580 F.2d 578 | D.C. Cir. | 1978
Opinion for the Court filed by Circuit Judge ROBINSON.
Appellants were indicted on an assortment of charges stemming from their alleged participation in a gambling operation.
I
For about five years prior to 1974,
Indictments followed,
II
The illegality of the nine 1970-73 wiretaps is not in dispute, for each has already been the subject of a judicial declaration to that effect.
It is clear, however, that to facilitate an accused’s effort to demonstrate that evidence employable against him is contaminated by illegal surveillance previously conducted, the Government, upon request, must “affirm or deny the occurrence of the alleged unlawful act.”
Appellants sought records of eight of the 1970-73 wiretaps,
I have search my recollection to the best of my ability and can state the following. Certain persons said to be targets of wire interceptions listed as numbers 4 and 8 above were known to me during the period in which the illegal taps were operative. I spoke with them during this period and spoke with them by telephone. Because of the lapse of time, I cannot now recollect the telephone numbers that were involved, and accordingly I am unable in good conscience to aver with certainty that I spoke to the individuals in question over the illegally tapped telephone numbers. On the basis of my memory, however, I have set forth above, I believe that possibility is a substantial one.27
Appellant Rosa L. Sumpter filed an almost identical affidavit, differing essentially only in its allegation that she might have spoken over wiretapped lines 1, 2, 3, 5, 6 and 7 — those which Lincoln had not mentioned.
In light of the Government’s positive denial, appellants failed to carry their threshold burden of demonstrating that any of their conversations were intercepted,
When the Government responds in the affirmative, the accused, as we have seen, may demand records only of monitoring of his own conversations, implicating his own premises or aimed at him.
Appellants have pointed to no case wherein, despite a Government denial that electronic eavesdropping has affected an accused’s protected interests, a court has ordered that records thereof be turned over to the accused to facilitate his proof of standing. On the contrary, it is well settled that an accused has “no right to rummage in government files,”
We leave open now, as we have done before, the question whether “under some circumstances [an individual] should be permitted to traverse the government’s [denial], or whether [an individual] should be able to shift the burden of going forward back to the government by making some showing to contradict the government’s assertions . . . .”
Ill
Appellants further maintain that the applications for the Seventh Street and Land-over wire interceptions failed to set forth adequately information called for by 18 U.S.C. § 2518(l)(c), which specifies that each such request include
a full and complete statement as to whether or not other investigative procedures have been tried and failed or why they reasonably appear to be unlikely to succeed if tried or to be too dangerous.49
That section also imposes a corresponding duty on the authorizing judge to find, as a condition to granting an application, that “normal investigative procedures have been tried and have failed or reasonably appear to be unlikely to succeed if tried or too dangerous” before permitting any electronic surveillance.
The purpose of these critical requirements is to insure that “wiretapping is not resorted to in situations where traditional investigative techniques would suffice to expose the crime,”
Measured in this manner, the applications for the electronic interceptions at Seventh Street and Landover clearly comply with the statute. The Seventh Street application and its accompanying affidavit describe the five-year investigation preceding the request.
[d]ue to the considerable length of time covered by this investigation using all possible normal investigative techniques, and through the experience of affiant and other Special Agents of the Federal Bureau of Investigation familiar with the investigation of numbers gambling operations, it is reasonably concluded [that] the continued use of normal investigative techniques would not bring this matter to a successful conclusion.65
The Landover application, which was made after completion of the Seventh Street interceptions, incorporates the earlier affidavit and similarly details reasons for the Government’s belief that the target telephones were being used in a gambling operation.
Appellants argue that the summary and prayer portions of the affidavits contain mere boilerplate assertions, in derogation of the statutory command. To be sure, these sections of the affidavits are framed in conclusory terminology, but they cannot rationally be separated from the preceding detailed descriptions of the investigative events. Applications are not to be read in a piecemeal fashion,
IV
Having found that appellants failed to establish their standing to challenge any taint in the Seventh Street and Landover intercepts stemming from the prior unlawful wiretaps, and that the Seventh Street and Landover applications complied with governing law, appellants’ convictions are hereby
Affirmed.
