opinion: Chief Justice Rehnquist
  delivered the opinion of the Court.
  This case presents the question whether a third party has standing to challenge the validity of a death sentence imposed on a capital defendant who has elected to forgo his right of appeal to the State Supreme Court. Petitioner Jonas Whitmore contends that the Eighth and Fourteenth Amendments prevent the State of Arkansas from carrying out the death sentence imposed on Ronald Gene Simmons without first conducting a mandatory appellate review of Simmons’ conviction and sentence. We hold that petitioner lacks standing, and therefore dismiss the writ of certiorari.
  I
  On December 28, 1987, Ronald Gene Simmons shot and killed two people and wounded three others in the course of a rampage through the town of Russellville, Arkansas. After police apprehended Simmons, they searched his home in nearby Dover, Arkansas, and discovered the bodies of 14 members of Simmons’ family, all of whom had been murdered. The State filed two sets of criminal charges against Simmons, one based on the two Russellville murders and the other covering the deaths of his family members.
  Simmons was first tried for the Russellville crimes, and a jury convicted him of capital murder and sentenced him to death. After being sentenced, Simmons made this statement under oath: “T, Ronald Gene Simmons, Sr., want it to be known that it is my wish and my desire that absolutely no action by anybody be taken to appeal or in any way change this sentence. It is further respectfully requested that this sentence be carried out expeditiously.’ ” See Franz v. State, 296 Ark. 181, 183, 754 S. W. 2d 839, 840 (1988). The trial court conducted a hearing concerning Simmons’ competence to waive further proceedings, and concluded that his decision was knowing and intelligent.
  As Simmons’ execution date approached Louis J. Franz, a Catholic priest who counsels inmates at the Arkansas Department of Corrections, petitioned the Supreme Court of Arkansas for permission to proceed as Simmons’ “next friend” and to prosecute an appeal on his behalf. The court held that Franz did not have standing as “next friend,” because he had not alleged facts showing that he had ever met Simmons, much less that he had a close relationship with the defendant. It also rejected both his argument for standing under the Arkansas Constitution as an aggrieved taxpayer and his assertion that he should have standing as a concerned citizen to prevent an important legal issue from going unresolved at the appellate level.
  In dicta, the court went on to state that Arkansas law does not require a mandatory appeal in all death penalty cases. It did note, however, that a defendant sentenced to death in Arkansas will be able to forgo his direct appeal “only if he has been judicially determined to have the capacity to understand the choice between life and death and to knowingly and intelligently waive any and all rights to appeal his sentence.” Id., at 189, 754 S. W. 2d, at 843. After reviewing the record of the trial court’s competency hearing, the Supreme Court held that Simmons had made a knowing and intelligent waiver of his right to appeal. Franz and another Arkansas death row inmate, Darrel Wayne Hill, then applied in Federal District Court for a writ of habeas corpus to prevent Simmons’ execution, but the petition was denied on the ground that Franz and Hill did not have standing. Franz v. Lockhart, 700 F. Supp. 1005 (ED Ark. 1988), appeal pending, No. 89-1485EA (CA8).
  The State subsequently tried Simmons for the murder of his 14 family members, and on February 10, 1989, a jury convicted him of capital murder and imposed a sentence of death by lethal injection. Simmons again notified the trial court of his desire to waive his right to direct appeal, and after a hearing, the court found Simmons competent to do so. The Supreme Court of Arkansas, pursuant to the rule established in Franz, reviewed the competency determination and affirmed the trial court’s decision that Simmons had knowingly and intelligently waived his right to appeal. Simmons v. State, 298 Ark. 193, 766 S. W. 2d 422 (1989). The court commended the trial court and Simmons’ counsel for doing “an exceptional job in examining and exploring [Simmons’] capacity to understand the choice between life and death and his ability to know and to intelligently waive any and all right he might have in an appeal of his sentence.” Id., at 194, 766 S. W. 2d, at 423. The court also noted that Simmons’ counsel “thoroughly discussed seven possible points that could be argued for reversal on appeal” and that Simmons acknowledged those points but “rejected all encouragement and suggestions to appeal.” Ibid.
