concurring in part and dissenting in part:1
In this Freedom of Information Act (FOIA) suit appellant John D. Marks, a former State Department employee, seeks from the Central Intelligence Agency (CIA) certain documents containing information about himself. In response to Marks’ original FOIA request the Agency released some material concerning him, but withheld certain portions of its files on Marks claiming *1004Exemptions 1, 3, or 7, depending on the document.2 The District Court sustained the Agency’s action on the basis of the exemptions claimed.3 Marks appeals from the District Court’s conclusions as to five documents withheld pursuant to Exemptions 3 and 7. The Agency has recently released one of these documents.4
Unlike Judge Leventhal, I would hold now, as this court did in Weissman v. CIA, 184 U.S.App.D.C. 117, 119-121, 565 F.2d 692, 694-696 (1977), a case indistinguishable from this case, that Exemption 7 is inapplicable to the remaining four documents because they were not “compiled for law enforcement purposes” in a “lawful national security intelligence investigation,” 5 U.S.C. § 552(b)(7)(D) (1976), in that they were compiled in an unlawful domestic intelligence investigation by the CIA of a United States citizen. 50 U.S.C. § 403(d)(3) (1970).5 *1005I agree with Judge Leventhal that the District Court’s consideration of the Agency’s Exemption 3 claim was inadequate. I would remand this case for further proceedings under Exemption 3 consistent with this opinion.
I. BACKGROUND
From 1966 to 1970 appellant Marks was employed by the State Department. During this time he was granted a top secret State Department security clearance and also a top secret liaison clearance from the CIA.6 In 1970 Marks left the State Department and became Executive Assistant to Senator Clifford Case of New Jersey, a member of the Senate Foreign Relations Committee. While serving in this capacity Marks was instrumental in an investigation of the CIA’s covert support of Radio Free Europe. In 1972 he took a leave of absence from Senator Case’s office to work on a book about the CIA with Victor Marchetti, a former CIA employee. After the book was published in 1974 Marks joined the Center for National Security Studies in Washington, D.C., where he is still employed.
In 1973 the CIA became concerned about Marks’ work with Marchetti on the book, and its “Office of Security undertook a national security intelligence investigation” of Marks.7 In March 1975 Marks made a FOIA request of the CIA for “any files, dossiers, computer printouts, or other documents it now has or has ever had on me as an individual citizen, Foreign Service Office, Senate aide, journalist, writer, or Associate of the Center for National Security Studies.”8 The Agency identified 41 such documents and released 12 in their entirety, but withheld six in their entirety and portions of 22 others. One document was referred to the State Department for disposition.
Marks, seeking the materials withheld by the CIA, brought this suit in District Court in October 1975. During the litigation his request was narrowed to 14 documents. The District Court refused to conduct an in camera inspection of the disputed materials and sustained the Agency’s refusal to disclose the documents on the basis of Exemptions 1, 3, or 7. As mentioned above, this appeal focuses on four documents, which the Agency has withheld in reliance on Exemptions 3 and 7. Since the District Court in affirming the Agency’s action dealt more extensively with Exemption 7, that Exemption will be examined first.
II. EXEMPTION 7
The relevant portion of Exemption 7 applies to “investigatory records compiled for law enforcement purposes, but only to the *1006extent that the production of such records would * * * (D) disclose the identity of a confidential source and, in the case of a record compiled * * * by an agency conducting a lawful national security intelligence investigation, confidential information- furnished only by the confidential source * * *5 U.S.C. § 552(b)(7)(D) (1976). The CIA contends that the four documents sought in this appeal are covered by this exemption because they were products of a lawful national security investigation and because releasing any portion of them would reveal the identity of confidential sources and information obtained solely from confidential sources.9 Appellant argu*1007es that Exemption 7 does not apply to these documents because they were not compiled for law enforcement purposes in a lawful national security investigation. The District Court rejected appellant’s position, holding that the CIA’s investigation of Marks was a “lawful national security intelligence investigation” under Exemption 7(D).
The basic issue governing the application of Exemption 7 in this case is thus the scope of the CIA’s legal authority to investigate persons in Marks’ situation. This issue has two aspects: first, in accordance with the general prescription of Exemption 7, whether the documents were “compiled for law enforcement purposes”; and, second, in accordance with the language of subsection (D), whether the documents were compiled in a “lawful national security investigation.” These two aspects of the issue in fact collapse into a single determination. That is to say, in order for the CIA to have fulfilled the requirement that the documents be “compiled for law enforcement purposes,” the Agency must have been engaged in a “lawful national security investigation,” for only in such an investigation would the documents in suit have been “compiled for law enforcement purposes.” Hence our inquiry here must focus on the lawfulness of the CIA’s investigation of appellant.
