OPINION OF THE COURT
In this аppeal we are asked to decide whether the district court erred in dismissing, prior to trial, a four count information against appellee Sidney Lee. The four count information was filed as a result of a trip that Lee had taken to New York and Washington, D.C. and for which he sought partial expense reimbursement from the Virgin Islands government. Lee, who at the time of the trip was a Virgin Islands legislator, claimed that the purpose of his trip was for legislative fact-finding. The government, on the other hand, maintained that the primary purpose of Lee’s trip was personal and political, rather than legislative.
Count I of the information charged that Lee knowingly falsified or concealed the personal nature of his trip in connection with his claim to the Virgin Islands legislature for travel expenses in violation of 14 V.I.C. § 843(2). Counts II and III of the information charged Lee with having violated 14 V.I.C. § 791(2) by attempting to pass two falsified restaurant stubs as genuine receipts, and Count IV charged Lee with making false statements under oath with regard to the two restaurant stubs, in violation of 14 V.I.C. § 1541.
On Lee’s motion, the district court dismissed Count I of the information on the ground that Lee’s legislative Speech or Debate privilege precluded any inquiry into the purpose or motivation of Lee’s purportedly legislative trip. That same day, the district court also dismissed Counts II, III, and IV because the government, having expressed to the court its intention to appeal the district court’s dismissal of the related Count I, was not prepared to proceed to trial on the other counts.
*517 After a careful review of the reсord and examination of the relevant case law, we conclude that, as a general matter, legislative fact-finding is entitled to the protection of legislative immunity, but that this immunity does not bar an inquiry into whether a legislator’s activities and conversations were, in fact, legislative in nature. We therefore reverse the district court’s dismissal of Count I. Since the district court may not have dismissed Counts II, III and IV had it not earlier dismissed. Count I, we also reinstate the last three counts.
I.
In February 1982, Sidney Lee, at the time a Virgin Islands legislator, sought and received approval from the President of the Virgin Islands legislature for a legislative fact-finding trip to New York and Washington, D.C. for the four day period of March 30,1982 to April 2,1982. Lee represented to the President that, during this trip, he would discuss such official legislative business as сonsumer affairs, interior matters and issues involving transportation. App. at 60.
Lee left for New York and Washington on April 8, 1982, not March 30th, 1 and returned from his trip thirteen days later on April 20, 1982. On April 28, 1982, Lee submitted a breakdown of his out-of-pocket expenses to the Virgin Islands legislature’s business office for reimbursement. In his request for reimbursement, Lee stated:
Met with officials of “Area Transportation and Consumer Affairs” in New York. Attended hearings of “UMTA”, also visited the Department of Transportation in Washington. The “White House” in reference to Consumer Affairs and Rick Neal at the “White House” in reference to Airport Transportation and Boat between Islands. Senator Lee stayed over at the suggestion of Mr. Neal and discussed Virgin Islands matters at the U.S. Department of Interior with Assistant Secretary Pedro San Juan and Messers Miller, Down and Ms Ne-ville Morales. Went to Interior Hearing on Environment and hearings on UMTA.
App. at 61.
A subsequent investigation 2 into Lee’s trip by law enforcement officers, however, revealed that Lee may not have met with some of the people with whom he claimed, in his reimbursement request, to have met. For example, although Lee stated that he met with officials of the “Area Transportation and Consumer Affairs in New York,” Lee later indicated in his deposition that he did not meet with those officials since they were not available due to the Easter Holiday Weekend and the holiday of Passover. Similarly, Lee claimed that he “attended hearings of [the] UMTA,” but the official calendar for the Senate Banking Committee reveals that there were no Urban Mass Transit Act hearings during the time of Lee’s trip to Wаshington. App. at 63.
In addition, the investigation indicated that Lee may have failed to report the personal nature of much of his trip. 3 The government contends that Lee’s meetings with Rick Neal at the White House and with Messrs. Miller and Down, and Ms. Morales, did not involve legislative fact-finding, but rather centered around environmental problems that Lee was experiencing in his personal efforts to develop a 230-acre parcel of land in St. Croix known as Sandy Point.
*518 Lee’s personal business difficulties were also allegedly discussed at great length at Lee’s meetings with the Department of Interior’s Office of Territorial and International Affairs. Finally, Lee’s claim for reimbursement did not mention the fact that he attended a three day meeting of the “Presidential Eagles”, a group of major сontributors to the Republican National Committee. The government maintains that Lee’s attendance at the “Presidential Eagles” meeting was not a legislative activity, but was of a purely political nature.