  Three days later, petitioner Jonas Whitmore, another death row inmate in Arkansas, sought permission from the Supreme Court of Arkansas to intervene in Simmons’ proceeding both individually and “as next friend of Ronald Gene Simmons.” The court concluded that Whitmore had failed to show he had standing to intervene, and it denied the motion. Simmons v. State, 298 Ark. 255, 766 S. W. 2d 423 (1989). Whitmore then asked this Court to stay Simmons’ execution, which was scheduled for March 16, 1989. We granted a stay pending the filing and disposition of a petition for certiorari, 489 U. S. 1073 (1989), and later granted Whitmore’s petition for certiorari. 492 U. S. 917 (1989).
  II
  A
  This is not the first time we have encountered a third party seeking to prevent the execution of a capital defendant who has decided to forgo further judicial proceedings. In Gilmore v. Utah, 429 U. S. 1012 (1976), we considered an application for a stay of the execution of Gary Mark Gilmore, filed by his mother Bessie Gilmore after the defendant declined to request relief. A majority of the Court concluded that Gilmore had made a knowing and intelligent waiver of any federal rights available to him and, accordingly, allowed the execution to go forward. Four Members of the Court, however, felt that the standing and other constitutional issues raised by the application were substantial and would have given the matter plenary consideration. Since Gilmore, we have been presented with other applications from third parties for stays of execution, see Lenhard v. Wolff, 443 U. S. 1306, stay of execution denied, 444 U. S. 807 (1979); Evans v. Bennett, 440 U. S. 1301, stay of execution denied, 440 U. S. 987 (1979), but until the present case, we have not requested full briefing and argument and issued an opinion of the Court on this recurring issue.
  Petitioner Whitmore asks this Court to hold that despite Simmons’ failure to appeal, the Eighth and Fourteenth Amendments require the State of Arkansas to conduct an appellate review of his conviction and sentence before it can proceed to execute him. It is well established, however, that before a federal court can consider the merits of a legal claim, the person seeking to invoke the jurisdiction of the court must establish the requisite standing to sue. Article III, of course, gives the federal courts jurisdiction over only “cases and controversies,” and the doctrine of standing serves to identify those disputes which are appropriately resolved through the judicial process. See Valley Forge Christian College v. Americans United for Separation of Church & State, Inc., 454 U. S. 464, 471-476 (1982). Our threshold inquiry into standing “in no way depends on the merits of the [petitioner’s] contention that particular conduct is illegal,” Warth v. Seldin, 422 U. S. 490, 500 (1975), and we thus put aside for now Whitmore’s Eighth Amendment challenge and consider whether he has established the existence of a “case or controversy.”
  Although we have acknowledged before that “the concept of ‘Art. Ill standing’ has not been defined with complete consistency in all of the various cases decided by this Court which have discussed it,” Valley Forge, supra, at 475, certain basic principles have been distilled from our decisions. To establish an Art. Ill case or controversy, a litigant first must clearly demonstrate that he has suffered an “injury in fact.” That injury, we have emphasized repeatedly, must be concrete in both a qualitative and temporal sense. The complainant must allege an injury to himself that is “distinct and palpable,” Warth, supra, at 501, as opposed to merely “[abstract,” O’Shea v. Littleton, 414 U. S. 488, 494 (1974), and the alleged harm must be actual or imminent, not “conjectural” or “hypothetical.” Los Angeles v. Lyons, 461 U. S. 95, 101-102 (1983). Further, the litigant must satisfy the “causation” and “redressability” prongs of the Art. Ill minima by showing that the injury “fairly can be traced to the challenged action” and “is likely to be redressed by a favorable decision.” Simon v. Eastern Kentucky Welfare Rights Organization, 426 U. S. 26, 38, 41 (1976); Valley Forge, supra, at 472. The litigant must clearly and specifically set forth facts sufficient to satisfy these Art. Ill standing requirements. A federal court is powerless to create its own jurisdiction by embellishing otherwise deficient allegations of standing. See Warth, supra, at 508, 518.
