delivered the opinion of the Court.
This suit is a facet of the .complicated controversy between the Whitney National Bank of New Orleans (Whitney-New Orleans) and three of its state-chartered *413banking competitors over the establishment by Whitney-New Orleans of a national bank (Whitney-Jefferson) in Jefferson Parish, Louisiana, which adjoins the Parish of Orleans. In order to avoid the restrictions of the national banking laws as to branch banking1 and still tap the banking market in Jefferson Parish, Whitney-New Orleans resorted to the organization of a bank holding company. After approval of the plan by the Federal Reserve Board on May 3, 1962, two of the respondent banks filed this declaratory judgment action on June 9,1962, seeking a declaration that the Comptroller of the Currency had no power to grant the necessary authority and praying in addition for injunctive relief restraining him from issuing a certificate of authority for the new bank.
Four days later two of the respondent banks petitioned the Board for reconsideration of its approval of the Whitney application. Their petition was denied, and on June 30, 1962, they sought judicial review of the Federal Reserve Board decision in the Court of Appeals for the Fifth Circuit.2 That suit is presently pending there awaiting our decision here.
Meanwhile, in this suit the United States District Court for the District of Columbia assumed jurisdiction and held on the merits that § 7. of the Bank Holding Company Act of 19563 reserved to the States final authority *414to prohibit the opening of subsidiaries of bank holding companies within their borders and that Louisiana had adopted such a law (albeit subsequent to the approval of the plan involved here by the Federal Reserve Board)4 which prevented the Comptroller from issuing the certificate. . A permanent injunction was issued against the Comptroller restraining the1 issuance of the authority. 211 F. Supp. 576. On appeal the Court of Appeals upheld the jurisdiction of the District Court, rejecting the contention that the competitor banks lacked standing to sue. It related bank charters to semi-exclusive franchises conferring upon their holders a right to be free from the competition of a branch bank the operation of which was vio-lative of the Banking Act of 1933, 12 U. S. C. § 36 (1958 ed.). On the merits it concluded that the proposed Jefferson Parish bank would be but a branch of Whitney-New Orleans which was prohibited by the Act. ' It therefore found it unnecessary to pass upon the effect of Louisiana’s law prohibiting the opening or operation of subsidiaries by bank holding companies. 116 U. S. App. D. C. 285, 323 F. 2d 290. In view of the tangle in which the parties had thus involved themselves and the national banking laws as well, we granted certiorari. 376 U. S. 948. We have concluded that the District Court for the District, of Columbia had no jurisdiction to pass on the merits of the holding company proposal; that appropriate disposition of the controversy cannot be made without further consideration of the case by the Federal Reserve Board, where original exclusive jurisdiction rests; and that since the application for review of its decision is *415now pending in the Court of Appeals for the Fifth Circuit, reasonable time should be allowed for .that court to act. We, therefore, reverse these judgments and order dismissal of the complaint. But issuance of our judgment is stayed for a period of 60 days in order to give the parties time to move in the Court of Appeals for the Fifth Circuit for an order remanding that case to the Federal Reserve Board; and, in the event of such a remand, to permit the Court of Appeals to issue such orders as will protect its jurisdiction pending final determination of the matter.
I.
The facts are undisputed. Whitney-New Orleans desired to extend its banking business into the expanding urban areas beyond the Parish of Orleans, its home base. It could not open branches beyond the parish line because Louisiana law, La. Rev. Stat. § 6:54 (1950), applicable to national banks, prohibited its operating a branch bank outside of its home parish. After discussions with the Deputy Comptroller of the Currency it was decided that the bank should establish a holding company (Whitney Holding Corporation) under federal law with a capital of $350,000 taken from the bank’s undivided profits and represented by 5,600 shares of stock of the holding company to be distributed to the bank’s shareholders. The holding company would then organize a new national bank, the Crescent City National Bank, with the $350,000 it had on hand. Whitney-New Orleans would then be merged into the Crescent City and the resulting bank would be known as Whitney-New Orleans. The new Whitney-New Orleans bank would declare a dividend of $650,000 from its undivided profits which would go to its owner, the holding company. The latter would then organize, with this $650;000, another national bank, Whitney-Jefferson, which, would be located in Jefferson Parish. The net result of the maneuver would be that *416the original stockholders of the old Whitney-New Orleans ■would own the holding company which in turn would own and operate both banks, i. e., the new Whitney-New Orleans and Whitney-Jefferson.