Two months after the District Court’s decision in this case this court considered the CIA’s authority to conduct domestic investigations of American citizens in Weissman v. CIA, 184 U.S.App.D.C. 117, 119-121, 565 F.2d 692, 694-696 (1977), a FOIA case quite similar to the one now before us. The CIA had investigated the plaintiff in Weissman without his knowledge as a potential employee and had refused to disclose certain documents compiled in its investigation, relying in part on Exemption 7.10 The question before this court in Weissman, as in this case, was whether the CIA’s investigation was a “lawful national security intelligence investigation.”
We held in Weissman that the CIA’s investigation was not lawful and that the Agency could therefore not rely on Exemption 7 to refuse the plaintiff’s FOIA request. Our conclusion was based on an analysis of the language and legislative history of the statute creating the CIA. We noted that the “National Security Act of 1947 * * * specifically provided that the ‘Agency shall have no police, subpena, law-enforcement powers, or internal-security functions.’ 50 U.S.C. § 403(d)(3).” 184 U.S.App.D.C. at 120, 565 F.2d at 695.11 We, also recognized the reason behind this ex*1008press limitation on the CIA’s authority: Congress’ firm resolve to insure that the CIA’s “power that flows from money and stealth” could not be turned loose in domestic investigations of Americans.12 “Congress wisely sought at the outset to make sure that when it released the CIA genie from the lamp, the Agency would be prevented from using its enormous resources and broad delegation of power to place United States citizens living at home under surveillance and scrutiny.” Id. We were not persuaded by the CIA’s argument, also relied on by the Agency and by the District Court in this case, that when, in another provision of Section 403(d)(3), Congress made the Director of Central Intelligence “responsible for protecting intelligence sources and methods from unauthorized disclosure,” it meant to grant the CIA the very same authority it had just specifically denied it.13
*1009The CIA urges us to distinguish Weiss-man on its facts because the target of the CIA’s investigation in Weissman had “no contact” with the Agency, while Marks, although not a CIA employee, did serve as a liaison, between the CIA and the State Department and held a CIA security clearance. Indeed, Judge Leventhal’s opinion, see Opinion of Leventhal, J., 191 U.S.App.D.C. at-, 590 F.2d at 1001-1002, although professing not to address the legal issues under Exemption 7, alludes to this perceived distinction between the present case and Weissman. His opinion in fact travels an additional step by intimating not only that CIA “personnel” may be subject to lawful domestic CIA intelligence investigations— this possibility was left open in Weissman, see Weissman v. CIA, supra, 184 U.S.App.D.C. 121, 565 F.2d at 696 — but also that “former employees [of the CIA] or persons such as a State Department employee with top-secret liaison clearance” may be as well. Opinion of Leventhal, J., 191 U.S.App.D.C. at -, 590 F.2d at 1001.
Judge Leventhal’s formulation is disturbingly open-ended; it seemingly invites CIA investigations of employees of other agencies, so long as they have a CIA clearance somewhere in their backgrounds, even if, as in the present case, the individual is or has been a key congressional aide. See text and note at note 17 infra. This is hardly in keeping with Congress’ expressed determination to keep the CIA out of domestic investigations, a determination that requires the same result both in this case and in Weissman. See 50 U.S.C. § 403(d)(3) (1970); text and notes at notes 11-13 supra. Distinguishing between the investigation here and that in Weissman would create an uncertain line between legitimate and illegitimate national security investigations. Although Weissman to his own knowledge had “no contact” with the CIA, the Agency had conducted a continuing “background” investigation of him as a possible candidate for employment for five years, accumulating a volume of material at least as great as that generated in the Agency’s investigation of Marks.14 Such “background” investigations of prospective employees are among those the CIA has traditionally claimed it is authorized to conduct.15
On the other hand, to hold, as the CIA contends, that the Agency may investigate any person who has ever had “contact” with the Agency would expand the CIA’s authority far beyond the limits intended by Congress.16 At the time he was investigated *1010Marks had not had “contact” with the CIA for at least three years and had been working for a Senator serving on a committee with responsibilities for overseeing activities of the Agency. The potential for abuse in an investigation of someone in Marks’ position is all too obvious and exemplifies the kind of danger Congress resolved to avoid by limiting the CIA’s domestic investigative authority.17 The majority opinion nonetheless pirouettes through this veritable mine field of troubling eventualities without confronting the spectre of CIA investigations of key legislative aides.
