Virginia Uranium, Inc. v. Warren
The Supreme Court ruled that Virginia's ban on uranium mining is not preempted by the federal Atomic Energy Act, because Congress never gave the Nuclear Regulatory Commission authority over mining itself — only over what happens to uranium after it comes out of the ground.
The justices splintered over why, producing three separate opinions, but six of them agreed the state ban can stand. The ruling means states keep control over mining on private land even when their reasons for banning it might touch on nuclear safety concerns that Congress assigned to a federal agency.
How it got here: A federal trial court dismissed the company's suit, the Fourth Circuit affirmed, and the company asked the Supreme Court to resolve a split among circuits.
The Case in Depth
What happened
A mining company wanted to extract raw uranium ore from a deposit near Coles Hill, Virginia, mill it into a usable form, and store the leftover radioactive waste nearby. But Virginia law has banned uranium mining since the 1980s. The company sued, arguing that the federal Atomic Energy Act's grant of authority to the Nuclear Regulatory Commission over nuclear materials preempted the state's mining ban.
The question before the Court
Does a federal law giving a nuclear safety agency control over uranium processing also stop Virginia from banning uranium mining on private land?
The Court's answer
No — the Court ruled that the federal Atomic Energy Act does not preempt Virginia's ban on uranium mining, because Congress never gave the Nuclear Regulatory Commission authority over mining itself. The Act's text says the agency's power begins only after uranium is removed from the ground, and its structure (letting the federal government buy or seize private land if it wants to control mining there) confirms that states kept their traditional authority over mining on private land.
Six justices reached this result, though through different reasoning: three read the statute's text and structure directly, while three others agreed on the bottom line but declined to embrace the lead opinion's broader warnings about courts probing state lawmakers' motives. Three dissenting justices argued the majority sidestepped the real question — whether Virginia used its mining ban as a disguised way to regulate the milling and waste-storage activities that are federally controlled.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
A Virginia company holding rights to one of the world's largest uranium deposits cannot mine it unless the state lifts its ban or the federal government seizes the land. More broadly, states retain the power to prohibit mining activities on private land within their borders, even for reasons connected to concerns the federal government has claimed elsewhere in the nuclear fuel process.
What changes now
This is a final merits decision, not a temporary order. The Fourth Circuit's ruling upholding Virginia's mining ban stands, and the company cannot mine the Coles Hill deposit unless Virginia repeals its ban or the federal government acquires the land. The decision leaves open how courts should handle cases where a state law more directly targets an activity the federal agency actually regulates, an issue the dissent argued was really at stake here.
What this does not decide
The Court did not decide whether a state law that indirectly uses a non-regulated activity (like mining) as a tool to regulate a federally preempted activity (like milling or waste storage) would be preempted. The dissent argued this was the real question, but the majority and concurrence addressed a narrower issue: whether mining regulation itself, on its face, is preempted.
Concurrences and dissents
Concurrence — Justice Ginsburg
Justice Ginsburg agreed the mining ban is not preempted but declined to join Justice Gorsuch's extended discussion of the dangers of inquiring into state legislators' motives, saying it went beyond what the case required. She also thought there was little reason to question existing preemption doctrine, since Virginia Uranium's arguments failed even under that doctrine as it stands.
Dissent — Justice Roberts
“Because “the Federal Government has occupied the entire field of nuclear safety concerns,” a state law that is “grounded in [such] safety concerns falls squarely within the prohibited field.””The dissent's central objection that the ban's true purpose should control the preemption analysis.
Chief Justice Roberts argued the majority answered the wrong question. He said everyone agreed mining safety itself is not federally preempted; the real issue was whether Virginia used its power over mining as an indirect way to regulate milling and tailings storage, which are preempted. Under precedent, he argued, a state law preempted if its purpose is to regulate a preempted field, and Virginia had conceded its ban was motivated by disagreement with federal nuclear safety rules on milling and tailings.
How the Court got there
The legal reasoning, step by step
- The Court read the Atomic Energy Act's text closely and found that it gives the Nuclear Regulatory Commission authority over uranium only 'after removal from its place of deposit in nature,' meaning mining itself was never placed under federal control.
- The Court looked at the Act's structure for confirmation: if the federal government wants to control mining on private land, the statute tells it to buy or seize the land through eminent domain, which only makes sense if state authority over mining otherwise remains intact.
- The Court considered a later-added provision, §2021(k), which lets states keep regulating certain activities for reasons other than radiation safety without needing a federal agreement; the company wanted this read as expanding federal preemption, but the Court found it does the opposite — it protects state authority rather than restricting it.
- The Court declined to extend a purpose-based inquiry — asking why a state passed a law, not just what the law does — to activities like mining that the federal agency has never regulated, distinguishing this from a prior case involving nuclear power plant construction, an area of core federal concern.
- Applying ordinary field-preemption principles, which usually ask what a state law does rather than why lawmakers passed it, the Court concluded that Virginia's mining ban does not intrude on any area Congress reserved for the federal government.
- The Court also rejected the argument that the ban was an 'obstacle' to Congress's broader goals for nuclear power, reasoning that any evidence of a preemptive purpose must come from the statute's actual text and structure, not from inferred, unenacted congressional wishes.
Doctrinal impact
Cases affected by this decision
Distinguishes Pacific Gas & Elec. Co. v. State Energy Resources Conservation and Development Comm'n (461 U. S. 190)
The Court said this case's inquiry into a state law's purpose applies only to activities close to core federal nuclear powers, not to mining.
Distinguishes National Meat Assn. v. Harris (565 U. S. 452)
The Court said this case, involving an express preemption clause and downstream sales regulation, does not control this mining dispute.