Approval of the stockholders of Whitney-New Orleans was first obtained, over 88% of the shares voting for the plan. It. was then submitted to the . Comptroller who on October 3, 1961, gave preliminary approval, subject to the action of the Federal Reserve Board and the consummation of the various transactions outlined. On July 14, 1961, applications were filed with the Board; thereafter notice was published in the Federal Register and three potential competitors expressed opposition. However, none of the respondents appeared or made any filings. After receiving the advice of the Comptroller pursuant to § 3 (b) of the Bank Holding Company Act of 1956, 12 U. S. C. § 1842 (b) (1958 ed.), which was favorable, the Board ordered a public proceeding to be held on January 17, 1962, “to afford further opportunity for ibhe expression of views and opinions by interested persons.” At this hearing testimony was heard and opposition submitted by objecting stockholders and potential competitors but none of the respondents took any part therein. The Board by a 6-1 vote approved the plan on May 3, 1962. This suit was filed on June 9, 1962. Thereafter on June 13, 1962, a petition for reconsideration was filed with the Federal Reserve Board by two of the respondent banks and was later joined by the Bank Commissioner of Louisiana. This application was denied on the ground of untimeliness and because the Board found it “without substantial merit.” The application for judicial review was then filed on June 30, 1962, with the Court of Appeals for the Fifth Circuit pursuant to § 9 of the Bank Holding Company Act of 1956, 12 U. S. C. § 1848 (1958 ed.).. That case, as we have said, awaits our decision here.
*417II.
The Bank Holding Company Act of 1956 prohibits a bank holding company from acquiring ownership or control of a. national bank, new or existing, without the approval of the Federal Reserve Board. 12 U. S. C. § 1842 (a) (1958 ed.). Provision is made for a full administrative proceeding before the Board in which all interested persons may participate and the views of the interested supervisory authorities may be obtained. 12 U. S. C. § 1842 (b) (1958 ed.). The Board’s determination is subject to judicial review by specified courts of appeals which must accept the administrative findings if they are supported by substantial evidence. 12 U. S. C. § 1848 (1958 ed.).
Thus, if the plan here merely encompassed the acquisition of an existing national bank already enjoying the Comptroller’s certificate of authority to do business, only the approval of the Board would be necessary, and the Comptroller would be involved only to the extent that he provided his views and recommendations.,' But, of course, this is not the case. Here it is a newly created national bank not yet authorized to do business that is sought to be organized and operated by a bank holding company. This authorization is the sole function of the Comptroller, requiring his. appraisal of the bank’s assets, directorate, etc., and his action is therefore necessary in addition to that of the Board approving the organization of the bank by the holding company. It is against , this background that we inquire whether the questions raised by the respondents' in the District Court against the “Comptroller were cognizable, by the Board.
III.
We think it clear that the thrust of respondents’ complaint goes to the organization of Whitney-Jefferson by the holding company rather than merely thé issuance of *418authority to Whitney-Jefferson to do business. Respondents’ chief contention is that Whitney-Jefferson would be but a branch bank of Whitney-New Orleans. But this #ould not follow simply by virtue of the issuance of authority for the opening of the new bank. Such a situation would occur, if at all, when the Board approved the holding company plan including the organization of Whitney-Jefferson as its subsidiary. Thus, it is the plan of organization by the holding company which lies at the heart of respondents’ argument.
The Bank Holding Company Act of 1956 directs the Board to consider both “the convenience, needs, and welfare of the communities and the area concerned” and “whether or nut the effect of such acquisition . . . would be to expand the size or extent of the bank holding company system involved beyond limits consistent with ( . . the public interest . . . .” 12 U. S. C. §§ 1842 (c)(4) and (5) (1958 ed.). Clearly, if respondents’ argument that Whitney-Jefferson would be a branch bank were sound, the Board would be compelled to disapprove the arrangement, for a plan of organization, violative of federal law would hardly be consistent with the statutory command that no bank holding company should be expanded beyond the limits consistent with the public interest.
The respondents also argue that the operation of Whitney-Jefferson is barred by a valid state law prohibiting any subsidiary of a bank holding company from opening for business “whether or not, a charter, permit, license or certificate to open for business has already been issued.” Here, as with their first argument, respondents’ quarrel is in actuality not merely with the opening of the bank, but rather with its opening as a subsidiary of Whitney Holding Corporation. Otherwise, the opening would not be prohibited by Louisiana law. Again, *419the Board could not approve a holding company arrangement involving the organization and opening of a new bank if the opening of the bank, by reason of its ownership by a bank holding company, would be prohibited by a valid state law.5
We therefore conclude that respondents’ complaint tenders issues cognizable by the Federal Reserve Board, and we turn to the question of whether such objections must first be raised there.