The conclusion that Congress has not authorized the CIA to conduct investigations such as the one in this case is reinforced by our observation that Congress has provided ample resources outside the CIA to satisfy any legitimate investigatory needs the Agency may have in circumstances such as those involved in this case. Investigations of American citizens within the United States are the responsibility of the Federal Bureau of Investigation (FBI), as the CIA itself apparently recognized in its earliest interpretation of its authorizing legislation.18 The government has not contended in either this case or Weissman that the resources of the FBI were in any way inadequate to meet the CIA’s investigatory needs, nor would such a finding serve to override the express intent of Congress.
Furthermore, a decision that the documents in suit were not “compiled for law enforcement purposes” would not result in disclosure of any information that could harm the legitimate functioning of the Agency or endanger national security. The Agency need not rely on Exemption 7 to protect such sensitive matters; other exemptions are quite adequate. Any matter whose release “could reasonably be expected to cause damage to the national security” can be classified pursuant to Executive order and withheld under Exemption 1. The CIA has apparently not found it appropriate to classify the four documents involved in this appeal, so Exemption 1 is not available in this case.
III. EXEMPTION 3
The CIA also urges this court to affirm nondisclosure on the basis of Exemption 3 alone and to avoid reaching the Exemption 7 issue. As the majority opinion indicates, however, we are unable to follow this course, because the District Court’s consideration of the Agency’s Exemption 3 claim does not reflect the quality of de novo review required by the statute, see Ray v. Turner, 190 U.S.App.D.C. -, -, 587 F.2d 1187, 1196 id., 190 U.S.App.D.C. at-, *1011587 F.2d at 1219-1221 (Wright, C. J., concurring), and does not indicate whether all the information withheld by the CIA, with the approval of the District Court, under Exemptions 3 and 7 could be withheld under Exemption 3 alone, see Weissman v. CIA, supra, 184 U.S.App.D.C. at 123, 565 F.2d at 698.19 Moreover, the District Court failed to establish whether any portions of the documents are segregable and therefore subject to disclosure. On remand, as the majority opinion instructs, the District Court must undertake this inquiry.
The District Court rejected appellant’s motion for in camera inspection of the withheld documents, and its opinion on Exemption 3 dealt only with the legal issue whether Section 403(d)(3) of the National Security Act qualified as a statute specifically exempting materials from disclosure under the pre-amendment version of Exemption 3.20 Although we have recently held that this statute still qualifies under Exemption 3 as amended, Ray v. Turner, supra, 190 U.S.App.D.C. at -, 587 F.2d at 1196, the District Court’s inquiry cannot end with this conclusion. As I pointed out in Ray, the District Court must also determine the conditions for exemption established by the exempting statute and decide whether the particular documents requested satisfy these conditions. Id., 190 U.S.App.D.C. at -, 587 F.2d at 1219-1221 (Wright, C. J., concurring). This determination may well require the in camera inspection the District Court declined to undertake in this case.21 Since the District Court’s opinion does not reflect an adequate analysis of the factual issues involved, its consideration on remand should follow the procedures for de novo review outlined in Ray v. Turner. Id., 190 U.S.App.D.C. at -, 587 F.2d at 1219-1221 (Wright, C. J., concurring).
. In view of our differences over the extent to which we should consider Exemption 7 of the FOIA, 5 U.S.C. § 552(b)(7) (1976), on this appeal, I have decided to state my position separately and in full. For a discussion of why Exemption 7 requires full treatment now, see note 5 infra.
. Affidavit of Robert S. Young, Freedom of Information Coordinator, CIA, April 23, 1976, Joint Appendix (JA) 18-21:
. Marks v. CIA, 426 F.Supp. 708 (D.D.C.1976).
