 After more than three and a half hours of oral argument in January, it seemed unlikely that the rule outlined in that case, known as the Chevron Doctrine, will survive in its current form. The majority of the justices seem ready to jettison the doctrine, or at the very least, significantly limit it. You see what they're doing to automobiles, you're seeing this. This would affect that. The court's ruling could have ripple effects across the federal government.