South Carolina voters and civil-rights organizations challenged a congressional map, alleging that race predominated in the legislature’s districting decisions. The lower court found that the map was an unconstitutional racial gerrymander, while also recognizing the difficulty of separating race from partisan considerations. The Supreme Court of the United States held that a challenger must disentangle race from politics and overcome the presumption that the legislature acted in good faith. Applying that framework, the Court concluded that the challengers had not shown that race was the predominant motive for the challenged district. It reversed the judgment below. Justice Thomas wrote for the Court, and Justice Kagan dissented, arguing that the record supported the lower court’s finding of intentional racial sorting and that the majority had improperly displaced the trial court’s factual assessment.