. The Agency has released a previously withheld portion of Document 10, which had been withheld under Exemption 7(E) because it would allegedly “disclose investigative techniques and procedures.” 5 U.S.C. § 552(b)(7)(E) (1976). The Agency formerly described the portion now released as “information which is a product of the national security intelligence investigation and which if released or described in any manner would disclose the intelligence method and the investigative technique utilized * * *Affidavit of Robert Gambino, Director of Security, CIA, April 23, 1976, JA 30. The now released portions of Document 10 contain photographs of appellant Marks and other individuals on the street outside a restaurant. At least on their face such photographs do not qualify as the kind of investigative techniques and procedures Congress intended to protect from disclosure. Congress expressly directed that Exemption 7(E) “should not be interpreted to include routine techniques and procedures already well known to the public * * * H.R. Rep. No. 93-1380, 93d Cong., 2d Sess. 12 (1974). It is noted that the government has not only released this portion of Document 10, but has also declined to press its Exemption 7(E) claims with regard to the other four contested documents. See appellees’ brief at 12 n.4.
The Agency’s descriptions of the four documents in dispute may be found in note 9 infra.
. In spite of the District Court’s holding that the relevant documents are exempt under both Exemption 3 and Exemption 7, Marks v. CIA, supra note 3, 426 F.Supp. at 710-712, Judge Leventhal’s opinion refuses to confront the legal issues raised by the CIA’s reliance on Exemption 7 in this case. Since it is conceivable that the District Court on remand may find all of the relevant documents entirely covered by Exemption 3, he reasons in one portion of his opinion, there exists “the possibility that there will be no need to consider the legal issues under Exemption 7.” Opinion of Leventhal, J., 191 U.S.App.D.C. at -, 590 F.2d at 1000. “The matter,” he continues, “calls for judgment in judicial administration.” Id. Yet in another portion of his opinion Judge Leventhal suggests that lack of ripeness for decision, not judicial economy, is at the core of his reluctance to decide the legal issues raised by Exemption 7. Id., 191 U.S.App.D.C. at-, 590 F.2d at 1003. Both reasons for ignoring the legal issues relating to Exemption 7 raised on this appeal are unpersuasive.
As to judicial economy, nearly three and one-half years have passed since appellant in this cáse first wrote the CIA in his attempt to ascertain what information the Agency had gathered on him. Affidavit of Robert S. Young, supra note 3, JA 18 (quoting letter sent by appellant to CIA on March 10, 1975).' Almost three years have expired since appellant first filed this suit under the FOIA. Marks v. CIA, supra note 3, 426 F.Supp. at 709 (suit filed on October 20, 1975). And nearly two years have passed since the District Court’s judgment in the autumn of 1976. Yet appellant is now confronted with a “judgment in judicial administration” that, notwithstanding his 40-month trek through the recesses of the Freedom of Information Act, consigns him not only to á second round in the District Court, but also to the possibility of a third round, in the event the District Court on remand finds that portions of the documents are segregable (not covered by Exemption 3) but then misapplies Exemption 7. Since the District Court has already found that not only Exemption 3 but Exemption 7 as well applies to the four documents under review, what acceptable judgment in judicial administration can support our avoiding decision with respect to Exemption 7 now, so that, if necessary, on this remand the District Court can decide as to both Exemptions 3 and 7 and thus avoid the possibility of unnecessary further remands?
Delay, such as that which the majority opinion may cause in this case, is particularly inappropriate in a FOIA suit, since Congress has mandated that such cases be expedited. See 5 U.S.C. § 552(a)(3) (1976) (requiring agencies to make records available “promptly”); id. § 552(a)(4)(D) (requiring District Courts to assign FOIA cases to be heard on the “earliest *1005practicable date”; FOIA cases “take precedence on the docket over all cases” except those the court considers of greater importance). It is submitted that judgments in judicial administration must be subordinated to the will of Congress, which, in the words of the Supreme Court, is to provide aggrieved citizens “a speedy remedy in district courts.” EPA v. Mink, 410 U.S. 73, 79, 93 S.Ct. 827, 832, 35 L.Ed.2d 119 (1973). This court can comply with the clear mandate of Congress to expedite FOIA cases only by addressing both Exemption 3 and Exemption 7 now, since the District Court held that the four documents in suit were protected from production under both exemptions.