On March 31, 1983, the United States Attorney for the Virgin Islands filed a four count criminal information against Lee. The First Count charged that Lee had knowingly falsified or concealed “the personal political and the personal business nature” of what had been “claimed [as an] official business trip,” in violation of 14 V.I.C. § 843(2). 4 App. at 3. In essence, the First Count alleged that the purpose of Lee’s trip was largely personal in nature, and that Lee had concealed this material fact when he submitted his claim for reimbursement. The three remaining counts did not relate to the purpose of the trip, but to Lee’s specific requests for reimbursement. Counts II and III charged Lee with submitting two falsified receipts for reimbursement (stubs from two restaurant checks) in connection with his trip in violation of 14 V.I.C. § 791(2) 5 . Count IV alleged that Lee perjured himself, in violation of 14 V.I.C. § 1541 6 , when he testified at deposition about the two restaurant stubs.
Lee moved to dismiss Count I “on the grounds that the proof required to substantiate the charge, and to defend against it, contravenefd] [his] legislative privilege under 48 U.S.C. § 1572(d).” App. at 18. Lee also moved to dismiss Counts II and III because the falsified documents were not “receipts” within the meaning of 14 V.I.C. § 791(2) and to dismiss Count IV because his testimony was not “given on an occasion when an oath may be lawfully administered.” App. at 22. Finally, Lee argued that all the counts should be dismissed for failure to proceed by grand jury indictment.
On May 31, 1983, after a pre-trial hearing, the district court granted Lee’s motion to dismiss Count I based on Lee’s legislative privilege. The district court held that where a legislator’s actions “appear” to be official in nature, legislative immunity prohibits further inquiry into whether those actions were, in fact, official in nature. App. at 47. The district court rejected Lee’s alternate arguments and denied Lee’s motion to dismiss Counts II, III, and IV. These counts were severed from Count I.
The government, arguing that the district court’s ruling on Count I had a “significant negative impact” on the remaining counts, moved immediately for a continuance or a dismissal without prejudice with regard to Counts II, III and IV, pending *519 the resolution of the government’s appeal on Count I. App. at 50-51. The district court denied the government’s motion. When thе government refused to proceed to trial with respect to the remaining counts, the district court then dismissed Counts II, III and IV because of the government’s perceived unnecessary delay in bringing those charges to trial. See Fed.R.Crim.P. 48(b).
On June 17, 1983, the government moved for reconsideration of the district court’s May 31, 1983, dismissal. On February 28, 1984, the district court denied the government’s motion for reconsideration, and on March 28, 1984, the government appealed pursuant to 18 U.S.C. § 3731 from the district court’s May 31, 1983 order dismissing the four count information.
II.
As a preliminary matter, we must determine whether this Court has jurisdiction to consider the government’s appeal. Under 18 U.S.C. § 3731, the government has thirty days in which to appeal from a district court’s dismissal of an information. In the present case, the government filed an appeal on March 28, 1984, well ovеr thirty days from the district court’s May 31,1983, order. However, on June 17, 1983, seventeen days after the district court’s dismissal of the information, the government moved for reconsideration. The question, therefore, is what effect the government’s motion for reconsideration had on the timeliness of its subsequent appeal.
While there exists no rule of criminal procedure expressly authorizing a district court in a criminal case to entertain a motion for reconsideration, the Supreme Court has held that such a right exists based on “traditional and virtually unquestioned practice.”
United States v. Dieter,
In the instant case, the government moved for reconsideration within thirty days of the district court’s dismissal, and filed an appeal within thirty days of the district court’s denial of its motion for reconsideration. Accordingly, under Dieter, we have jurisdiction.
III.
The merits of the instant appeal present us with two distinct, but related, issues. The first is whether legislative fact-finding is a protected legislative act entitled to immunity. The second is whether such immunity bars inquiry into activities which are purportedly legislative in character.
Legislators in the Virgin Islands, like their counterparts in the national and many state legislatures, enjoy immunity for actions taken in the regular course of the legislative process. The Revised Organic Act of the Virgin Islands provides, in relevant part, that “No member of the [Virgin Islands] legislature shall be held to answer before any tribunal other than the legislature for any speech or debate in the legislature....” 48 U.S.C. § 1572(d).
Although this Court has not, as yet, precisely outlined the parameters of protection afforded by the Virgin Islands’ legislative immunity provision, we recognize that the above quoted provision is worded similarly to the Speech or Debate Clause of the United States Constitution, which is the legislative immunity provision for our national representatives.
See
U.S. Const. art.
*520
1, § 6.
7
Indeed, the policies underlying the Speech or Debate Clause and the Virgin Islands’ legislative immunity рrovisions are the same. Both were designed to protect the integrity of the legislative process by insuring the independence of individual legislators. As the Supreme Court stated in
Gravel v. United States,
A.
The first question to be addressed is whether legislative fact-finding — the activity in which Lee maintains he engaged during his trip to New York and Washington— is the type of activity that is protected by legislative immunity. In
United States v. Brewster,
Members of the Congress engage in many activities other than the purely legislative activities protected by the Speech or Debate Clause. These include a wide range of legitimate “errands” performed for constituents, the making of appointments with Government agencies, assistance in securing Government contracts, preparing so-called “news letters” to constituents, news releases, and speeches delivered outside the Congress.