. In thirteen count's appellants Rosa L. Sumpter, Lussia Rein and George Williams, Jr., together with five other persons, were charged under 18 U.S.C. § 1955 (1970) with conducting an illegal gambling business, under D.C.Code § 22-1501 (1973) with operating a lottery, under D.C.Code § 22-1502 (1973) with possession of numbers slips, and under D.C.Code § 22-1505 (1973) with maintaining gambling premises. Appellant Sumpter was also charged under 18 U.S.C. § 1952 (1970) with use of a telephone in interstate commerce in aid of unlawful activity. A separate three-count indictment similarly charged appellants James A. Lincoln, Mary L. Lincoln, Michele E. Lincoln, Albert Lincoln, Norris DuBose and Thelma DuBose with violations of §§ 1955 and 22-1501 and James and Albert Lincoln with a violation of § 1952.
. See Omnibus Crime Control and Safe Streets Act of 1969, Pub.L.No.90-351, tit. Ill, § 802, 82 Stat. 216, 18 U.S.C. § 2515 (1970). Hereinafter, citations will be to the Act as codified.
. Appellants’ Appendix (App.) 128.
. App. 82-112.
. App. 82-93.
.App. 113. “A pen register is a mechanical device that records the numbers dialed on a telephone by monitoring the electrical impulses caused when the dial on the telephone is released. It does not overhear oral communications and does not indicate whether calls are actually completed.”' United States v. New York Tel. Co., 434 U.S. 159, 161 n.1, 98 S.Ct. 364, 366 n.1, 54 L.Ed.2d 376, 382 n.1 (1977). The standards governing orders authorizing the installation of pen registers are to be found in the Fourth Amendment and Fed.R.Crim.P. 41. Id. at 168-170, 98 S.Ct. at 370-371, 54 L.Ed.2d at 387-388.
Appellants claim that the District Court erred in finding probable cause for resort to the pen registers. We think the affidavit supporting the application therefor contains adequate validating data. The affidavit, after summarizing material connoting the reliability of numerous confidential informants, App. 12-15, sets forth information from those sources comfortably establishing probable cause to believe that appellant Sumpter was engaging in telephone conversations thereat which furthered a numbers business. App. 16-21. The affidavit also describes surveillance of the Seventh Street house, which disclosed that Sumpter was fre
Pursuant to a subpoena duces tecum, Chesapeake & Potomac Telephone Company supplied the numbers of the two telephones at the Seventh Street address. App. 22. Appellants argue that the affidavit and application do not say that they were the only telephones there. The District Court found that
[w]hen read in a commonsense fashion, the affidavit shows that in response to a subpoena duces tecum, Chesapeake & Potomac Telephone Company provided the numbers of all phones which its records showed at [Seventh Street]. The court, therefore, finds that the affidavit demonstrated probable cause for the authorization of pen registers on the numbers shown in the affidavit.
App. 414. We find no error in this respect.
. App. 50-132; see 18 U.S.C. § 2518(3) (1970).
. App. 133-136.
. App. 145-275.
. App. 422 — 425.
. See note 1 supra.
. App. 409-427. No appeal was taken from the District Court’s decisions on several of the pretrial motions.
. App. 428-430.
. 18 U.S.C. §§ 2510 et seq. (1970 and Supp. V 1975).