The majority also expresses concern about the ripeness of the Exemption 7 issues in this case. Exemption 7, with certain qualifications indicated therein, exempts from disclosure under FOIA documents “compiled for law enforcement purposes.” 50 U.S.C. § 403(d)(3) provides, inter alia, that the CIA “shall have no police, subpena, law-enforcement powers, or internal security functions.” See Weissman v. CIA, 184 U.S.App.D.C. 117, 119-121, 565 F.2d 692, 694-696 (1977). Thus the question is whether the CIA had statutory authority to compile the documents in suit for law enforcement purposes. If it did not, obviously Exemption 7 does not apply to them. This, of course, is a legal question which, considering'the extended character of this litigation, in my judgment is more than ripe, rather than unripe, for adjudication now.
. Affidavit of John D. Marks, May 26, 1976, JA 41. The facts in this paragraph are drawn from this affidavit and are uncontested.
. Affidavit of Robert W. Gambino, supra note 4, JA 23.
. Affidavit of Robert S. Young, supra note 2, JA 18.
. Affidavit of Robert S. Young, supra note 2, JA 20-21. The four disputed documents are described by the Agency as follows:
6 Memorandum for Director of Security which transmits a report from a confidential source, who is specifically identified both by name and context, concerning plaintiff and his plan to reveal the identities of foreign, covert CIA employees and to provide this information to a group identified as the Fifth Estate.
This document was denied in its entirety. It corisists of information which specifically reveals the identity of a confidential source and discloses the method by which the confidential source gathered such information and transmitted such to the CIA. The information is of such a nature that disclosure of any part would immediately implicate the source. Names and organizational components of CIA employees are also contained therein.
7 Office of Security memorandum which concerns a report by a former employee on plaintiffs efforts to recruit him and secure classified information from him.
This document was denied in its entirety. Since the information involved is directly concerned with plaintiff’s specific discussions with a former employee of the CIA, disclosure would enable plaintiff to identify the person, thus compromising the confidential intelligence source. The report also contains substantive information from the former employee’s personnel, medical, and other files which was included in order to evaluate the reliability of the information provided.
* * *
14 Office of Security memorandum in which a confidential source, who is identified, reports that plaintiff has provided substantial classified information, including the names and addresses of CIA employees assigned to foreign countries, tó the publication Counterspy, who will reveal this information at an upcoming press conference.
This document was denied in its entirety. It consists solely of information derived from a confidential intelligence source. The substance of the information is so specific that its disclosure would permit the plaintiff to ascertain with near certainty the identity of the source. Further, the source also provides information about another prominent citizen and his active monetary support of the publication Counterspy. This fact is not generally known and its revelation might seriously embarrass such person and would undoubtedly be a serious invasion of his personal privacy.
* * *
29 Memorandum written by the Assistant to the Director and addressed to the General Counsel. In this memorandum a meeting with a senior public media official is recounted in which the General Counsel was advised of certain writings which Mr. Marks intended to submit for publication to a magazine.
This document was denied in its entirety. It identifies the confidential intelligence source by name and position. Further, the information contained therein, which consists of the subject matter of the discussion, would if released reveal the identity of the source by direct implication.
Affidavit of Robert W. Gambino, supra note 4, JA 29-31. See also Supplementary Affidavit of Robert W. Gambino, July 7, 1976, JA 53-54. The Agency also relied on Exemption 7(E) for all four documents and on Exemption 7(C) for *1007Documents 7 and 14. Affidavit of Robert W. Young, supra note 2, JA 20-21. The government does not argue these other exemptions on appeal, claiming that 7(D) is sufficient by itself. Appellees’ brief at 12 n.4. (The government also, perhaps, recognized the weakness of its 7(E) claims, see note 4 supra.)
. The CIA in Weissman, as in this case, also relied on Exemption 3. See Weissman v. CIA, supra note 5, 184 U.S.App.D.C. at 119, 565 F.2d at 694; text and notes at notes 19-21 infra.
. The full text of 50 U.S.C. § 403(d)(3) (1970) reads:
For the purpose of coordinating the intelligence activities of the several Government departments and agencies in the interest of national security, it shall be the duty of the Agency, under the direction of the National Security Council—
******
(3) to correlate and evaluate intelligence relating to the national security, and provide for the appropriate dissemination of such intelligence within the Government using where appropriate existing agencies and facilities: Provided, That the Agency shall have no police, subpena, law-enforcement powers, or internal-security functions: Provided further, That the departments and other agencies of the Government shall continue to collect, evaluate, correlate, and disseminate departmental intelligence: And provided further, That the Director of Central Intelligence shall be responsible for protecting intelligence sources and methods from unauthorized disclosure).]
