Justice White
delivered the opinion of the Court.
In these cases, we review an application of the so-called “zone of interest” standing test that was first articulated in Association of Data Processing Service Organizations, Inc. v. Camp, 397 U. S. 150 (1970). Concluding that respondent is a proper litigant, we also review, and reverse, a judgment that the Comptroller of the Currency exceeded his authority in approving the applications of two national banks for the establishment or purchase of discount brokerage subsidiaries.
I
In 1982, two national banks, Union Planter's National Bank of Memphis (Union Planters) and petitioner Security Pacific National Bank of Los Angeles (Security Pacific), applied to the Comptroller of the Currency for permission to open offices that would offer discount brokerage services to the pub-[391]*391lie.1 Union Planters proposed to acquire an existing discount brokerage operation, and Security Pacific sought to establish an affiliate named Discount Brokerage. Both banks proposed to offer discount brokerage services not only at their branch offices but also at other locations inside and outside of their home States.
In passing on Security Pacific’s application, the Comptroller was faced with the question whether the operation of Discount Brokerage would violate the National Bank Act’s branching provisions. Those limitations, enacted as §§ 7 and 8 of the McFadden Act, 44 Stat. 1228, as amended, are codified at 12 U. S. C. § 36 and 12 U. S. C. § 81. Section 81 limits “the general business” of a national bank to its headquarters and any “branches” permitted by §36. Section 36(c) provides that a national bank is permitted to branch only in its home State and only to the extent that a bank of the same State is permitted to branch under state law. The term “branch” is defined at 12 U. S. C. § 36(f) “to include any branch bank, branch office, branch agency, additional office, or any branch place of business ... at which deposits are received, or checks paid, or money lent.”
The Comptroller concluded that “the non-chartered offices at which Discount Brokerage will offer its services will not constitute branches under the McFadden Act because none of the statutory branching functions will be performed there.” App. D to Pet. for Cert, in No. 85-971, p. 39a. He explained that although Discount Brokerage would serve as an intermediary for margin lending, loan approval would take place at chartered Security Pacific offices, so that Discount Brokerage offices would not be lending money within the meaning of § 36(f). Likewise, although Discount Broker[392]*392age would maintain, and pay interest on, customer balances created as an incident of its brokerage business, the Comptroller concluded that these accounts differ sufficiently in nature from ordinary bank accounts that Discount Brokerage would not be engaged in receiving deposits.2 He further observed that treating offices conducting brokerage activities as branches under § 36(f) would be inconsistent with the “long-standing and widespread” practice of banks’ operating nonbranch offices dealing in United States Government or municipal securities. Id., at 44a. Accordingly, the Comptroller approved Security Pacific’s application.3
Respondent, a trade association representing securities brokers, underwriters, and investment bankers, brought this action in the United States District Court for the District of Columbia. Among other things, respondent contended that bank discount brokerage offices are branches within the meaning of § 36(f) and thus are subject to the geographical [393]*393restrictions imposed by § 36(c).4 The Comptroller disputed this position on the merits and also argued that respondent lacks standing because it is not within the zone of interests protected by the McFadden Act.5 The Comptroller contended that Congress passed the McFadden Act not to protect securities dealers but to establish competitive equality between state and national banks.
The District Court, relying on Association of Data Processing Service Organizations, Inc. v. Camp, 397 U. S. 150 (1970), held that respondent has standing and rejected the Comptroller’s submission that national banks may offer discount brokerage services at nonbranch locations. A divided panel of the Court of Appeals affirmed in a brief per curiam opinion,6 244 U. S. App. D. C. 419, 758 F. 2d 739 (1985), and rehearing en banc was denied, with three judges dissenting. 247 U. S. App. D. C. 42, 765 F. 2d 1196 (1985).
[394]*394The Comptroller sought review by petition for certiorari, as did Security Pacific. We granted both petitions, and consolidated the cases. 475 U. S. 1044 (1986). We now affirm the judgment that respondent has standing, but reverse on the merits.
