In Rucho v. Common Cause (2019), the U.S. Supreme Court ruled that federal courts have no authority to review partisan-gerrymandering cases, while Chief Justice John Roberts said state statutes and state constitutions could provide standards for state courts.
Notes on verification
Well-documented Supreme Court ruling; verified by multiple independent legal sources including case commentary and Ballotpedia summary of the decision.
Sources
- What's at Stake When the Supreme Court Argues Moore v. ... (propublica.org)
- https://verdict.justia.com/2019/07/18/advice-for-state-courts-in-the-aftermath-of-rucho (verdict.justia.com)
- https://constitutionallawreporter.com/2019/07/09/rucho-v-common-cause-2019/ (constitutionallawreporter.com)
- https://ballotpedia.org/Rucho_v._Common_Cause (ballotpedia.org)