. Appellant George Williams, Jr., urges additionally that the District Court stumbled in ruling that the failure to serve him with an inventory notice, as directed by 18 U.S.C. § 2518(8)(d) (1970), did not warrant suppression of the wiretap evidence. After the court had ruled, however, the Supreme Court handed down its decision in United States v. Donovan, 429 U.S. 413, 97 S.Ct. 658, 50 L.Ed.2d 652 (1977), in which it held that nonobservance of this statutory specification, at least when not in bad faith, does not require suppression of intercepted communications. Id. at 435-437 & n.23, 97 S.Ct. at 672-673 & n.23, 50 L.Ed.2d at 672-674 & n.23. Since Williams has nowhere contended that bad faith was an element of the Government’s omission to provide the authorizing judge with his name so that an inventory notice could be sent.,to him, Donovan dictates that the suppression remedy may not be invoked.
. The relevant events are recounted in Brief for Appellants at 9-14. The Government has not disputed the accuracy of that description of the nine wiretaps.
. Specifically, appellants contend that material derived from some of the 1970-73 wiretaps may have been used to develop four of the confidential sources of information instrumental in obtaining judicial leave to install the Seventh Street and Landover wiretaps.
. Alderman v. United States, 394 U.S. 165, 171-174, 89 S.Ct. 961, 965-967, 22 L.Ed.2d 176, 185-187 (1969).
. See id. at 176, 89 S.Ct. at 968, 22 L.Ed.2d at 188 (accused has standing to challenge electronic surveillance “if the United States unlawfully overheard conversations of [accused] himself or conversations occurring on his premises”); United States v. (Frank) Scott, 164 U.S.App.D.C. 125, 128, 504 F.2d 194, 197 (1974), appeal following remand, 170 U.S.App.D.C. 158, 516 F.2d 751 (1975), cert. denied, 425 U.S. 917, 96 S.Ct. 1519, 47 L.Ed.2d 768 (1976); United States v. Bellosi, 163 U.S.App.D.C. 273, 282, 501 F.2d 833, 841-842 (1974); Light v. United States, 529 F.2d 94, 96 (9th Cir. 1976); 18 U.S.C. § 2518(10)(a) (1970) (“aggrieved person . . . may move to suppress the contents of any intercepted wire or oral communication, or evidence derived therefrom”); id. § 2510(11) (“‘aggrieved person’ means a person who was a party to any intercepted wire or oral communication or a person against whom the interception was directed”). See generally Decker & Handler, Electronic Surveillance: Standards, Restrictions and Remedies, 12 Cal. West.L.Rev. 60, 97 (1975) (Congress intended to adopt Fourth Amendment standing requirements).
. Alderman v. United States, supra note 18, 394 U.S. at 172-173, 89 S.Ct. at 965-966, 22 L.Ed.2d at 186, quoting Wong Sun v. United States, 371 U.S. 471, 492, 83 S.Ct. 407, 419, 9 L.Ed.2d 441, 458 (1963) and Jones v. United States, 362 U.S. 257, 261, 80 S.Ct. 725, 731, 4 L.Ed.2d 697, 702-703 (1960); United States v. Magaddino, 496 F.2d 455, 460 (2d Cir. 1974).
. United States v. Plotkin, 550 F.2d 693, 695 (1st Cir.), cert. denied, 434 U.S. 820, 98 S.Ct. 61, 54 L.Ed.2d 76 (1977); United States v. Scasino, 513 F.2d 47, 50-51 (5th Cir. 1975); United States v. Abramson, 553 F.2d 1164, 1170 (8th Cir.), cert. denied, 433 U.S. 911, 97 S.Ct. 2979, 53 L.Ed.2d 1095 (1977); Nolan v. United States, 423 F.2d 1031, 1042 (10th Cir.), cert. denied, 400 U.S. 848, 91 S.Ct. 47, 27 L.Ed.2d 802 (1970). See also United States v. Gibson, 500 F.2d 854, 855 (4th Cir. 1974), cert. denied, 419 U.S. 1106, 95 S.Ct. 777, 42 L.Ed.2d 802 (1975).
