Page:Arizona State Legislature v. Arizona Independent Redistricting Comm’n.pdf/16

12  Comm’n, 211 Ariz. 337, 351, 121 P. 3d 843, 857 (App. 2005) (per curiam) (“Once the Commission certifies [its] maps, the secretary of state must use them in conducting the next election.”). To establish standing, the Legislature need not violate the Arizona Constitution and show that the Secretary of State would similarly disregard the State’s fundamental instrument of government.

Raines v. Byrd, 521 U. S. 811 (1997), does not aid AIRC’s argument that there is no standing here. In Raines, this Court held that six individual Members of Congress lacked standing to challenge the Line Item Veto Act. Id., at 813–814, 829–830 (holding specifically and only that “individual members of Congress [lack] Article III standing”). The Act, which gave the President authority to cancel certain spending and tax benefit measures after signing them into law, allegedly diluted the efficacy of the Congressmembers’ votes. Id., at 815–817. The “institutional injury” at issue, we reasoned, scarcely ze­roed in on any individual Member. Id., at 821. “[W]idely dispersed,” the alleged injury “necessarily [impacted] all Members of Congress and both Houses … equally.” Id., at 829, 821. None of the plaintiffs, therefore, could tena­bly claim a “personal stake” in the suit. Id., at 830.

In concluding that the individual Members lacked standing, the Court “attach[ed] some importance to the fact that [the Raines plaintiffs had] not been authorized to represent their respective Houses of Congress.” Id., at 829. “[I]ndeed,” the Court observed, “both houses actively oppose[d] their suit.” Ibid. Having failed to prevail in their own Houses, the suitors could not repair to the Judi­ciary to complain. The Arizona Legislature, in contrast, is an institutional plaintiff asserting an institutional injury, and it commenced this action after authorizing votes in both of its chambers, App. 26–27, 46. That “different … circumstanc[e],” 521 U. S., at 830, was not sub judice in