IY.
We believe Congress intended the statutory proceedings before the Board to be the sole means by which questions as to the organization or operation of a new bank by a. bank holding company may be tested. Admittedly the acquisition of an existing bank is exclusively within the jurisdiction of the Board. We know of no persuasive reason for finding a different procedure required where it is a new bank that is sought to be organized and operated simply because the Comptroller there performs a function in addition to that of the Board, i. e., the issuance of the certificate to do business.
Moreover, the Bank Holding Company Act makes the Board’s approval of a holding company arrangement binding upon the Comptroller. A provision designed to make the decision of the Comptroller, rather than that of the Board, final was rejected when the Act was being framed. 101 Cong. Réc. 8186-8187. This legislative history clearly indicates that Congress had no intention to give the Comptroller a veto over the Board in such cases. It follows that it is the exclusive function of the Board to act in such cases and contests must be pursued *420before it, not before the Comptroller. This position is also supported by legislative history which shows that Congress rejected a proposal for a de novo review in the district courts of Board decisions on holding company proposals. Compare 12 U. S. C. § 1848 (1958 ed.) and S. Rep. No. 1095, pt. 1, 84th Cong., 1st Sess., 9, and pt. 2, 84th Cong., 2d Sess., 5, with § 9 of H. R. 6227, 101 Cong. Rec. 8187, and H. R. Rep. No. 609, 84th Cong., 1st Sess., 22, 25-26. Such a procedure would have been similar to that employed here against the Comptroller by respondents. However, the Congress decided otherwise, providing instead for review in the courts of appeals based on the facts found by the Board supported by substantial evidence. We think these congressional actions point clearly to the conclusion that it intended that challenges to Board approval of the organization and operation of a new bank by a bank holding company be pursued solely as provided in the statute.
This view is confirmed by our cases holding that where Congress has provided statutory review procedures designed to permit agency expertise to be brought to bear on particular problems, those procedures are to be exclusive. See, e. g., Callanan Road Improvement Co. v. United States, 345 U. S. 507 (1953); Myers v. Bethlehem Shipbuilding Corp., 303 U. S. 41 (1938); Texas & Pac. R. Co. v. Abilene Cotton Oil Co., 204 U. S. 426 (1907). Congress has set out in the Bank Holding Company Act of 1956 a carefully planned ánd comprehensive method for challenging Board determinations. That action by Congress was designed to permit an agency, expert in banking matters, to explore and pass on the ramifications of a proposed bank holding company arrangement. To permit a district court to make the initial determination of a plan’s propriety would substantially decrease the effectiveness of the statutory design. As we stated in *421Far East Conference v. United States, 342 U. S. 570 (1952):
“[I]n cases raising issues of fact not within the conventional experience of judges or cases requiring the exercise of administrative discretion, agencies created by Congress for regulating the subject matter should not be passed over. This is so even though the facts after they have been appraised by specialized competence serve as a premise for legal consequences to be judicially defined. Uniformity and consistency in the regulation of business entrusted to a particular agency are secured, and the limited functions of review by the judiciary are more rationally exercised, by preliminary resort for ascertaining and interpreting the circumstances underlying legal issues to agencies that are better equipped than courts by specialization, by insight gained through experience, and by more flexible procedure.” At 574-575.
Here the Court of Appeals held that the relationship of Whitney-Jefferson to Whitney-New Orleans woüld be that of a branch bank notwithstanding the fact that they were organized under a bank holding company arrangement. The District Court found the proposal barred by Louisiana Act No. 275 of 1962. We believe that these are the very types of questions that Congress has committed to the Board, and we hold that the Board should make the determination of the plan’s propriety in the first instance. The soundness of this conclusion is especially evident when it is remembered that the Board has played a vital role in the development of the national banking laws, a role which makes its views of particular benefit to the courts where ultimately the validity of the arrángement will be tested.