I — I f — <
In Association of Data Processing Service Organizations, Inc. v. Camp, supra, the association challenged a ruling by the Comptroller allowing national banks, as part of their incidental powers under 12 U. S. C. § 24 Seventh, to make data-processing services available to other banks and to bank customers. There was no serious question that the data processors had sustained an injury in fact by virtue of the Comptroller’s action. Rather, the question, which the Court described as one of standing, was whether the data processors should be heard to complain of that injury. The matter was basically one of interpreting congressional intent,7 and the Court looked to § 10 of the Administrative Procedure Act (APA), 5 U. S. C. § 702, which “grants standing to a person ‘aggrieved by agency action within the meaning of a relevant statute.’” 397 U. S., at 153. The Court of Appeals had interpreted § 702 as requiring either the showing of a “legal interest,” as that term had been narrowly construed in our earlier cases, e. g., Tennessee Electric Power Co. v. TVA, 306 U. S. 118, 137 (1939), or alternatively as requiring an explicit provision in the relevant statute permitting suit by any party “adversely affected or aggrieved.”8 See Association of Data Processing Service Organizations, Inc. v. Camp, 406 [395]*395F. 2d 837 (CA8 1969). This Court was unwilling to take so narrow a view of the APA’s “‘generous review provisions,'” 397 U. S., at 156 (quoting Shaughnessy v. Pedreiro, 349 U. S. 48
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Justice White
delivered the opinion of the Court.
In these cases, we review an application of the so-called “zone of interest” standing test that was first articulated in Association of Data Processing Service Organizations, Inc. v. Camp, 397 U. S. 150 (1970). Concluding that respondent is a proper litigant, we also review, and reverse, a judgment that the Comptroller of the Currency exceeded his authority in approving the applications of two national banks for the establishment or purchase of discount brokerage subsidiaries.
I
In 1982, two national banks, Union Planter's National Bank of Memphis (Union Planters) and petitioner Security Pacific National Bank of Los Angeles (Security Pacific), applied to the Comptroller of the Currency for permission to open offices that would offer discount brokerage services to the pub-[391]*391lie.1 Union Planters proposed to acquire an existing discount brokerage operation, and Security Pacific sought to establish an affiliate named Discount Brokerage. Both banks proposed to offer discount brokerage services not only at their branch offices but also at other locations inside and outside of their home States.
In passing on Security Pacific’s application, the Comptroller was faced with the question whether the operation of Discount Brokerage would violate the National Bank Act’s branching provisions. Those limitations, enacted as §§ 7 and 8 of the McFadden Act, 44 Stat. 1228, as amended, are codified at 12 U. S. C. § 36 and 12 U. S. C. § 81. Section 81 limits “the general business” of a national bank to its headquarters and any “branches” permitted by §36. Section 36(c) provides that a national bank is permitted to branch only in its home State and only to the extent that a bank of the same State is permitted to branch under state law. The term “branch” is defined at 12 U. S. C. § 36(f) “to include any branch bank, branch office, branch agency, additional office, or any branch place of business ... at which deposits are received, or checks paid, or money lent.”
The Comptroller concluded that “the non-chartered offices at which Discount Brokerage will offer its services will not constitute branches under the McFadden Act because none of the statutory branching functions will be performed there.” App. D to Pet. for Cert, in No. 85-971, p. 39a. He explained that although Discount Brokerage would serve as an intermediary for margin lending, loan approval would take place at chartered Security Pacific offices, so that Discount Brokerage offices would not be lending money within the meaning of § 36(f). Likewise, although Discount Broker[392]*392age would maintain, and pay interest on, customer balances created as an incident of its brokerage business, the Comptroller concluded that these accounts differ sufficiently in nature from ordinary bank accounts that Discount Brokerage would not be engaged in receiving deposits.2 He further observed that treating offices conducting brokerage activities as branches under § 36(f) would be inconsistent with the “long-standing and widespread” practice of banks’ operating nonbranch offices dealing in United States Government or municipal securities. Id., at 44a. Accordingly, the Comptroller approved Security Pacific’s application.3
Respondent, a trade association representing securities brokers, underwriters, and investment bankers, brought this action in the United States District Court for the District of Columbia. Among other things, respondent contended that bank discount brokerage offices are branches within the meaning of § 36(f) and thus are subject to the geographical [393]*393restrictions imposed by § 36(c).4 The Comptroller disputed this position on the merits and also argued that respondent lacks standing because it is not within the zone of interests protected by the McFadden Act.5 The Comptroller contended that Congress passed the McFadden Act not to protect securities dealers but to establish competitive equality between state and national banks.
The District Court, relying on Association of Data Processing Service Organizations, Inc. v. Camp, 397 U. S. 150 (1970), held that respondent has standing and rejected the Comptroller’s submission that national banks may offer discount brokerage services at nonbranch locations. A divided panel of the Court of Appeals affirmed in a brief per curiam opinion,6 244 U. S. App. D. C. 419, 758 F. 2d 739 (1985), and rehearing en banc was denied, with three judges dissenting. 247 U. S. App. D. C. 42, 765 F. 2d 1196 (1985).
[394]*394The Comptroller sought review by petition for certiorari, as did Security Pacific. We granted both petitions, and consolidated the cases. 475 U. S. 1044 (1986). We now affirm the judgment that respondent has standing, but reverse on the merits.