As we have stated, each appellant has standing to object to any defect in the Seventh Street and Landover wiretaps on which he or she was concededly overheard. Appellants contend more extensively that any use of information from the unlawful 1970-73 wiretaps in obtaining the Seventh Street and Landover authorizations produced a flaw in the ensuing wiretaps, and that they therefore may complain of infirmities of that sort even if their own voices were not overheard or their own premises were not involved during the earlier illegal eavesdropping. That argument has been rejected by numerous courts. We agree that an accused is unable to attack in this indirect fashion those wiretaps that he could not challenge directly. See, e. g., United States v. Fury, 554 F.2d 522, 525-526 (2d Cir.), cert. denied, 433 U.S. 910, 97 S.Ct. 2978, 53 L.Ed.2d 1095 (1977); United States v. Wright, 524 F.2d 1100, 1102 (2d Cir. 1975); United States v. Scasino, supra, 513 F.2d at 51.
.Act of Oct. 15, 1970, Pub.L.No.91-452, tit. VII, § 702(a), 84 Stat. 935, 18 U.S.C. § 3504(a)(1) (1970); see In re Evans, 146 U.S.App. D.C. 310, 313, 318, 452 F.2d 1239, 1242, 1247 (1971), cert. denied, 408 U.S. 930, 92 S.Ct. 2479, 33 L.Ed.2d 342 (1972).
. Alderman v. United States, supra note 18, 394 U.S. at 184, 89 S.Ct. at 972, 22 L.Ed.2d at 193; Taglianetti v. United States, 394 U.S. 316, 317, 89 S.Ct. 1099, 1100-1101, 22 L.Ed.2d 302, 304-305 (1969). Even if no appellant was the target of the surveillance as a whole, appellants maintain that once one of them has established his standing to claim taint from any conversation on his premises or to which he was a party, he is entitled to the tapes or transcripts of all conversations intercepted on that wiretap. Appellants thus contend that they can resist the use of any evidence obtained regardless, for instance, whether it was derived from a conversation of an appellant or from that of an unrelated speaker, Alderman and Taglianetti, however, clearly indicate that an accused is entitled only to the transcripts involving conversations which he has standing to attack and that he has standing to challenge only evidence obtained through his own conversations or those intercepted on his premises.
. Although appellants insist that the Landover and Seventh Street wiretaps were tainted by intelligence gained through the nine 1970-73 wiretaps, they sought tapes and transcripts only from eight, omitting a wiretap on the telephone of one of appellants, Albert Lincoln, presumably because information concerning it had already been made available to at least one appellant at the time that wiretap was declared unlawful.
. App. 428-429.
. The other appellants sought to rely solely upon the general nature of the 1970-73 wiretaps: “Each involved the FBI or local gambling investigators and each occurred in Washington, D.C. or its close environs.” Brief for Appellants at 38.
. App. 285. He also stated, “I am aware that by firmly claiming to have spoken over the illegally tapped telephones, I can obtain access to their contents, which may materially benefit our contention that the current taps are unlawful. I understand the importance of such a claim, but in honesty can make it only as qualified above.” App. 285-286.
. App. 287-290.
. App. 294-295; Transcript of June 19, 1975 Hearing (Tr.) 116; Brief for Appellee at 59.
. App. 295; Tr. 116; Brief for Appellee at 59.
. See In re Evans, supra note 22, 452 F.2d at 1247; United States v. Covello, 410 F.2d 536, 550 (2d Cir.), cert. denied, 396 U.S. 879, 90. S.Ct. 150, 24 L.Ed.2d 136 (1969); United States v. D’Andrea, 495 F.2d 1170, 1173 (3d Cir.), cert. denied, 419 U.S. 855, 95 S.Ct. 101, 42 L.Ed.2d 88 (1974); United States v. Van Drunen, 501 F.2d 1393, 1395 (7th Cir.), cert. denied, 419 U.S. 1091, 95 S.Ct. 684, 42 L.Ed.2d 88 (1974).
. See text supra at note 19.