Although the discussion in text focuses on the Agency’s misplaced reliance on 7(D) — the only Exemption 7 claim relied on by the CIA— it is not clear that the Agency’s activities fall within any of the six subcategories in Exemption 7. Exemption 7 is prefaced by a general prescription that the only materials within its scope are “investigative records compiled for law enforcement purposes.” 5 U.S.C. § 552(b)(7) (1976). As the statutory language quoted above makes clear, Congress denied the *1008CIA any “law-enforcement powers,” which would suggest that the CIA would not be able to avail itself of any of the Exemption’s subcategories. Indeed, this court in Weissman appeared to reach this conclusion. 184 U.S.App. D.C. at 119-121, 565 F.2d at 694-696.
The majority opinion, Opinion of Leventhal, J., 191 U.S.App.D.C. at-, 590 F.2d at 1002, suggests that much may be made of Weiss-man’s refusal to reach the question of the CIA’s power to investigate its own personnel and its presumed consequent ability to withhold files resulting from such investigations under Exemption 7. 184 U.S.App.D.C. at 121, 565 F.2d at 696. The majority apparently overlooks the eminently reasonable inference that the Weiss-man court only reserved judgment on that issue because it was not before the court. Weissman was not an employee of the CIA, although the Agency’s investigation of him was undertaken, without Weissman’s knowledge, with a view to the possibility of hiring him in the future. Even in that situation, seemingly as close a case as may arise to one involving the “personnel” to whom the Weissman court alluded, the court found the CIA’s investigation unlawful and Exemption 7 unavailable to the Agency in its attempt to withhold its information from Weissman. Unlike in the Weissman case, there is no hint in the present case of the CIA’s exercising some aspect of its employment function; rather, the Agency was conducting the very sort of domestic investigation of a United States citizen that Congress sought to preclude. See text and notes at notes 10-13 supra and infra.
. The Agency has been given far-reaching authority to gather information and to conduct intelligence activities abroad. These vital functions are liberally financed and concern national security. * * * The Agency, of course, proceeds in secret. Many of its operations are covert, and since the stakes are high few are in a position to know or to question the manner by which it carries out its work. It has the power that flows from money and stealth. Congress was well aware such activities create a potential for abuse, and chose to limit the Agency’s activities to intelligence gathering abroad. It was unwilling to make it a policeman at home, or to create a conflict between the CIA and the FBI.
184 U.S.App.D.C. at 120, 565 F.2d at 695.
. Id. See Foreign and Military Intelligence: Final Report of the Senate Select Committee to Study Governmental Operations with Respect to Intelligence Activities, S. Rep. No. 94-755, 94th Cong., 2d Sess., Bk. I, at 138-139 (1976):
* * * Despite congressional concern, expressed again and again during hearings and floor debates on the bill, that the CIA was to have no potential for infringing upon the rights of American citizens and that it was to be virtually excluded from acting within the United States, no one questioned whether the sources and methods language would raise problems in this area. The lack of interest in the provision suggests that it was not viewed as conveying new authority to investigate; rather it charged the Director of Central Intelligence Agency with responsibility to use the authority which he already had to protect sensitive intelligence information. This could mean implementing strict security procedures within CIA facilities and conducting background investigations of CIA personnel (although according to the former Agency General Counsel, the CIA first requested that the FBI perform this investigative function; J. Edgar Hoover refused to assume this responsibility on grounds of insufficient personnel within his own Bureau). * * *
(Footnote omitted.) Appellant also calls to our attention two directives from William Colby, who was Director of the CIA during the investigations relevant to this case, restricting the CIA’s investigatory activities:
SUBJECT: [Cases Involving Investigation of Newsmen]
No surveillance, telephone tap, surreptitious entry or other action will be taken by Agency personnel in the United States against United States citizens not connected with CIA, under the claimed authority of *1009“protection of intelligence sources and methods.” This provision of the law lays a charge and duty on the Director and the Agency to act so as to protect intelligence sources and methods. It does not give it authority to take action with respect to other American citizens. If a threat or exposure of intelligence sources and methods occurs, the Agency can appropriately assemble its information on the topic and conduct such steps within its organization as may be appropriate. With respect to outsiders, the appropriate lawful authorities must be approached for assistance on the matter, e. g., the FBI or local police.
