constitutional challenges to the Act, but also to hear challenges to the validity of any regulation, and to decide actions involving questions of title, ownership, custody, possession, or control of any tape or materials, or involving payment of any award of just compensation required by § 105 (c) when a decision of that court holds that any individual has been deprived by the Act of private property without just compensation. Section 105 (b) is a severability provision providing that any decision invalidating a provision of the Act or a regulation shall not affect the validity or enforcement of any other provision or regulation. Section 106 authorizes appropriation of such sums as may be necessary to carry out the provisions of the Title.

III

The Scope of the Inquiry

The District Court correctly focused on the Act's requirement that the Administrator of General Services administer the tape recordings and materials placed in his custody only under regulation's promulgated by him providing for the orderly processing of such materials for the purpose of returning to appellant such of them as are personal and private in nature, and of determining the terms and conditions upon which public access may eventually be had to those remaining in the Government's possession. The District Court also noted that in designing the regulations, the Administrator must consider the need to protect the constitutional rights of appellant and other individuals against infringement by the processing itself or, ultimately, by public access to the materials retained. 408 F. Supp., at 334-340. This construction is plainly required by the wording of §§ 103 and 104.*

This interpretation has abundant support in the legislative history of the Act. Senator Javits, one of the sponsors of S. 4016, stated: "[The criteria of § 104 (a)] endeavor to protect due process for individ

Regulations implementing §§ 102 and 103, which did not require submission to Congress, and which regulate access and screening by Government archivists, have been promulgated, 41 CFR § 105-63 (1976). Public-access regulations that must be submitted to Congress under § 104 (a) have not, however, become effective. The initial set proposed by the Administrator was disapproved pursuant to § 104 (b) (1) by Senate Resolution. S. Res. 244, 94th Cong., 1st Sess. (1975); 121 Cong. Rec. 28609-28614 (1975). The Senate also disapproved seven provisions of a proposed second set, although that set had been withdrawn. S. Res. 428, 94th Cong., 2d Sess. (1976); 122 Cong. Rec. 10159-10160 (1976). The House disapproved six provisions of a third set. H. R. Res. 1505, 94th Cong., 2d Sess. (1976). The Administrator is of the view that regulations cannot become effective except as a package and consequently is preparing a fourth set for submission to Congress. Brief for Federal Appellees 8-9, n. 4.

uals who may be named in the papers as well as any privilege which may be involved in the papers, and of course the necessary access of the former President himself.

"In short, the argument that the bill authorizes absolute unrestricted public access does not stand up in the face of the criteria and the requirement for the regulations which we have inserted in the bill today." 120 Cong. Rec. 33860 (1974).

Senator Nelson, the bill's draftsman, agreed that the primary purpose to provide for the American people a historical record of the Watergate events "should not override all regard for the rights of the individual to privacy and a fair trial." Id., at 33851. Senator Ervin, also a sponsor and floor manager of the bill, stated:

"Nobody's right is affected by this bill, because it provides, as far as privacy is concerned, that the regulations of the Administrator shall take into account . . . [the] opportunity to assert any legally or constitutionally based right which would prevent or otherwise limit access to the tape recordings and other materials." Id., at 33969.

See also id., at 33960 (remarks of Sen. Ervin); id., at 37902-37903 (remarks of Rep. Brademas).

The District Court therefore concluded that as no regulations under § 104 had yet taken effect, and as such regulations once effective were explicitly made subject to judicial review under § 105, the court could consider only the injury to appellant's constitutionally protected interests allegedly worked by the taking of his Presidential materials into custody for screening by Government archivists. 408 F. Supp., at 339-340. Judge McGowan, writing for the District Court, quoted the following from Watson v. Buck, 313 U. S. 387, 402 (1941):

