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The Chevron doctrine requires judges to defer to an agency’s interpretation of a statute if that interpretation is reasonable. The State Farm case, which is much less widely known, requires courts to defer to an agency’s expert judgment unless its reasoning has ignored contrary evidence or has a logical hole. As you probably already know, two cases now before the Court will probably result in abandoning or revamping Chevron. But the “abortion pill” case that will be argued today will test the Court’s adherence to State Farm. Will the conservative Justices stand by State Farm even when doing so expands access to abortion?

As discussed in yesterday’s post, the contemporary conservative movement is prepared to use legal battles over esoteric administrative law doctrines, such as Chevron deference, as a tool of ideological warfare. Importantly, though, these battles present progressives with a great opportunity to engage at the ideological level as well. After all, progressives have been busy developing their own competing vision of what our constitutional democracy should look like. They should seize the opportunity presented by the fight over Chevron deference’s future to articulate and advance that vision.

In Part 1 of this three-part series, I introduced the rapidly boiling legal battle over a once-obscure administrative law doctrine known as Chevron deference. Much of the commentary to this point has focused on the political motivations behind the conservative attack on Chevron deference. In this second post, I will take a closer look at how conservatives have carefully crafted this battle (and their broader war on the administrative state) to promote their distinctive brand of ideological thought.

In January, the U.S. Supreme Court heard oral arguments in a pair of related cases — Loper Bright Enterprises v. Raimondo and Relentless v. Department of Commerce — which could be among the most consequential decisions for U.S. democracy that the Court has ever issued. That’s because the cases urge the Court to overturn a longstanding judicial doctrine called Chevron deference. Over the last 40 years, that doctrine has provided a practical framework for mediating the growing separation-of-powers fights among the three branches for control over administrative agencies, with the preservation of the administrative state’s essential democratic foundation as its guiding star.

EPA has just issued a rule tightening the air quality standard for PM2.5 — the tiny particles most dangerous to health — from an annual average of 12 micrograms per cubic meter down to 9 micrograms per cubic meter. EPA estimates that, by the time the rule goes into effect in 2032, it will avoid 4,500 premature deaths, 800,000 asthma attacks, and 290,000 lost workdays. Most likely, by the time this post goes up, someone will have filed a lawsuit to overturn the EPA rule. What legal arguments will challengers raise, and what are their chances of winning? Let’s consider the possible challenges one by one.

In 2023, the Supreme Court ended 50 years of broad federal protection of wetlands in Sackett v. United States. It is only when you look back at the history of federal wetlands regulation that you realize just how radical and destructive this decision was.

Later this month, the U.S. Supreme Court will hear oral argument about whether to stay a plan issued by the U.S. Environmental Protection Agency (EPA) to limit upwind states from creating ozone pollution that impacts other states. As I wrote before the Court decided to hear the arguments, the issues here seem less than earthshaking, and for that matter, less than urgent. It was puzzling to me why after many weeks, the Court was still sitting on the “emergency” requests of the upwind states to be rescued from the EPA plan. Given that the Court seems to think the issues are important enough to justify oral argument, however, it’s worth examining what seems to be bothering the Court about implementing the EPA plan.

What if we told you that every day, tens of millions of Americans are exposed to something that contributes to neurological disease, depression, and an increased risk of heart disease and stroke? What if we also told you that in causing these health harms, it was disproportionately affecting low-wealth communities and communities of color? What is this dangerous “something”? It’s excessive noise. And, as it happens, more than 50 years ago, Congress recognized the seriousness of the harms that excessive noise causes and, as a result, passed a law directing the EPA to take aggressive action against it.

Fisheries regulation might seem to be unusual grounds for the U.S. Supreme Court to shift power away from federal agencies. But that is what the court seems poised to do in the combined cases of Loper Bright Enterprises vs. Raimondo and Relentless Inc. vs. Department of Commerce.