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Brief Of Professors Michael Knoll And Ruth Mason As Amici Curiae Supporting Petitioners In National Pork Producers Council V. Ross, Michael S. Knoll, Ruth Mason

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The district court erred when it concluded that because Proposition 12 applies only to in-state sales, it could not be extraterritorial. On the contrary, because California regulates pork production based on domestic, inbound, and outbound sales, its regulation is internally inconsistent and overbroad. As an obligation of interstate comity, this Court has understood extraterritoriality to require the basis of regulation to be internally consistent. A regulation is internally consistent when, if every state regulated using the same nexus as the challenged state, cross-border commercial activity would not be regulated by more than one state. Proposition 12 cannot meet this basic …