What the Chevron ruling means for the next US president

That is because the court’s conservative 6-3 majority used the case to strike a mighty blow against the American administrative state. Its ruling on June 28th eliminated a precedent called “Chevron deference”, named after a landmark case from 1984, that instructs courts to defer to federal agencies when their authority is left ambiguous by a law (as it frequently is). For decades, Chevron justified countless rules and regulations; under it, agencies and bureaucrats in charge of environmental, labour and financial matters made expansive use of the vague authorities delegated to them by Congress.