6 ALEXANDER v. SOUTH CAROLINA STATE CONFERENCE OF THE NAACP Opinion of the Court ensures that “race for its own sake, and not other districting principles, was the legislature’s dominant and controlling rationale in drawing its district lines.” Miller, 515 U. S., at 913; see also Cromartie I, 526 U. S., at 546 (noting that strict scrutiny is warranted when a map is “unexplainable on grounds other than race” (internal quotation marks omitted)). Three additional reasons justify this presumption. First, this presumption reflects the Federal Judiciary’s due respect for the judgment of state legislators, who are similarly bound by an oath to follow the Constitution. Second, when a federal court finds that race drove a legislature’s districting decisions, it is declaring that the legislature engaged in “offensive and demeaning” conduct, Miller, 515 U. S., at 912, that “bears an uncomfortable resemblance to political apartheid,” Shaw I, 509 U. S., at 647. We should not be quick to hurl such accusations at the political branches. Third, we must be wary of plaintiffs who seek to transform federal courts into “weapons of political warfare” that will deliver victories that eluded them “in the political arena.” Cooper, 581 U. S., at 335 (ALITO, J., concurring in judgment in part and dissenting in part). The presumption of good faith furthers each of these constitutional interests. It also explains why we have held that the plaintiff ’s evidentiary burden in these cases is especially stringent. See Cromartie II, 532 U. S., at 241. If a plaintiff can demonstrate that race drove the mapping of district lines, then the burden shifts to the State to prove that the map can overcome the daunting requirements of strict scrutiny. Under this standard, we begin by asking whether the State’s decision to sort voters on the basis of race furthers a compelling governmental interest. Cooper, 581 U. S., at 292. We then determine whether the State’s use of race is “narrowly tailored”—i.e., “necessary”— to achieve that interest. This standard is extraordinarily onerous because the Fourteenth Amendment was designed

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