418 U.S. 208 (1974)
The Reservists Committee to Stop the War, a national unincorporated association of present and former officers and enlisted members of the Reserves organized for the purpose of opposing United States military involvement in Vietnam, along with five individual members who were California residents, United States citizens, and taxpayers, filed a class action in the United States District Court for the District of Columbia against the Secretary of Defense and the three Service Secretaries.1 The complaint sought an order in the nature of mandamus requiring petitioners to strike from the rolls of the Reserves all Members of Congress presently thereon, a permanent injunction preventing petitioners from placing on the rolls of the Reserves any Member of Congress while serving in Congress, and a declaration that membership in the Reserves is an office under the United States prohibited to Members of Congress by Article I, Section 6, Clause 2.2
The plaintiffs sought to represent four classes: all persons opposed to United States military involvement in Vietnam and purporting to use lawful means to end that involvement, all officers and enlisted members of the Reserves who were not Members of Congress, all taxpayers of the United States, and all citizens of the United States.3 At the time suit was filed, 130 Members of the 91st Congress were also members of the Reserves.4 By the end of the 92d Congress, 119 Members were reservists.5 As of November 2, 1973, the 93d Congress has seen the number of its reservists reduced to 107, all but one of whom are commissioned officers, and none of whom can occupy the Ready Reserve status of the individual respondents.6 Of the 107, 20 are in the active, and 12 in the inactive, Standby Reserve; and 73 are in the Retired Reserve.7
Petitioners moved to dismiss the complaint on the ground that respondents lacked standing and that the complaint failed to state a cause of action.8 The District Court denied standing to respondents as reservists, as opponents of our Vietnam involvement, and as taxpayers, but held that their status as citizens conferred standing.9 The court rejected the contention that the claim presented a nonjusticiable political question and granted partial summary judgment for respondents by declaring that the Incompatibility Clause renders a Member of Congress ineligible, during his continuance in office, to hold a Reserve commission.10
The Court of Appeals affirmed the judgment of the District Court in an unpublished opinion on the basis of the memorandum opinion of the District Court.11 The Supreme Court granted certiorari to review the judgment of the Court of Appeals.12
Whether respondents have standing to sue as United States citizens?13
Standing under Article III requires that a plaintiff allege a concrete and particularized injury that is actual or imminent rather than conjectural or hypothetical.14 This ensures a personal stake in the outcome that produces the concrete adverseness needed for judicial resolution of constitutional questions.15
No. The Reservists Committee to Stop the War, an association of present and former Reserve members organized to oppose United States military involvement in Vietnam, together with five individual California residents who were citizens and taxpayers, filed a class action in the District Court against the Secretary of Defense and Service Secretaries.16 The complaint sought mandamus, injunctive, and declaratory relief to remove Members of Congress from Reserve rolls on the ground that such membership violated the Incompatibility Clause.17 Respondents purported to represent all United States citizens and alleged that reservist Members of Congress were subject to possible undue Executive influence and inconsistent obligations that deprived citizens of the faithful discharge of legislative duties.18 These allegations assert only an undifferentiated interest shared by all citizens in constitutional governance and present nothing more than abstract injury.19 The facts further show that 130 Members of the 91st Congress held Reserve commissions at the time of filing, yet the complaint identifies no specific instance in which any respondent suffered a direct, personal harm traceable to those commissions.20 Because the asserted injury remains hypothetical and common to the entire public, respondents fail to satisfy the personal-stake requirement.21
The same facts confirm that the District Court erred when it granted citizen standing on the theory that the Incompatibility Clause was precise and self-operative.22 The Supreme Court rejected that approach, holding that an abstract interest in enforcement of a constitutional provision, even one designed to protect the independence of the branches, cannot substitute for concrete injury.23
Respondents do not have standing to sue as United States citizens.24
Related opinions on this issue
Justice Stewart concurred that respondents lacked standing as citizens because they alleged no direct, palpable injury of the sort required by Article III.25 He noted that, unlike the plaintiff in United States v. Richardson, respondents did not claim that petitioners had refused to perform an affirmative constitutional duty.26 Stewart emphasized that standing is denied not because many people suffer the same injury, but because none of the respondents alleged the concrete harm necessary under Article III, leaving only generalized grievances about the conduct of government.27
Joined by Justice Marshall
Justice Douglas dissented, arguing that citizens possess standing to enforce the Incompatibility Clause because it was designed as a specific constitutional limitation protecting the independence of Congress from Executive influence.28 He maintained that the interest of citizens in keeping the Clause operative is a rightful concern even if widely shared, and that the personal stake required by Baker v. Carr need not be monetary.29 Douglas distinguished Ex parte Lévitt as involving only a remote and contingent injury, whereas the present suit asserted an ongoing conflict between Reserve commissions and the constitutional prohibition.30
Justice Marshall dissented on the ground that respondents alleged a direct and concrete injury to their First Amendment interest in persuading Members of Congress to end the Vietnam War.31 He observed that respondents asserted a right to have their arguments considered by legislators free from conflict of interest arising from Reserve commissions.32 Marshall rejected the majority's characterization of the claim as a generalized grievance, noting that not all citizens sought to end the war or to persuade Congress to that end, and that the injury to effective political advocacy was judicially cognizable.33
Whether respondents have standing to sue as federal taxpayers?34
Taxpayer standing exists only when a plaintiff challenges an exercise of congressional power under the Taxing and Spending Clause and alleges that the challenged enactment exceeds a specific constitutional limitation on that power.35 This establishes the logical nexus between taxpayer status and the claim required by Article III.36
No. The established facts demonstrate that respondents challenged the action of the Executive Branch in maintaining Members of Congress on the rolls of the Reserves rather than any congressional enactment under Article I, Section 8.3738 The complaint sought relief against the Secretary of Defense for permitting reservist status, not against an appropriation statute itself.39 The claim does not attack the exercise of the taxing and spending power. It does not assert that any enactment exceeds a specific constitutional limit on that power.
Therefore the required nexus between taxpayer status and the asserted claim is absent.40 The District Court correctly denied taxpayer standing on this ground, and the Supreme Court affirmed that conclusion.41
Respondents do not have standing to sue as federal taxpayers.42
Related opinions on this issue
Justice Brennan dissented, contending that standing is established by a good-faith allegation of injury in fact and that further inquiries into the zone of interests protected by the constitutional provision are relevant only to justiciability or reviewability, not to standing.43 He would have found the taxpayer allegation sufficient to meet the injury-in-fact requirement and would not have imposed Flast's nexus test outside the Establishment Clause context.44 Brennan viewed the majority's extension of the nexus requirement as producing confusion and obscuring the distinct inquiries of standing, reviewability, and the merits.45