If you are thinking of the ruling overturning the Chevron doctrine, that's not what it said. What it said is that courts do not have to defer to the agency's interpretation of an ambiguous statute. The court can make and use apply its own interpretation.
Under Chevron courts were to defer to agency interpretations if the statute was ambiguous and the agency's interpretation was reasonable.
Here is an article that (1) lambasts the 2023 Sackett ruling that a swampy back yard is actually not a navigable waterway; and (2) says that that decision teed up the 2024 Loper decision that got all the headlines: https://minnesotalawreview.org/wp-content/uploads/2025/06/6R... , section starting at the page numbered 2863.
Under Chevron courts were to defer to agency interpretations if the statute was ambiguous and the agency's interpretation was reasonable.