  B
  As we understand Whitmore’s claim of standing in his individual capacity, he alleges that the State has infringed rights that the Eighth Amendment grants to him personally and to the subject of the impending execution, Simmons. He therefore rests his claim to relief both on his own asserted legal right to a system of mandatory appellate review and on Simmons’ similar right. Under either theory, Whitmore must establish Art. Ill standing, see Secretary of State of Md. v. Joseph H. Munson Co., 467 U. S. 947, 956 (1984); Singleton v. Wulff 428 U. S. 106, 112 (1976), and we find that his allegations fall short of doing so.
  Whitmore’s principal claim of injury in fact is that Arkansas has established a system of comparative review in death penalty cases, and that he has “a direct and substantial interest in having the data base against which his crime is compared to be complete and to not be arbitrarily skewed by the omission of any other capital case.” Brief for Petitioner 21. Although he has already been convicted of murder and sentenced to death, has exhausted his direct appellate review, see Whitmore v. State, 296 Ark. 308, 756 S. W. 2d 890 (1988), and has been denied state postconviction relief, Whitmore v. State, 299 Ark. 55, 771 S. W. 2d 266 (1989), petitioner suggests that he might in the future obtain federal habeas corpus relief that would entitle him to a new trial. If, in that new trial, Whitmore is again convicted and sentenced to death, he would once more seek review of the sentence by the Supreme Court of Arkansas; that court would compare Whitmore’s case with other capital cases to insure that the death penalty is not freakishly or arbitrarily applied in Arkansas. Petitioner asserts that he would ultimately be injured by the State Supreme Court’s failure to review Simmons’ death sentence, because the heinous crimes committed by Simmons would not be included in the data base employed for Whit-more’s comparative review. The injury would be redressed by an order from this Court that the Eighth Amendment requires mandatory appellate review.
  Petitioner’s alleged injury is too speculative to invoke the jurisdiction of an Art. Ill court. Whitmore’s conviction and death sentence are final, and his claim that he may eventually secure federal habeas relief from his conviction is obviously problematic. Nor, although the odds may well be better, can petitioner prove that if he were to obtain habeas relief, he would be retried, convicted, and again sentenced to death. And even were we to follow Whitmore this far down the path, it is nothing more than conjecture that the addition of Simmons’ crimes to a comparative review “data base” would lead the Supreme Court of Arkansas to set aside a death sentence for Whitmore, whose victim died after he stabbed her 10 times, cut her throat, and carved an “X” on the side of her face. 296 Ark., at 317, 756 S. W. 2d, at 895. In its comparative review of Whitmore’s current sentence, the Arkansas court simply noted that defendants in similar robbery-murder capital crimes had also been sentenced to death. Ibid. Whitmore provides no factual basis for us to conclude that the sentence imposed on a mass murderer like Simmons would even be relevant to a future comparative review of Whitmore’s sentence.
  Whitmore’s theory of injury is at least as speculative as others we have found insufficient to establish Art. Ill injury in fact. In O’Shea v. Littleton, supra, we held there was no case or controversy where residents of an Illinois town sought injunctive relief against a Magistrate and a Circuit Court Judge whom the plaintiffs claimed were engaged in a pattern and practice of illegal bondsetting, sentencing, and jury-fee practices in criminal cases. The allegation of respondents (plaintiffs) in that case amounted to a claim “that if respondents proceed to violate an unchallenged law and if they are charged, held to answer, and tried in any proceedings before petitioners, they will be subjected to the discriminatory practices that petitioners are alleged to have followed.” Id., at 497. That contention, which we think is analogous to Whitmore’s, took us “into the area of speculation and conjecture,” ibid., and beyond the bounds of our jurisdiction.