"No one can foresee the varying applications of these separate provisions which conceivably might be made. A law which is constitutional as applied in one manner may still contravene the Constitution as applied in another. Since all contingencies of attempted enforcement cannot be envisioned in advance of those applications, courts have in the main found it wiser to delay passing upon the constitutionality of all the separate phases of a comprehensive statute until faced with cases involving particular provisions as specifically applied to persons who claim to be injured. Passing upon the possible significance of the manifold provisions of a broad statute in advance of efforts to apply the separate provisions is analogous to rendering an advisory opinion upon a statute or a declaratory judgment upon a hypothetical case." 408 F. Supp., at 336. Only this Term we applied this principle in an analogous situation in declining to adjudicate the constitutionality of regulations of the Administrator of the Environmental Protection Agency that were in process of revision, stating: "For [the Court] to review regulations not yet promulgated, the final form of which has been only hinted at, would be wholly novel." EPA v. Brown, 431 U. S. 99, 104 (1977). See also Thorpe v. Housing Authority, 393 U. S. 268, 283-284 (1969); Rosenberg v. Fleuti, 374 U. S. 449, 451 (1963); United States v. Raines, 362 U. S. 17, 20-22 (1960); Harmon v. Brucker, 355

U. S. 579 (1958). We too, therefore, limit our consideration of the merits of appellant's several constitutional claims to those addressing the facial validity of the provisions of the Act requiring the Administrator to take the recordings and materials into the Government's custody subject to screening by Government archivists.

The constitutional questions to be decided are, of course, of considerable importance. They touch the relationship between two of the three coordinate branches of the Federal Government, the Executive and the Legislative, and the relationship of appellant to his Government. They arise in a context unique in the history of the Presidency and present issues that this Court has had no occasion heretofore to address. Judge McGowan, speaking for the District Court, comprehensively canvassed all the claims, and in a thorough opinion, concluded that none had merit. Our independent examination of the issues brings us to the same conclusion, although our analysis differs somewhat on some questions.

IV

Claims Concerning the Autonomy of the Executive Branch

The Act was the product of joint action by the Congress and President Ford, who signed the bill into law. It is therefore urged by intervenor-appellees that, in this circumstance, the case does not truly present a controversy concerning the separation of powers, or a controversy concerning the Presidential privilege of confidentiality, because, it is argued, such claims may be asserted only by incumbents who are presently responsible to the American people for their action. We reject the argument that only an incumbent President may assert such claims and hold that appellant, as a former President, may also be heard to assert them. We further hold, however, that neither his separation-of-powers claim nor his claim of breach of constitutional privilege has merit. Appellant argues broadly that the Act encroaches upon the

Presidential prerogative to control internal operations of the Presidential office and therefore offends the autonomy of the Executive Branch. The argument is divided into separate but interrelated parts.

First, appellant contends that Congress is without power to delegate to a subordinate officer of the Executive Branch the decision whether to disclose Presidential materials and to prescribe the terms that govern any disclosure. To do so, appellant contends, constitutes, without more, an impermissible interference by the Legislative Branch into matters inherently the business solely of the Executive Branch.

Second, appellant contends, somewhat more narrowly, that by authorizing the Administrator to take custody of all Presidential materials in a "broad, undifferentiated" manner, and authorizing future publication except where a privilege is affirmatively established, the Act offends the presumptive confidentiality of Presidential communications recognized in United States v. Nixon, 418 U. S. 683 (1974). He argues that the District Court erred in two respects in rejecting this contention. Initially, he contends that the District Court erred in distinguishing incumbent from former Presidents in evaluating appellant's claim of confidentiality. Appellant asserts that, unlike the very specific privilege protecting against disclosure of state secrets and sensitive information concerning military or diplomatic matters, which appellant concedes may be asserted only by an incumbent President, a more generalized Presidential privilege survives the termination of the President-adviser relationship much as the attorney-client privilege survives the relationship that creates it. Appellant further argues that the District Court erred in applying a balancing test to his claim of Presidential privilege and in concluding that, notwithstanding the fact that some of the materials might legitimately be included within a claim of Presidential confidentiality, substantial public interests outweighed and justified the limited