Moreover, we reject the notion that the Board’s determination may be collaterally attacked in the District *422Court by a suit against the Comptroller. Opponents of the opening of a new bank by a bank holding company must first attack the arrangement before the Board, subject only to review by the Courts of Appeals. City of Tacoma v. Taxpayers of Tacoma, 357 U. S. 320 (1958); United States v. Corrick, 298 U. S. 435 (1936). That Congress has not expressly provided that the statutory procedure is to be exclusive does not require a different conclusion. For Congress has expressly rejected proposed provisions for review in these cases in the district, courts. Moreover, it has enacted a specific statutory scheme for obtaining review, and where Congress has directed such a procedure as that found in the Bank Holding Company Act of 1956, the doctrine of exhaustion of administrative remedies comes into play and requires that the statutory mode of review be adhered to notwithstanding the absence of an express statutory command of exclusiveness.
A rejection of this doctrine here would result in unnecessary duplication and conflicting litigation. Some opponents might participate before the Board; others might well wait for termination of the Board’s activities and then sue in the district courts for an injunction accomplishing the same ultimate end. The different records, applications of different standards and conflicting determinations that Tyould surely result from such duplicative procedures all militate in favor of the conclusion that the statutory steps provided in the Act are exclusive.
Respondents attempt to ground support for the District Court’s asserted jurisdiction on the Administrative Procedure Act, 5 U. S. C. §§ 1001, 1009 (1958 ed.), which provides that “Every . . . final agency action for which there is no other adequate remedy in any court shall be subject to judicial review, . . .” The short answer to this, of course, is, as we have pointed out, that the Comptroller’s action in issuing a certificate is not “final”; it is *423the action of the Board permitting consummation of the organization of the new bank by the holding company that is final, and its decision is subject to review only in the courts of appeals, not before the Comptroller or in the district courts.
Furthermore, the respondents contend that no provisions for review of the Comptroller’s decision are included in any of the pertinent Acts; indeed, they say, he has admitted as much in this case. Respondents again overlook the fact that the decision here approving the organization of the Whitney-Jefferson Bank is not for the Comptroller. He only checks the condition of the new bank, its capital, directorate, etc., as provided by the National Bank Act. 12 U. S. C. § 26 (1958 ed.). That, the action of the Comptroller is not final is made crystal-' clear here where, assuming he should issue the desired authority to Whitney-Jefferson to open for business, it would be completely negated in the event that on review the Board’s approval of the holding company plan was reversed. As we have said, it is the ownership of Whitney-Jefferson by the holding company that is at the heart of the project, not the permission to open for business which is acted upon routinely by the Comptroller once the authority to organize is given by the Board.
We do not say that under no circumstances may the Comptroller be restrained in equity from issuing a certificate to a new bank. We do hold, however, that where a bank holding company seeks to open a new bank pursuant to a plan of organization the propriety of which must, under the Bank Holding Company Act, be determined by the Board, the statutory review procedure set out in the Act must be utilized by those dissatisfied with, the Board’s ruling despite the fact that the Comptroller’s certificate is a necessary prerequisite to the opening of the bank. Otherwise the commands of the Congress would be completely frustrated.
*424V.
It is for this reason that the Fifth Circuit case reviewing the Board’s former action should be remanded to it. Section 3 (5) of Louisiana Act No. 275 of 1962, La. Rev. Stat. § 6:1003 (.5) (1962 Supp.), provides that “It shall be unlawful ... for any bank holding company or subsidiary thereof tct open for business any bank not now opened for business, whether or not, a charter, permit, license or certificate to open for business has already been issued. ...”6 This Act was passed on July 10, 1962, several days after the Board denied respondents’ petition for reconsideration. It was not considered by the Board as one of the factors in the application for registration as a bank holding company. The petition for review, attacking the Board’s determination before the Fifth Circuit, is, of course, not before this Court. Nevertheless it is perfectly obvious that the two cases are closely related. We have discussed earlier the importance which Congress has attached in the Bank Holding Company Act of 1956 to the principle that the Federal Reserve Board, with its expertise in the banking field, should make the initial determination of the propriety of the plan of organization giving full consideration to thp legislative guidelines set out in the Act. Section 7 of the Bank Holding Company Act of 1956, 12 U. S. C. § 1846 (1958 ed.), provides:
<fThe enactment by the Congress of this chapter shall not be construed as preventing any State from exercising such powers and jurisdiction which it now has or may hereafter have with respect to banks, bank holding companies, and subsidiaries thereof.”