Memorandum from William Colby to Deputy Director for Administration, Attachment “Memorandum: [News Leak Investigations]”, 8/29/73, Supplementary Detailed Staff Reports on Intelligence Activities and the Rights of Americans: Final Operations with Respect to Intelligence Activities, quoted in S. Rep. No. 94-755, supra, Bk. Ill, at 730-731 (1976).
SUBJECT: [Cases Involving Surveillance of CIA Employees and Ex-employees]
No surveillance, telephone tap, or surreptitious entry will be conducted against employees or ex-employees of the Agency outside Agency property. In the event that threats to intelligence sources and methods appear from Agency employees or ex-employees, the appropriate authorities will be advised, and the Agency will cooperate with the appropriate authorities in the investigation of possible violation of law.
Memorandum of William Colby, supra, Attachment “Memorandum: [Investigation of CIA Employees and Ex-employees],” quoted in Supplementary Detailed Staff Reports, supra, at 731.
. Compare Weissman v. CIA, supra note 5, 184 U.S.App.D.C. at 118-119, 565 F.2d at 693-694, with Marks v. CIA, supra note 3, 426 F.Supp. at 709.
. See, e. g., note 13 supra; Weissman v. CIA, supra note 5, 184 U.S.App.D.C. at 121 n.8, 565 F.2d at 696 n.8.
. The CIA relies in part on recent Executive orders, which the Agency interprets to sanction the type of investigation undertaken in this case. See appellees’ brief at 20-21; Executive Order 11905 § 4(b)(8), 3 C.F.R. 90, 96 (1977); *1010Executive Order 10236 §§ l-604(a), 1-811, 2-208(c) (Jan. 24, 1978). The short answer to these arguments is that the Executive Branch cannot grant to one of its departments authority that Congress has specifically withheld. In addition, the passages relied on are not free from ambiguity, and the same Executive orders indicate an intent to limit severely the CIA’s role in domestic intelligence investigations. See, e. g., Executive Order 10236, supra, § 1-707 (senior officials in each agency in the Intelligence Community directed, “[i]n any case involving serious or continuing breaches of security, [to] recommend to the Attorney General that the case be referred to the FBI for further investigation”).
. The CIA would have this court distinguish this case from Weissman on the ground that the investigation of Marks was “a non-intrusive one, consisting of information obtained from informants, from public sources, and from CIA operations not directed against Marks.” Appellees’ brief at 15. The government’s claim that “there has been no suggestion that the CIA has engaged in surveillance, wiretapping, surreptitious entry, or other intrusive activities in connection with its investigation of Marks,” id. (emphasis added), is hard to reconcile with the recently disclosed portions of Document 10 (photographs of Marks and others) and with certain allegations in Marks’ affidavit, supra note 4, JA 42-43 (suspicion that former CIA employee answered Marks’ ad as part of CIA investigation). The facts of this case thus illustrate the innate deficiencies of the CIA’s “intrusiveness test” for determining the legality of the Agency’s domestic investigations. When Congress has determined that the dangers of abuse justify a complete ban on domestic investigations of persons like Marks by the CIA, a court may not approve such an investigation merely because the Agency claims that none of the most egregious abuses took place in the particular case.
. See note 13 supra.
. Exemption 7(D) is in at least one sense broader than Exemption 3 because it exempts not only information that would reveal confidential intelligence sources, but also all information provided exclusively by a confidential source, whether or not disclosing the information would reveal the identity of the source. The District Court must therefore inquire more carefully on remand into the possibility of releasing segregable portions of requested documents since Exemption 7 is not applicable. See generally Mead Data Central, Inc. v. Department of the Air Force, 185 U.S.App.D.C. 350, 368-370, 566 F.2d 242, 260-262 (1977).
. Marks v. CIA, supra note 3, 426 F.Supp. at 709-711.
. In denying in camera inspection the District Court found that Marks had failed to prove that the Agency had acted in bad faith. 426 F.Supp. at 710 n. 3. In his affidavit Marks questions the good faith of the Agency as best he can on the basis of the limited information available to him, and he alleges the kind of facts that could easily be checked by a brief examination of the disputed documents. See, e. g., Affidavit of John D. Marks, supra note 4, fl 6, JA 42 — 13 (discussing Document 7). It should be pointed out, however, that there need be no finding of bad faith on the part of an agency as a predicate for de novo, in camera review by the District Court. See Halperin v. CIA, 446 F.Supp. 661, 666-667 (D.D.C.1978) (despite specific finding of agency’s good faith in camera inspection resulted in disclosure of additional information).