. See text at notes 19-20 supra. United States v. Magaddino, supra note 20, cited by appellants, is inapposite. There the Second Circuit divided wiretap challengers into three groups for purposes of determining their standing. The first group included those whose conversations the Government conceded it had overheard. 496 F.2d at 460. The second group consisted of those whose voices had been illegally intercepted by state officials. Id. The court held that both of these groups had standing. Those in the third group, however, had not shown that telephone conversations of their own had been intercepted, and the court held that they had failed to establish standing. At no time did it indicate that they were entitled to records of any conversations to aid their proof thereof.
. Brief for Appellants at 45.
. Taglianetti v. United States, supra note 23, 394 U.S. at 317, 89 S.Ct. at 1100-1101, 22 L.Ed.2d at 304-305.
. Nardone v. United States, 308 U.S. 338, 342, 60 S.Ct. 266, 268, 84 L.Ed. 307, 312 (1939).
. Id.
. In re Evans, supra note 22, 146 U.S.App.D.C. at 318, 452 F.2d at 1247. Appellants argue that an electronic-surveillance denial by the Government not in affidavit form is insufficient to satisfy 18 U.S.C. § 3504 (1970). That provision, however, does not itself require an affidavit, although one is normally desirable. See Note, Claiming Illegal Electronic Surveillance: An Examination of 18 U.S.C. § 3504(a)(1), 11 Harv. C.R.C.L.L.Rev. 632, 660 (1976). Only the Seventh Circuit has refused to accept letter-denials from the Assistant Attorney General in charge of the Justice Department’s Criminal Division. See United States v. Van Drunen, supra note 31, 501 F.2d at 1399; Korman v. United States, 486 F.2d 926, 931 (7th Cir. 1973). We are not constrained, absent further enlightenment from Congress, to depart from the position taken by other circuits that have accepted letter-denials. See, e.g., United States v. Aloi, 511 F.2d 585, 602 (2d Cir.), cert. denied, 423 U.S. 1015, 96 S.Ct. 447, 46 L.Ed.2d 386 (1975); United States v. D’Andrea, supra note 31, 495 F.2d at 1174 n.12; United States v. Stevens, 510 F.2d 1101, 1104-1106 (5th Cir. 1975).
During the hearing, appellant Sumpter testified to several occurrences that in her mind pointed to an illegal wiretap on her telephone by an FBI agent at some earlier time. Tr.
. Supra note 18.
. 394 U.S. at 184, 89 S.Ct. 972, 22 L.Ed.2d at 193.
. Id. at 182, 89 S.Ct. at 971, 22 L.Ed.2d at 192: An apparently innocent phrase, a chance remark, a reference to what appears to be a neutral person or event, the identity of a caller or the individual on the other end of a telephone, or even the manner of speaking or using words may have special significance to one who knows the more intimate facts of an accused’s life. And yet that information may be wholly colorless and devoid of meaning to one less acquainted with all relevant circumstances.
. Id. at 184, 89 S.Ct. at 972, 22 L.Ed.2d at 193.
. Id. at 184-185, 89 S.Ct. at 972-973, 22 L.Ed.2d at 193.
. See text at note 33 supra.
. In re Evans, supra note 22, 146 U.S.App.D.C. at 318, 452 F.2d at 1247. We similarly leave open the question of in camera inspection where a substantial showing undercutting the Government’s denial has been made.
. See text at notes 27-28 supra. See also note 26 supra. At the close of oral argument before this court, counsel for appellants suggested for the first time that appellants needed access to the contents of the intercepted conversations to find out whether unidentified voices thereon
. See text at notes 39-44 supra.
