National Pork Producers Council v. Ross
The Supreme Court upheld California's Proposition 12, which requires that pork sold in the state come from pigs given enough space to stand, lie down, and turn around — rejecting arguments that the rule unconstitutionally tramples on the national pork market and the farms of other states.
The 5-to-4 judgment (on sharply fractured reasoning) affirms states' power to set product standards for their own markets even when those standards mostly burden out-of-state producers, while leaving open the possibility that a better-pled lawsuit or different constitutional theories could still challenge the law.
“While the Constitution addresses many weighty issues, the type of pork chops California merchants may sell is not on that list.”
The majority's opening framing for why the pork producers' constitutional challenge fails.
How it got here: The federal district court in San Diego dismissed the complaint for failure to state a claim; the Ninth Circuit affirmed; the pork producers sought Supreme Court review and the Court agreed to hear the case.
The Case in Depth
What happened
California voters approved Proposition 12 in 2018, banning the in-state sale of whole pork products from breeding pigs confined so tightly they cannot stand up, lie down, or turn around freely. Two national pork industry organizations sued on behalf of their members — farmers and processors located mostly outside California — arguing the law was unconstitutional because California imports nearly all the pork it consumes and most of the compliance costs would fall on out-of-state operations, with producers estimating a roughly 9 percent increase in farm-level costs.
The question before the Court
Can California ban the sale of pork from pigs raised in conditions the state considers inhumane, even though most of the affected farms are in other states and compliance costs will fall mainly on out-of-state producers?
The Court's answer
Yes — at least as presented in this lawsuit, California can enforce Proposition 12. The Court unanimously rejected the producers' first argument: that the Constitution contains an "almost per se" rule against state laws that practically control commerce outside their borders. The dormant Commerce Clause — the implied constitutional limit on state laws that burden interstate trade — centers on preventing discrimination against out-of-state businesses, and Proposition 12 applies equally to California and out-of-state producers alike.
The Court also rejected the producers' second argument under the Pike balancing test — that the law's costs on the national pork market are clearly excessive compared to its benefits — though on different grounds among the justices. A plurality concluded that courts cannot weigh economic costs against the moral and health values California voters sought, because those are fundamentally incomparable; that policy tradeoff belongs to elected representatives. A separate, overlapping plurality concluded that the complaint simply did not plausibly allege a substantial enough burden on interstate commerce to trigger Pike balancing at all, relying on a prior case involving a Maryland petroleum law.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Pork producers across the country must meet California's minimum space standards for pigs or stop selling in California, which accounts for roughly 13 percent of U.S. pork consumption. The ruling signals that states can set animal-welfare and safety standards for goods sold in their markets without automatically running afoul of constitutional commerce limits, as long as those standards apply equally to in-state and out-of-state producers.
What changes now
The producers' lawsuit is dismissed, and California's Proposition 12 remains in effect. The decision explicitly leaves open whether a future lawsuit — with more detailed factual allegations demonstrating a substantial burden on the national pork market — could survive past the motion-to-dismiss stage. It also leaves unresolved constitutional questions Justice Kavanaugh flagged about Proposition 12's potential conflict with the Import-Export Clause, the Privileges and Immunities Clause, and the Full Faith and Credit Clause. Congress retains the power to pass a uniform federal rule that would displace California's law.
What this does not decide
The ruling does not decide that Proposition 12 is valid under all constitutional theories — only that this specific complaint failed to state a dormant Commerce Clause claim. Future suits with stronger factual allegations, or arguments under the Import-Export Clause, the Privileges and Immunities Clause, or the Full Faith and Credit Clause, were left entirely open.
Concurrences and dissents
Concurrence — Justice Sotomayor
Justice Sotomayor agreed with the judgment but wrote separately to clarify her view of the Pike balancing test. She rejected the plurality's conclusion that courts are institutionally unable to weigh economic costs against noneconomic benefits — courts routinely balance incommensurable values in other legal contexts. In her view, the complaint should be dismissed for the narrower reason that it failed to plausibly allege a substantial burden on interstate commerce, the threshold requirement under Pike, relying on the Court's Exxon decision.
Concurrence — Justice Barrett
Justice Barrett agreed that Proposition 12's benefits and burdens are incommensurable — courts cannot place the moral value of animal welfare on one side of a scale against dollars and cents without making policy judgments reserved for legislators. She therefore agreed with the judgment. She disagreed, however, with the conclusion that the complaint failed to allege a substantial burden on interstate commerce; in her view, the alleged costs are pervasive and fall primarily outside California, which is enough to clear that threshold.
