Cite as: 602 U. S. ____ (2024) 13 KAGAN, J., dissenting or maybe not; either way, the Cooper Court said, the matter is irrelevant: We have no “warrant to demand” that plaintiffs jump through “evidentiary hoops” of our creation, “whether the exercise would cost a hundred dollars or a million, a week’s more time or a year’s,” if they can otherwise prove that race predominated in drawing district lines. 581 U. S., at 319, n. 15. 2 Finally, the majority suggests that all plaintiffs with serious gerrymandering cases should have known to produce an alternative map. See ante, at 5. But that assertion requires airbrushing Cooper out of our caselaw. What plaintiffs should have known after Cooper was that they could but need not submit an alternative map. The majority today punishes the Challengers for thinking that this Court would be good to its word. In any event, the Challengers had an understandable reason for not offering the kind of map the majority demands. The point of such a map, as the majority explains, is to help figure out whether race or politics accounts for districting lines. See ante, at 30–31. That function becomes important—so a map makes sense—only if a State in fact defends its plan as arising from political considerations. At trial, South Carolina indeed adopted that defense. But it was not clear beforehand, when the plaintiffs were developing their evidence for trial, that the State would do so. The plain fact is, politicians don’t like admitting to partisan gerrymanders: They often deny them as aggressively as they draw them. That is because “[e]xcessive partisanship in —————— 2 And that view is in no way an outlier. Note that the majority must go back almost a century to find a decision in which this Court drew an adverse inference against a civil litigant for failure to offer a certain form of evidence. See ante, at 32 (citing Interstate Circuit, Inc. v. United States, 306 U. S. 208, 226 (1939)). And even that decision merely applied an inference in a particular case; it did not create a rule to cover a whole category of suits, as the majority does today. Nor did that old decision relate to a constitutional claim. As far as I know, today’s decision is the first to impose a rule defeating claims of that type merely because plaintiffs chose not to offer one form of evidence, and instead relied on others.

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