  We have likewise thought inadequate allegations of future injury contingent on a plaintiff having an encounter with police wherein police would administer an allegedly illegal “chokehol[d],” Los Angeles v. Lyons, 461 U. S., at 105, on the prospective future candidacy of a former Congressman, Golden v. Zwickler, 394 U. S. 103, 109 (1969), and on police using deadly force against a person fleeing from an as yet uneffected arrest. Ashcroft v. Mattis, 431 U. S. 171, 172, n. 2 (1977). Recently in Diamond v. Charles, 476 U. S. 54 (1986), we rejected a physician’s attempt to defend a state law restricting abortions, because his complaint that fewer abortions would lead to more paying patients was “‘unadorned speculation’ ” insufficient to invoke the federal judicial power. Id., at 66 (quoting Simon v. Eastern Kentucky Welfare Rights Organization, 426 U. S., at 44). Each of these cases demonstrates what we have said many times before and reiterate today: Allegations of possible future injury do not satisfy the requirements of Art. III. A threatened injury must be “ ‘certainly impending’ ” to constitute injury in fact. Babbitt v. Farm Workers, 442 U. S. 289, 298 (1979) (quoting Pennsylvania v. West Virginia, 262 U. S. 553, 593 (1923)). See also Lyons, supra, at 102; United States v. Richardson, 418 U. S. 166, 177-178 (1974).
  Probably the most attenuated injury conferring Art. Ill standing was that asserted by the respondents in United States v. SCRAP, 412 U. S. 669 (1973). There, an environmental group challenged the Interstate Commerce Commission’s approval of a surcharge on railroad freight rates, claiming that the adverse environmental impact of the ICC’s action on the Washington metropolitan area would cause the group’s members to suffer “ ‘economic, recreational and aesthetic harm.’” Id., at 678. The SCRAP group alleged that “a general rate increase would . . . cause increased use of nonrecydable commodities as compared to recyclable goods, thus resulting in the need to use more natural resources to produce such goods, some of which resources might be taken from the Washington area, and resulting in more refuse that might be discarded in national parks in the Washington area.” Id., at 688. The Court held that those pleadings alleged a specific and perceptible harm sufficient to survive a motion to dismiss for lack of standing, but also indicated that the United States could have been entitled to summary judgment on the standing issue if it showed that “the allegations were sham and raised no genuine issue of fact.” Id., at 689, and n. 15.
  Even under the analysis of the standing question in SCRAP, which surely went to the very outer limit of the law, petitioner’s asserted injury is not enough to establish jurisdiction. In SCRAP, the environmental group alleged that specific and perceptible harms — depletion of natural resources and increased littering — would befall its members imminently if the ICC orders were not reversed. That bald statement, even if incorrect, was held sufficient to withstand a motion to dismiss, because the plaintiffs in SCRAP may have been able to show at trial that the string of occurrences alleged would happen immediately. But Whitmore does not make — and could not responsibly make — a similar claim of immediate harm. We can take judicial notice of the fact that writs of habeas corpus are granted in only some cases, and that guilty verdicts are returned after only some trials. It is just not possible for a litigant to prove in advance that the judicial system will lead to any particular result in his case. Thus, unlike the injury alleged in SCRAP, there is no amount of evidence that potentially could establish that Whit-more’s asserted future injury is “ ‘real and immediate.’” See O’Shea, 414 U. S., at 494. Moreover, as noted above, even if Whitmore could demonstrate with certainty that he would be retried, convicted, and sentenced, he has not shown that Simmons’ convictions would be pertinent to his proportionality review in the Supreme Court of Arkansas.
  Whitmore also contends that as a citizen of Arkansas, he is “entitled to the public interest protections of the Eighth Amendment,” and has a right to invoke this Court’s jurisdiction to insure that an execution is not carried out in Arkansas without appellate review. This allegation raises only the “generalized interest of all citizens in constitutional governance,” Schlesinger v. Reservists Committee to Stop the War, 418 U. S. 208, 217 (1974), and is an inadequate basis on which to grant petitioner standing to proceed. To dispose of this claim, we need do no more than quote our decision in Allen v. Wright, 468 U. S. 737, 754 (1984): “This Court has repeatedly held that an asserted right to have the Government act in accordance with law is not sufficient, standing alone, to confer jurisdiction on a federal court.” Accord, Valley Forge College v. Americans United, 454 U. S., at 482-483, and 489-490, n. 26 (“Were we to recognize standing premised on an ‘injury’ consisting solely of an alleged violation of a ‘ “personal constitutional right” to a government that does not establish religion,’ a principled consistency would dictate recognition of respondents’ standing to challenge execution of every capital sentence on the basis of a personal right to a government that does not impose cruel and unusual punishment”) (quoting Americans United for Separation of Church & State, Inc. v. United States Dept. of Health, Education and Welfare, 619 F. 2d 252, 265 (CA3 1980) (citation omitted)); Schlesinger, supra, at 216-227; United States v. Richardson, supra, at 176-177.