. Even assuming arguendo that all appellants have standing to challenge the wiretap of appellant Albert Lincoln’s telephone — the transcripts of which were already in their possession, see note 24 supra — they have not pointed to any taint from that wiretap. Unlike the records of the eight wiretaps to which the District Court denied them access, appellants could have used the Albert Lincoln transcripts to trace any possible taint to the Seventh Street and Landover wiretaps. Instead, aside from the general assertion that some information sources may have been developed through the use of the prior illegal wiretaps, appellants have based no argument specifically on the transcripts in their possession. No one would deny that “the trial judge must give opportunity, however closely confined, to the accused to prove that a substantial portion of the case against him was a fruit of the poisonous tree.” Nardone v. United States, supra note 36, 308 U.S. at 341, 60 S.Ct. at 268, 84 L.Ed. at 312. But where, as here, parties come forward with no showing whatsoever that the Government has used intelligence derived from the earlier illegal wiretap, and where the FBI agent in charge of the investigation declares under oath that, to his knowledge, the FBI never had any contact with that wiretap, App. 379-381, all the opportunity that Nardone and Alderman provide has been afforded. See also United States v. Sapere, 531 F.2d 63, 66-67 (2d Cir. 1976).
. 18 U.S.C. § 2518(l)(c) (1970).
. 18 U.S.C. § 2518(3)(c) (1970).
. United States v. Kahn, 415 U.S. 143, 153 n.12, 94 S.Ct. 977, 983 n.12, 39 L.Ed.2d 225, 236 n.12 (1974).
. United States v. Giordano, 416 U.S. 505, 515, 94 S.Ct. 1820, 1826-1827, 40 L.Ed.2d 341, 373 (1974).
. Note, Electronic Surveillance, Title III, and the Requirement of Necessity, 2 Hast.Const. L.Q. 571, 617 (1975).
. United States v. (Leon) James, 161 U.S.App.D.C. 88, 95-97, 494 F.2d 1007, 1014-1016, cert. denied, 419 U.S. 1020, 95 S.Ct. 495, 42 L.Ed.2d 294 (1974); United States v. Scibelli, 549 F.2d 222, 227 (1st Cir. 1976), cert. denied, 431 U.S. 960, 97 S.Ct. 2687, 53 L.Ed.2d 278 (1977); United States v. DiMuro, 540 F.2d 503, 510-511 (1st Cir. 1976), cert. denied, 429 U.S. 1038, 97 S.Ct. 733, 50 L.Ed.2d 749 (1977); United States v. Vento, 533 F.2d 838, 849-850 (3d Cir. 1976); United States v. Pacheco, 489 F.2d 554, 565 (5th Cir. 1974), cert. denied, 421 U.S. 909, 95 S.Ct. 1558, 43 L.Ed.2d 774 (1975); United States v. Kalustian, 529 F.2d 585, 589-590 (9th Cir. 1975). Compare United States v. Anderson, 542 F.2d 428, 431 (7th Cir. 1976).
. United States v. Scibelli, supra note 54, 549 F.2d at 227-228; United States v. DiMuro, supra note 54, 540 F.2d at 510-511; United States v. Vento, supra note 54, 533 F.2d at 849-850; United States v. Feldman, 535 F.2d 1175, 1178-1179 (9th Cir.), cert. denied, 429 U.S. 940, 97 S.Ct. 354, 50 L.Ed.2d 309 (1976); United States v. Kalustian, supra note 54, 529 F.2d at 589-590.
. United States v. Robertson, 504 F.2d 289, 293 (5th Cir. 1974), cert. denied, 421 U.S. 913, 95 S.Ct. 1568, 43 L.Ed.2d 778 (1975); accord, United States v. Vento, supra note 54, 533 F.2d at 849; United States v. Pacheco, supra note 54, 489 F.2d at 565; United States v. Kerrigan, 514 F.2d 35, 38 (9th Cir.), cert. denied, 423 U.S. 924, 96 S.Ct. 266, 46 L.Ed.2d 249 (1975).
. United States v. Vento, supra note 54, 533 F.2d at 849; accord, United States v. James, supra note 54, 161 U.S.App.D.C. at 98-99, 494 F.2d at 1015-1016; United States v. Pacheco, supra note 54, 489 F.2d at 565.
