Arizona State Legislature v. Arizona Independent Redistricting Comm'n

Summary

The Supreme Court affirmed the district court, holding that the Arizona Legislature has standing to challenge Proposition 106 and that both the Elections Clause and 2 U.S.C. §2a(c) permit Arizona to use an independent redistricting commission for congressional districts. The Court reasoned that the Legislature’s injury is concrete and traceable, and that “legislature” in the Elections Clause includes lawmaking authority exercised through the initiative process.