  Perhaps recognizing the weakness of his claim for standing, petitioner argues next that the Court should create an exception to traditional standing doctrine for this case. The uniqueness of the death penalty and society’s interest in its . proper imposition, he maintains, justify a relaxed application of standing principles. The short answer to this suggestion is that the requirement of an Art. Ill “case or controversy” is not merely a traditional “rule of practice,” but rather is imposed directly by the Constitution. It is not for this Court to employ untethered notions of what might be good public policy to expand our jurisdiction in an appealing case. We have previously resisted the temptation to “import profound differences of opinion over the meaning of the Eighth Amendment to the United States Constitution into the domain of administrative law,” Heckler v. Chaney, 470 U. S. 821, 838 (1985); id., at 839-840, n. 2 (Brennan, J., concurring), and restraint is even more important when the matter at issue is the constitutional source of the federal judicial power itself. We hold that Whitmore does not have standing in his individual capacity to press an Eighth Amendment objection to Simmons’ conviction and sentence.
  C
  As an alternative basis for standing to maintain this action, petitioner purports to proceed as “next friend of Ronald Gene Simmons.” Although we have never discussed the concept of “next friend” standing at length, it has long been an accepted basis for jurisdiction in certain circumstances. Most frequently, “next friends” appear in' court on behalf of detained prisoners who are unable, usually because of mental incompetence or inaccessibility, to seek relief themselves. E. g., United States ex rel. Toth v. Quarles, 350 U. S. 11, 13, n. 3 (1955) (prisoner’s sister brought habeas corpus proceeding while he was being held in Korea). As early as the 17th century, the English Habeas Corpus Act of 1679 authorized complaints to be filed by “any one on . . . behalf” of detained persons, see 31 Car. II, ch. 2, and in 1704 the House of Lords resolved “[t]hat every Englishman, who is imprisoned by any authority whatsoever, has an undoubted right, by his agents, or friends, to apply for, and tíbtain a Writ of Habeas Corpus, in order to procure his liberty by due course of law.” See Ashby v. White, 14 How. St. Tr. 695, 814 (Q. B. 1704). Some early decisions in this country interpreted ambiguous provisions of the federal habeas corpus statute to allow “next friend” standing in connection with petitions for writs of habeas corpus, see, e. g., Collins v. Traeger, 27 F. 2d 842, 843 (CA9 1928); United States ex rel. Funaro v. Watchorn, 164 F. 152, 153 (SDNY 1908), and Congress eventually codified the doctrine explicitly in 1948. See 28 U. S. C. § 2242 (1982 ed.) (“Application for a writ of habeas corpus shall be in writing signed and verified by the person for whose relief it is intended or by someone acting in his behalf ”) (emphasis added).
