & Cromwell before serving as a partner at a major US based multinational law firm, where he advised on significant transactions involving companies such as Enfusion Inc., Cano Health LLC, and Ritchie Bros. His experience addressing statutory interpretation, regulatory frameworks, and transactional risk provides perspective on how recent Supreme Court decisions affecting agency authority may influence federal oversight and compliance considerations for businesses.

Supreme Court Ruling Could Change for Federal Agencies

Several US Supreme Court cases are testing the extent of federal agencies’ authority to interpret and apply federal statutes. Lawyers often call this issue “agency deference,” meaning whether judges should lean toward an agency’s interpretation when a law is unclear. For regulated organizations, the outcomes can reshape the writing, challenges, and application of laws.

At the center of that shift is Chevron deference, a framework from a 1984 Supreme Court case. For decades, courts often upheld an agency’s reasonable reading of an ambiguous statute when Congress had not spoken clearly. The Court rejected that approach in 2024, directing courts to supply the best reading of the law rather than defaulting to the agency’s view.

That change matters because many statutes set broad goals and leave agencies to work out technical details through rules, guidance, and enforcement choices. With less deference, judges may scrutinize those translations more directly and may be more willing to reject an agency’s statutory reading. That can change how agencies draft rules and how regulated parties evaluate legal risk.

Less deference also makes the landscape feel less settled, even when a rule has been in place for years. If different judges interpret the same statute differently, a regulation may receive inconsistent treatment across courts until the Supreme Court resolves the conflict. For national organizations, that split makes it harder to treat any single interpretation as the baseline.

A second set of disputes concerns independent agencies and whether the President may remove officials with statutory “for-cause” protections. One prominent case, Trump v. Slaughter, involves the attempted removal of a Federal Trade Commission commissioner and asks whether long-standing limits on presidential removal power should be narrowed or overturned. If the Court weakens those protections, independent agencies could become more directly shaped by presidential control.

Procedure can matter as much as doctrine. The Court has increasingly relied on fast-moving emergency orders, often called the “shadow docket,” meaning the Court’s emergency docket for rapid rulings without the full merits process, to pause, reinstate, or reshape government action. At the same time, a case continues in lower courts. Because these orders can arrive quickly and sometimes provide limited explanation, regulated parties can face abrupt shifts in which the applicable policy changes over the course of litigation.

Even with stronger judicial scrutiny, agencies do not operate without their own guardrails. Administrative-law doctrine still emphasizes that agencies must act within statutory boundaries and provide reasoned, contemporaneous explanations for major decisions. When an agency changes course, it often must acknowledge the prior approach and justify the shift in a way that addresses reliance interests and the real-world consequences of the change.

For organizations planning, the most useful takeaway is operational, not ideological. Court review now turns more heavily on statutory text and on whether an agency’s record shows a reasoned decision that a judge can test. That makes it more important to understand what a rule requires and to set out its statutory basis and a reasoned explanation.

Congress remains the actor that can narrow statutory ambiguity by rewriting the text with clearer instructions. Until lawmakers do that, agencies must tie major rules more tightly to statutory language and explain their reasoning in a way a court can test directly. In that environment, the most durable advantage comes from knowing which specific statutory phrases each critical rule relies on and which pending cases could alter how judges interpret them.

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About Alexander Apostolopoulos

Alexander Apostolopoulos is a New York based tax attorney and alumnus of Yale College and Harvard Law School. Over nearly 15 years in practice, he has advised public and private companies on acquisitions, IPOs, mergers, and spin offs, with an emphasis on structuring transactions and drafting governing documents. He previously worked at Sullivan & Cromwell and later served as a partner at a major multinational law firm. He is a member of the New York State Bar Association.