 Lower court sided with the federal government, citing a 1984 decision known as Chevron. Chevron says if regulations were left fuzzy or unclear by Congress, then things can be left up to the federal agency to interpret and enforce the rules. In a six to three decision, though, the Supreme Court ruling overturns Chevron. A Biden administration attorney had warned that such a move would be a shock to the legal system. Chevron opponents argued that judges have applied Chevron far too often to just rubber stamp decisions made by government bureaucrats.