  A “next friend” does not himself become a party to the habeas corpus action in which he participates, but simply pursues the cause on behalf of the detained person, who remains the real party in interest. Morgan v. Potter, 157 U. S. 195, 198 (1895); Nash ex rel. Hashimoto v. MacArthur, 87 U. S. App. D. C. 268, 269-270, 184 F. 2d 606, 607-608 (1950), cert. denied, 342 U. S. 838 (1951). Most important for present purposes, “next friend” standing is by no means granted automatically to whomever seeks to pursue an action on behalf of another. Decisions applying the habeas corpus statute have adhered to at least two firmly rooted prerequisites for “next friend” standing. First, a “next friend” must provide an adequate explanation — such as inaccessibility, mental incompetence, or other disability — why the real party in interest cannot appear on his own behalf to prosecute the action. Wilson v. Lane, 870 F. 2d 1250, 1253 (CA7 1989), cert. pending, No. 89-81; Smith ex rel. Missouri Public Defender Comm’n v. Armontrout, 812 F. 2d 1050, 1053 (CA8), cert. denied, 483 U. S. 1033 (1987); Weber v. Garza, 570 F. 2d 511, 513-514 (CA5 1978). Second, the “next friend” must be truly dedicated to the best interests of the person on whose behalf he seeks to litigate, see, e. g., Morris v. United States, 399 F. Supp. 720, 722 (ED Va. 1975), and it has been further suggested that a “next friend” must have some significant relationship with the real party in interest. Davis v. Austin, 492 F. Supp. 273, 275-276 (ND Ga. 1980) (minister and first cousin of prisoner denied “next friend” standing). The burden is on the “next friend” clearly to establish the propriety of his status and thereby justify the jurisdiction of the court. Smith, supra, at 1053; Groseclose ex rel. Harries v. Dutton, 594 F. Supp. 949, 952 (MD Tenn. 1984).
  These limitations on the “next friend” doctrine are driven by the recognition that “[i]t was not intended that the writ of habeas corpus should be availed of, as matter of course, by intruders or uninvited meddlers, styling themselves next friends.” United States ex rel. Bryant v. Houston, 273 F. 915, 916 (CA2 1921); see also Rosenberg v. United States, 346 U. S. 273, 291-292 (1953) (Jackson, J., concurring with five other Justices) (discountenancing practice of granting “next friend” standing to one who was a stranger to the detained persons and their case and whose intervention was unauthorized by the prisoners’ counsel). Indeed, if there were no restriction on “next friend” standing in federal courts, the litigant asserting only a generalized interest in constitutional governance could circumvent the jurisdictional limits of Art. Ill simply by assuming the mantle of “next friend.”
  Whitmore, of course, does not seek a writ of habeas corpus on behalf of Simmons. He desires to intervene in a state-court proceeding to appeal Simmons’ conviction and death sentence. Under these circumstances, there is no federal statute authorizing the participation of “next friends.” The Supreme Court of Arkansas recognizes, apparently as a matter of-common law, the availability of “next friend” standing in the Arkansas courts, see Franz v. State, 296 Ark., at 184, 754 S. W. 2d, at 840-841, but declined to grant it to Whitmore. Without deciding whether a “next friend” may ever invoke the jurisdiction of a federal court absent congressional authorization, we think the scope of any federal doctrine of “next friend” standing is no broader than what is permitted by the habeas corpus statute, which codified the historical practice. And in keeping with the ancient tradition of the doctrine, we conclude that one necessary condition for “next friend” standing in federal court is a showing by the proposed “next friend” that the real party in interest is unable to litigate his own cause due to mental incapacity, lack of access to court, or other similar disability.
  That prerequisite for “next friend” standing is not satisfied where an evidentiary hearing shows that the defendant has given a knowing, intelligent, and voluntary waiver of his right to proceed, and his access to court is otherwise unimpeded. See Gilmore v. Utah, 429 U. S., at 1017 (Stevens, J., concurring). Although we are not here faced with the question whether a hearing on mental competency is required by the United States Constitution whenever a capital defendant desires to terminate further proceedings, such a hearing will obviously bear on whether the defendant is able to proceed on his own behalf. The Supreme Court of Arkansas requires a competency hearing as a matter of state law, and in this case it affirmed the trial court’s finding that Simmons had “the capacity to understand the choice between life and death and to knowingly and intelligently waive any and all rights to appeal his sentence.” Simmons v. State, 298 Ark., at 194, 766 S. W. 2d, at 423. At oral argument, Whitmore’s counsel questioned the validity of the waiver, but we find no reason to disturb the judgment of the Supreme Court of Arkansas on this point.
