Would that allow you to sue all those farmers . . . cow by cow, or at least farm by farm? – Justice Scalia
You’re going to put a $20 a ton tax on carbon, and lo and behold, you will discover that nuisance will be abated. And we bring in 15 economists. – Justice Breyer
In oral arguments for AEP v. Connecticut today the Supreme Court today seemed skeptical of Connecticut and other states’ argument that they should be allowed to pursue nuisance suits against major power companies for their GHG emissions. The transcript is available, and SCOTUSblog has a good overview of the arguments. Though making predictions based on oral arguments is dangerous, I will be very surprised if the court allows this case to proceed. But it is much less clear which of the available reasons for halting the case the court will choose. That decision will have implications that extend well beyond the legal details, and choosing one of the reasons—displacement—could even be beneficial for climate policy.
To recap for those of you that haven’t been following the case, the court has four separate plausible justifications for dismissing it. Very briefly but (hopefully) in plain English, the court could rule that the states can’t sue because:
a) any injury from climate change can’t be traced to the power companies, or courts can’t craft a remedy (Article III standing),
b) the harms of climate change are too generalized and better addressed by Congress (prudential standing),
c) climate change is a “political question” that courts can’t decide; or
d) the Clean Air Act and EPA “displace” federal common law suits like this one.
With four separate grounds available, all of them arguably applicable, the states were always on shaky ground. In fact, the only way I can see the court allowing the case to proceed is if the justices cannot agree on which rationale to choose. If there is no majority, the lower court decision (which favored the states) would stand. This is slightly more likely than normal since Justice Sotomayor has recused herself, making a 4-4 split possible. But this outcome is unlikely. The court will probably choose one (or more) of the rationales and dismiss the case.
The justices spent some time at arguments on each of the four rationales. The political question doctrine was discussed the least, but I can’t rule out any of the four. But it is interesting that two of the justices most likely to rule in the states’ favor—Justice Kagan and Justice Ginsburg—focused on the displacement issue. Each seemed to feel EPA moves to regulate GHGs were significant, and in tension with a nuisance suit: Ginsburg suggested that the suit would require courts to become a “super EPA” without the expertise for that role. If these justices favor dismissing on displacement grounds, that may be the compromise that emerges from the Court.
It helps that an opinion citing displacement almost writes itself—this case was filed, decided, and appealed at a time when EPA never looked like regulating GHGs. A lot has happened since then: Massachusetts v. EPA, the 2009 GHG endangerment finding, new vehicle emissions rules, and the late-2010 settlement agreement under which EPA committed to regulating emissions from exactly those facilities the states are pursuing: the electric power sector.
The states point out that these regulations aren’t in place yet, and though I don’t think that helps them avoid legal displacement, it illustrates why a court decision based on displacement would be so important. If you’ve been following Congress this year, you know EPA authority over GHGs is under threat. It narrowly survived the 2011 budget process, and is likely to be targeted again. But if this authority is all that stands between emitters and federal nuisance suits, it becomes much harder to get rid of. The power companies already acknowledge in their brief that EPA does have the authority to regulate GHGs from their plants (which should, by the way, finally end attempts to rhetorically relitigate Massachusetts v. EPA). If the Supreme Court rules that Congress displaced suits like Connecticut when it gave broad authority to the EPA under the Clean Air Act, legislators are much less likely to take that power away, at least not without putting something new in its place.
So while a loss for the states on displacement grounds might seem like an anti-environmental result, it would be just as accurate to view it as pro-EPA. Dismissal of the case on standing or political question grounds does not have this effect. This also illustrates why displacement is the narrowest grounds for dismissal—if the EPA fails to act or is disarmed by Congress, the Court can revisit the issue, and only then would it need to draw sweeping conclusions about the scope of broad legal doctrines.
The EPA, armed only with its current powers, is not the ideal architect for climate policy—but it is a far better venue than the courts, for both practical and philosophical reasons. The justices today seemed acutely aware of these limitations. Assuming my prediction is correct and this case is dismissed, I agree with others who argue that is the right result regardless of our views on climate policy. But it’s possible that in dismissing the case the Court will strengthen the EPA. If so, that’s good news for the climate too.

Brinksmanship is the name of the game in Washington this week. GOP leaders are publicly shifting away from negotiation tactics and turning to endgame spin strategy in advance of a government shutdown, while President Obama continues working to secure a deal without staking out an early position in the blame game that’s soon to follow.
Nuclear power should remain an important part of our energy mix. Despite a worst-case scenario, the older generation Fukushima reactor has held up remarkably well. And yet, serious obstacles remain, not the least of which is the public’s irrational fear of nuclear disaster.
In the wake of the disaster at the Fukushima nuclear power plant, new questions are being raised about the future of nuclear power. The President has reaffirmed his support for nuclear power, but the public is still looking for answers. U.S. regulators are currently conducting an exhaustive review of safety systems at the nation’s 104 reactors.
For most of modern American history, the two major political parties in America have largely agreed on the desired long-term environmental outcomes for the country: there was a consensus among Republicans and Democrats that it was a good thing to press for cleaner air and water, less toxins in the environment, biodiversity preservation, and mitigation strategies for clean energy and, mostly recently, climate change.
Taking Rahm Emanuel’s advice to heart, U.S. anti-nuclear activists are using the emergency in Japan to stoke premature panic in the United States about atomic energy. While the rest of us might want to wait and see what actually happens with the Fukushima Daiichi plant before leaping to conclusions, it’s not too early to draw three conclusions that belie this fearful, “Japan Syndrome” narrative.
Last year’s Deepwater Horizon oil spill revealed not just technological problems, but policy gaps as well. Among the most notable of these gaps is the federal limit on liability for oil spills, set at $75 million for offshore facilities. This is three or four orders of magnitude smaller than the damages associated with a major offshore spill like Deepwater Horizon, whose damages are estimated in the tens of billions. Firms that cause more damage than the limit aren’t liable, at least not under federal law. It is only BP’s decision to waive this limit that has kept it from being a much larger problem.

The specter of economic decline is haunting America. President Obama seeks to banish it by making jobs and U.S. competitiveness the centerpiece of his State of the Union report to Congress tomorrow. This sets the stage for a critical contest between dueling theories about how America can get its economic mojo back.
The new Congress is now in session, with a large GOP majority in the House and a much diminished Democratic majority in the Senate; the prospects for serious climate change legislation in the U.S. are dimmer than ever. The Republican Party has largely turned its back on science and its own conservative ideas (remember, McCain was a champion of cap and trade back in 2008), and because of the profound climate denialism of the Tea Party movement even once reasonable Republicans are now turning their backs on the overwhelming scientific evidence, and the many ways comprehensive climate policy is good for the overall economic and security interests of the nation. (To be fair, there are a few Democrats in fossil-fuel dependent states that are also opposing new climate measures, such as Senators Rockefeller and Manchin of West Virginia.)