The US Supreme Court issued its decision on June 17 in the case of Virginia Uranium, Inc. v. Warren. The Court affirmed the decision of the US Court of Appeals for the Fourth Circuit, which held that the Atomic Energy Act does not preempt Virginia’s statutory prohibition on uranium mining. This decision is important to the nuclear industry because it considers the extent to which state and local governments may insert themselves into the field of radiological safety by enacting “bottleneck” laws purporting to regulate antecedent activities.