  Simmons was questioned by counsel and the trial court concerning his choice to accept the death sentence, and his answers demonstrate that he appreciated the consequences of that decision. He indicated that he understood several possible grounds for appeal, which had been explained to him by counsel, but informed the court that he was “not seeking any technicalities.” Tr. 15. In a psychiatric interview, Simmons stated that he would consider it “ ‘a terrible miscarriage of justice for a person to kill people and not be executed,’ ” id., at 29, and there was no meaningful evidence that he was suffering from a mental disease, disorder, or defect that substantially affected his capacity to make an intelligent decision. See Rees v. Peyton, 384 U. S. 312, 314 (1966). We therefore hold that Whitmore, having failed to establish that Simmons is unable to proceed on his own behalf, does not have standing to proceed as “next friend” of Ronald Gene Simmons.
  * * *
  At the beginning of this century, the Court confronted a situation similar to this in which a concerned citizen sought to bring an ordinary civil action to secure relief for a condemned man. The Court’s response on that occasion is equally apt today: “However friendly he may be to the doomed man and sympathetic for his situation; however concerned he may be lest unconstitutional laws be enforced, and however laudable such sentiments are, the grievance they suffer and feel is not special enough to furnish a cause of action in a case like this.” Gusman v. Marrero, 180 U. S. 81, 87 (1901).
  Jonas Whitmore lacks standing to proceed in this Court, and the writ of certiorari is dismissed for want of jurisdiction. See Doremus v. Board of Education of Hawthorne, 342 U. S. 429 (1952).
  It is so ordered.
  In addition to the constitutional requirements of Art. Ill, the court has developed several now-familiar prudential limitations on standing. See Valley Forge Christian College v. Americans United for Separation of Church & State, Inc., 454 U. S. 464, 472-475 (1982). These limitations are not involved in this ease.
  The eases relied upon by petitioner to establish that the strict requirement of standing, in some circumstances, is only a “rule of practice” that can be relaxed in view of countervailing policies are inapposite, because they concern prudential barriers to standing, not the mandates of Art. III. See Eisenstadt v. Baird, 405 U. S. 438, 445 (1972); Dombrowski v. Pfister, 380 U. S. 479, 486-487 (1965); United States v. Raines, 362 U. S. 17, 22 (1960). Because we conclude that petitioner has not established Art. Ill standing, we need not decide whether it would be appropriate in this type of action to relax the general prudential rule that a litigant “must assert his own legal rights and interests, and cannot rest his claim to relief on the legal rights or interests of third parties.” Warth v. Seldin, 422 U. S. 490, 499 (1975).
  One section of the former habeas corpus statute provided that “[alpplication for writ of habeas corpus shall be. . . signed by the person for whose relief it is intended.” Rev. Stat. § 754; 28 U. S. C. § 454 (1940 ed.) (emphasis added). Nevertheless, the Collins and Watchom courts found an implicit authorization of “next friend” standing in § 760 of the revised statutes, which stated that “[t]he petitioner or the party imprisoned or restrained may deny any of the facts set forth in the return.” Rev. Stat. § 760; 28 U. S. C. § 460 (1940 ed.) (emphasis added). At least one court concluded that “next friend” standing was not available under the old statute. Ex parte Hibbs, 26 F. 421, 435 (Ore. 1886). Other courts recognized the ability of third parties to apply for a writ but did not make clear the basis for their decisions. United States ex rel. Bryant v. Houston, 273 F. 915, 916-917 (CA2 1921); Ex parte Dostal, 243 F. 664, 668 (ND Ohio 1917). When Congress added the words “or by someone acting in his behalf” to §754 in 1948, the revisers noted that the change “follow[ed] the actual practice of the courts.” Revisers’ Notes to 28 U. S. C. §2242 (1982 ed.).
  Some courts have permitted “next friends” to prosecute actions outside the habeas corpus context on behalf of infants, other minors, and adult mental incompetents. See, e. g, Garnett v. Garnett, 114 Mass. 379 (1874) (“next friend” may bring action for divorce on behalf of an insane person); Campbell v. Campbell, 242 Ala. 141, 5 So. 2d 401 (1941) (same); Blumenthal v. Craig, 81 F. 320, 321-322 (CA3 1897) (“next friend” was admitted by court to prosecute personal injury action on behalf of the plaintiff, who was a.minor); Baltimore & Ohio R. Co. v. Fitzpatrick, 36 Md. 619 (1872) (same).
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