*425Here the Board has not had an opportunity to determine the applicability and effect of the new Louisiana statute. We are of the opinion that this is the very type of question that Congress envisioned as being resolved in the first instance by the Board. In line with this legislative policy, and in the interest of judicial economy and proper administrative practice, the Board should have an opportunity to act in the light of Louisiana’s new law. It is for this reason that we give the parties not exceeding 60 days to proceed before the Court of Appeals for the Fifth Circuit to secure such a remand.
It appears from the record that the Comptroller advised the District Court that “if the preliminary injunction entered herein is vacated, and if Whitney National Bank in Jefferson Parish so requests, inasmuch as upon a careful examination of the facts within my knowledge it appears that such association is lawfully entitled to commence the business of banking, it is my present intention to issue such certificate.” R. 310. Our disposition, however, does not free the Comptroller to authorize the opening of the bank, for the Court of Appeals has the power to prevent the issuance of the certificate pending final disposition of the matter. As the Comptroller himself notes, the certificate may issue only when the applicant is “lawfully entitled to commence the business of banking.” . It would not be “lawfully entitled” to open in the event the Court of Appeals stayed the order of approval of the Federal Reserve Board pending final disposition of the review proceeding. The court, of course, is empowered under 28 U. S. C. § 1651 (1958 ed.) to do so. See Scripps-Howard Radio, Inc. v. FCC, 316 U. S. 4 (1942); Board of Governors of Federal Reserve System v. Transamerica Corp., 184 F. 2d 311 (1950). In the event such a stay were issued we feel certain that the Comptroller would not *426attempt to issue the certificate.7 But if he did and the Court of Appeals should find it necessary to take direct action to maintain the status quo and prevent the opening of the bank, it has ample power to do so. The Whitney Holding Corporation, a party presently before the Fifth Circuit, owns and controls both banks and through it the court could reach the technical applicant, Whitney-Jefferson. We think it clear that the Court of Appeals can appropriately fashion an order designed to compel Whitney Holding Corporation not only to refrain from acting itself but to require that its subsidiary. refrain from requesting the certificate and from opening the bank. - Indeed, upon proper application by the respondents the Court of Appeals could stay the hand of Whitney-Jefferson itself since it is within the jurisdiction of that court.. It is sufficient to say. here that the Fifth Circuit’s power to protect its jurisdiction is beyond question.
In the instant proceedings, the judgments of the Court of Appeals are reversed and the case is remanded to the District Court with direction to dismiss the complaint. Issuance of our judgment is stayed for 60 days to afford the parties opportunity to proceed as outlined in this opinion.
It is so ordered.
La. Rev. Stat. § 6:54 (1950) prohibits banks from opening branch offices in parishes other than their home parish, and these geographical limitations are. made applicable to national banks by §23 of the Banking Act of 1933, 12 U. S'. C. § 36 (c) (2) (1958 ed.).
Section 9 of the Bank Holding Company Act of 1956, 12 U. S. C. § 1848 (1958 ed.) provides for review of Federal Reserve Board action in the Court of Appeals.
12 U. S. C. §1846 (1958 ed.) provides:
“The enactment by the Congress of this chapter shall not be construed as preventing any State from exercising such powers and jurisdiction which it now has or ma^ hereafter have with respect to banks, bank holding companies, and subsidiaries thereof.”
The Board approval was on May 3, 1962, while Louisiana Act No. 275 of 1962, La. Rev. Stat. §§6:1001-6:1006 (1962 8upp.), did not become effective until July 10, 1962, .at which time the Board’s approval was not final, being on review in the Court of Appeals for the Fifth Circuit in Bank of New Orleans & Trust Co. et al. v. Board of Governors of the Federal Reserve System, No. 19788 (C. A. 5th Cir.).
The Board has indicated that in its view §7 of the Act permits the States to prohibit the formation of bank holding companies. See Trans-Nebraska Co., 49 Fed. Res. Bull. 633 (1963).
Our disposition obviates the necessity of passing upon the contention of the petitioners that Louisiana’s law is invalid under the Supremacy Clause and the Equal Protection Clause.
Aá we have said there may be exceptional circumstances under which equity may stay the hand of the Comptroller in issuing a certificate to a new bank. Obviously if the holding company application has not been acted upon by the Board, the Comptroller would have no power to issue the certificate and his persistence in doing so would subject him to the temporary orders of a court of competent jurisdiction.
Such an action would not require an impermissible collateral attack on the merits of the proposal, which are reserved for the Board. Its sole purpose would be to prevent the Comptroller from acting without the Board’s approval — an objective that would protect the jurisdiction of the reviewing court of appeals rather than run afoul of it.