Dissent in part — Justice Roberts
Chief Justice Roberts agreed that the dormant Commerce Clause does not create a per se rule against extraterritorial effects and agreed courts can balance benefits and burdens under Pike. He parted ways on the key question: the complaint plausibly alleged market-wide harms going well beyond simple compliance costs — including forced compliance by farmers who don't even sell into California, nationwide health effects on pig populations, and disruption to generations of industry practice. He would have vacated and sent the case back to the Ninth Circuit to weigh the burden against Proposition 12's putative local benefits.
Dissent in part — Justice Kavanaugh
Justice Kavanaugh joined Chief Justice Roberts' opinion and agreed the complaint alleges a substantial burden warranting remand. He wrote separately to emphasize that state laws like Proposition 12 may raise significant constitutional questions beyond the Commerce Clause — specifically under the Import-Export Clause, the Privileges and Immunities Clause, and the Full Faith and Credit Clause — and that those theories deserve careful examination in future cases as states increasingly condition market access on compliance with their own farming and production standards.
How the Court got there
The legal reasoning, step by step
- The dormant Commerce Clause — the implied constitutional rule that states cannot use their laws to discriminate against out-of-state businesses in favor of in-state ones, even when Congress hasn't acted — is the core of the producers' challenge. The producers conceded upfront that Proposition 12 does not discriminate: it imposes the same pig-housing standards on California farms as on farms elsewhere. That concession put them in a difficult position from the start.
- The producers argued that three earlier cases — Baldwin (dairy pricing), Brown-Forman (liquor pricing), and Healy (beer pricing) — established an 'almost per se' rule against any state law that practically controls commerce outside its borders. The Court unanimously rejected this reading, explaining that all three cases were really about stopping states from protecting local businesses at the expense of out-of-state competitors. Because nearly every state law ripples across state lines in some way, accepting the producers' rule would cast doubt on countless lawful state regulations.
- The producers then invoked the Pike v. Bruce Church balancing test — under which a court asks whether a state law's burdens on interstate commerce are 'clearly excessive' compared to its local benefits. The Court's majority portions explained that Pike is best understood as a tool for detecting hidden discrimination through a law's practical effects, not a general license for courts to override any state economic regulation that burdens out-of-state interests more than in-state ones.
- A plurality of three justices (Gorsuch, Thomas, Barrett — Part IV-B) concluded that even if Pike balancing applied, the specific comparison Proposition 12 requires is impossible for courts: the economic costs to some producers cannot be weighed against the moral and consumer-health benefits California voters sought, because those are incommensurable values. Deciding whether pig welfare outweighs pork prices is a policy judgment that belongs to elected representatives, not judges applying no neutral legal rule.
- A separate plurality of four justices (Gorsuch, Thomas, Sotomayor, Kagan — Part IV-C) concluded that regardless of the scope of Pike, the complaint failed the threshold requirement of plausibly alleging a 'substantial burden' on interstate commerce. Drawing on Exxon Corp. v. Governor of Maryland, the Court held that a law merely shifting market share from one group of out-of-state firms to another — without protecting in-state firms — does not constitute the kind of harm that triggers Pike scrutiny. Proposition 12's effects fit that pattern.
- Because both the IV-B plurality (incommensurability) and the IV-C plurality (no substantial burden alleged) each independently supported dismissing the complaint, the Court affirmed the lower courts' ruling that the producers had failed to state a viable constitutional claim.
Doctrinal impact
Cases affected by this decision
Distinguishes Healy v. Beer Institute (491 U.S. 324)
Read as an anti-discrimination ruling about beer pricing, not support for a broad extraterritoriality rule.
Distinguishes Baldwin v. G. A. F. Seelig, Inc. (294 U.S. 511)
Read as barring discriminatory dairy pricing that protected in-state producers, not establishing an extraterritoriality doctrine.
Distinguishes Pike v. Bruce Church, Inc. (397 U.S. 137)
Petitioners' claim about Proposition 12 falls well outside Pike's core, which targets hidden discriminatory purpose in state laws.
Reaffirms Exxon Corp. v. Governor of Maryland (437 U.S. 117)
Reaffirmed as the standard: laws that merely shift market share among out-of-state firms do not substantially burden interstate commerce.