. S.Rep.No.1097, 90th Cong., 2d Sess. 101 (1968); accord, United States v. James, supra note 54, 161 U.S.App.D.C. at 98-99, 494 F.2d at 1015-1016; United States v. de la Fuente, 548 F.2d 528, 537-538 (5th Cir.), cert. denied, 431 U.S. 932, 97 S.Ct. 2640, 53 L.Ed.2d 249 (1977).
. Note, The United States Courts of Appeals: 1975-1976 Term Criminal Law and Procedure, 65 Geo.L.J. 203, 247 (1976).
. App. 50-132.
. See text at note 4 supra.
. App. 130; see United States v. Agrusa, 541 F.2d 690, 694 (8th Cir. 1976), cert. denied, 429 U.S. 1045, 97 S.Ct. 751, 50 L.Ed.2d 759 (1977). Neither the authorizing court nor the trial court was presented with any reason to disbelieve this representation. It has been suggested that “[f]ederal agents . . . routinely tell the courts that their confidential informants refuse to testify for fear of their lives, but in many cases where the informant is disclosed, he admits he had no such fear.” Schwartz, Taps,
Should we encounter in future cases this or any other abuse of the confidence entrusted to officials making applications under Title III, we will not hesitate to attempt to craft a remedy.
. See note 5 supra and accompanying text.
. App. 130.
. App. 130-131.
. App. 145-270.
. App. 210-235.
. App. 237-239.
. United States v. Feldman, supra note 55, 535 F.2d at 1179; United States v. Robertson, supra note 56, 504 F.2d at 293.
. See United States v. Abramson, supra note 21, 553 F.2d at 1171 (after seven months other techniques had failed to produce evidence sufficient for prosecution); United States v. Spagnulo, 549 F.2d 705, 710-711 (9th Cir. 1977) (affidavit properly included facts from which “a district judge [could] independently determine that ordinary investigative techniques employing a normal amount of resources have failed to make the case within a reasonable period of time”); Note, supra note 53, 2 Hast. Const.L.Q. at 606-616 (discussing normal investigative techniques that must have failed or been too dangerous or ineffective).
. See United States v. Kalustian, supra note 54, 529 F.2d at 1179.
. United States v. Feldman, supra note 55, 535 F.2d at 1178 (emphasis in original). Compare United States v. McCoy, 539 F.2d 1050, 1055-1056 (5th Cir. 1976), cert. denied, 431 U.S. 919, 97 S.Ct. 2185, 53 L.Ed.2d 230 (1977).
. The applications for the wire interceptions stated that violations of 18 U.S.C. § 1955 (1970) were among the crimes to be investigated. That offense requires proof that a gambling business “involves five or more persons who conduct, finance, manage, supervise, direct, or own all or part of such business,” and that it “has been or remains in substantially continuous operation for a period in excess of thirty days or has a gross revenue of $2,000 in any single day.” 18 U.S.C. § 1955(b)(1)(h) & (iii) (1970). When the Government is duly authorized to resort to electronic surveillance in a criminal investigation, it may do so — to the limit of its authority — to ascertain the full extent of the crime. United States v. Vento, supra note 54, 533 F.2d at 850; United States v. Robertson, supra note 56, 504 F.2d at 293; United States v. Pacheco, supra note 54, 489 F.2d at 565; United States v. Armocida, 515 F.2d 29, 38 (3d Cir.), cert. denied, 423 U.S. 858, 96 S.Ct. 111, 46 L.Ed.2d 84 (1975). These considerations combine to make apparent why, despite the five-year investigation, wiretapping was necessary to any effort to ascertain whether appellants were in violation of § 1955.
. . United States v. James, supra note 54, 161 U.S.App.D.C. at 97, 494 F.2d at 1016; see United States v. Sandoval, 550 F.2d 427, 430-431 (9th Cir. 1976).