I — I f — <
In Association of Data Processing Service Organizations, Inc. v. Camp, supra, the association challenged a ruling by the Comptroller allowing national banks, as part of their incidental powers under 12 U. S. C. § 24 Seventh, to make data-processing services available to other banks and to bank customers. There was no serious question that the data processors had sustained an injury in fact by virtue of the Comptroller’s action. Rather, the question, which the Court described as one of standing, was whether the data processors should be heard to complain of that injury. The matter was basically one of interpreting congressional intent,7 and the Court looked to § 10 of the Administrative Procedure Act (APA), 5 U. S. C. § 702, which “grants standing to a person ‘aggrieved by agency action within the meaning of a relevant statute.’” 397 U. S., at 153. The Court of Appeals had interpreted § 702 as requiring either the showing of a “legal interest,” as that term had been narrowly construed in our earlier cases, e. g., Tennessee Electric Power Co. v. TVA, 306 U. S. 118, 137 (1939), or alternatively as requiring an explicit provision in the relevant statute permitting suit by any party “adversely affected or aggrieved.”8 See Association of Data Processing Service Organizations, Inc. v. Camp, 406 [395]*395F. 2d 837 (CA8 1969). This Court was unwilling to take so narrow a view of the APA’s “‘generous review provisions,'” 397 U. S., at 156 (quoting Shaughnessy v. Pedreiro, 349 U. S. 48, 51 (1955)), and stated that in accordance with previous decisions the Act should be construed “not grudgingly but as serving a broadly remedial purpose,” ibid, (citing Shaughnessy, supra, and Rusk v. Cort, 369 U. S. 367, 379-380 (1962)). Accordingly, the data processors could be “within that class of ‘aggrieved’ persons who, under § 702, are entitled to judicial review of ‘agency action/” 397 U. S., at 157, even though the National Bank Act itself has no reference to aggrieved persons, and, for that matter, no review provision whatsoever.9 It was thought, however, that Congress, in enacting §702, had not intended to allow suit by every person suffering injury in fact. What was needed was a gloss on the meaning of §702. The Court supplied this gloss by adding to the requirement that the complainant be “adversely affected or aggrieved,” i. e., injured in fact, the [396]*396additional requirement that “the interest sought to be protected by the complainant [be] arguably within the zone of interests to be protected or regulated by the statute or constitutional guarantee in question.” Id., at 153.
The Court concluded that the data processors were arguably within the zone of interests established by §4 of the Bank Service Corporation Act of 1962, 76 Stat. 1132, 12 U. S. C. § 1864, which forbids bank service corporations to “engage in any activity other than the performance of bank services for banks.” See 397 U. S., at 155. In so holding, the Court relied on a brief excerpt from the legislative history of § 4 indicating that Congress intended to enforce adherence to “the accepted public policy which strictly limits banks to banking.” Ibid, (internal quotations omitted).10 The data processors were therefore permitted to litigate the validity of the Comptroller’s ruling.
The “zone of interest” formula in Data Processing has not proved self-explanatory,11 but significant guidance can nonetheless be drawn from that opinion. First. The Court interpreted the phrase “a relevant statute” in § 702 broadly; the data processors were alleging violations of 12 U. S. C. § 24 Seventh, see 397 U. S., at 157, n. 2, yet the Court relied on the legislative history of a much later statute, §4 of the Bank [397]*397Service Corporation Act of 1962, in holding that the data processors satisfied the “zone of interest” test. Second. The Court approved the “trend . . . toward [the] enlargement of the class of people who may protest administrative action.” 397 U. S., at 154. At the same time, the Court implicitly recognized the potential for disruption inherent in allowing every party adversely affected by agency action to seek judicial review. The Court struck the balance in a manner favoring review, but excluding those would-be plaintiffs not even “arguably within the zone of interests to be protected or regulated by the statute . . . .” Id., at 153.12
The reach of the “zone of interest” test, insofar as the class of potential plaintiffs is concerned, is demonstrated by the subsequent decision in Investment Company Institute v. Camp, 401 U. S. 617 (1971). There, an association of open-end investment companies and several individual investment companies sought, among other things, review of a Comptroller’s regulation that authorized banks to operate collective investment funds. The companies alleged that the regulation violated the Glass-Steagall Banking Act of 1933, which prohibits banks from underwriting or issuing securities. See 12 U. S. C. §24 Seventh. The Comptroller urged that the plaintiffs lacked standing, to which the Court responded that plaintiffs not only suffered actual injury but, as in Data Processing, suffered injury from the competition that Congress had arguably legislated against by limiting the activities available to national banks.13