Id.
at 512,
Rather, legislative immunity protects “only acts generally done in the course of the process of
enacting legislation....” Id.
at 514,
With respect to whether legislative fact-finding is entitled to such protected status,
*521
the Supreme Court’s opinion in
Eastland v. United States Servicemen’s Fund,
The power to investigate and to do so through compulsory process plainly falls within [the sphere of legitimate legislative activity]. This Court has often noted that the power to investigate is inherent in the power to make laws because “[a] legislative body cannot legislate wisely or effectively in the absence of information respecting the conditions which the legislation is intended to affect or change.” ... To conclude that the power of inquiry is other than an integral part of the legislative process would be a miserly reading of the Speech or Debate Clause in derogation of the “integrity of the legislative process.”
Id.
at 504-05,
Appellate courts which have addressed this issue have held that investigative activities by lawmakers are protected by legislative immunity. In
McSurely v. McClellan,
We have no doubt that information gathering, whether by issuance of subpoenas or field work by a Senator or his staff, is essential to informed deliberation over proposed legislation. The [Supreme Court’s] recent decision [in Eastland] holds that “the power to investigate and to do so through compulsory process plainly falls within” the test for legislative activity announced in Gravel. We think this principle must also extend to field investigations by a Senator or his staff. “A Congressman cannot subpoena material unless he has enough threshold information to know where, to whom, or for what documents he should direct a subpoena. The acquisition of knowledge through informal sources is a necessary concomitant of legislative conduct and thus should be within the ambit of the privilege so that congressmen are able to discharge their constitutional duties properly.”
Id.
at 1286-87 (citations omitted). Similarly, in
Miller v. Transamerican Press, Inc.,
We agree that fact-finding, information gathering, and investigative activities are essential prerequisites to the drafting of bills and the enlightened debate over proposed legislation. As such, fact-finding occupies a position of sufficient importance in the legislative process to justify the protection afforded by legislative immunity. Lеgislators must feel uninhibited in their pursuit of information, for “[a] legislative body cannot legislate wisely or effectively in the absence of information respecting the conditions which the legislation is intended to affect or change____”
McGrain
*522
v. Daugherty,
B.
Since we have determined that, as a general matter, legislative fact-finding falls within the protected legislative sphere, the second question we must decide in the instant case is whether Lee’s activities constituted legislative fact-finding so as to trigger the protection of legislative immunity. Although the district court concluded that Lee’s conversations and meetings in New York and Washington were entitled to immunity, it did so without making any specific factual findings concerning the legislative nature of these activities. Rather, the district court held that since Lee’s travеl and meetings were “ ‘apparently being performed’ as part of the ‘legislative function’ ”, the government could not inquire into whether Lee’s “actions were or were not ‘legislative in fact.’ ” App. at 47. In essence, the district court held that the legislative privilege protects not only legislative acts, but also acts which are purportedly or apparently legislative in nature. We disagree.
It is undisputed that legislative immunity precludes inquiry into the motives or purposes of a legislative act.
United States v. Johnson,
In the instant case, Lee argues that his “conversations” and “meetings” in New York and Washington with various officials were likewise protected by legislative privilege. However, Lee’s private conversations do not, in and of themselves, trigger the legislative privilege because they are not manifestly legislative acts. Private conversations — even between officials of governments — do not necessarily involve official business. It is the content of Lee’s private conversations, and not the mere fact that thе conversations took place, that determines whether Lee is entitled to legislative immunity. In order for Lee’s conversations to trigger the protection of legislative immunity, they must have involved legislative fact-finding. Although Lee maintains that his meetings and conversations were official in nature, and did involve information gathering, such assertions cannot preclude a court of competent jurisdiction from determining whether Lee’s conversations were, in fact, legislative in nature so as to trigger the immunity. As the Court in
Eastland, supra,
emphasized, legislative immunity is an absolute bar to interference, “once it is determined that members are acting within the ‘legitimate legislative sphere’ ”,
The Supreme Court’s decision in
United States v. Helstoski,
Nothing in our opinion, by any conceivable reading, prohibits excising references to legislative acts, so that the remainder of the evidence would be admissible. This is a familiar process in the admission of documentary evidence. Of course, a Member can use the Speech or Debate Clause as a shield against prosecution by the Executive Branch, but only for utterances within the scope of legislative acts as defined in our holdings.
Id.
at 488 n. 7,
Significantly, these same principles found expression in this Court’s opinion in
In re Grand Jury
(Intervenor A),
This Court rejected both arguments. We held, as an initial matter, that “[ojnly the use against the Congressman of those portions which record such legislative acts offends the Speech or Debate Clause”. Id. at 596. We went on to hold that the records must be given over to the United States Attorney so that the Attorney could separate the legislative calls from the personal calls. Thus, in Grand Jury, we sanctioned a preliminary inquiry into the nature of a purportedly legislative act to determine whether the act was, in fact, protected by legislative immunity. In so holding, we also recognized that “[ujnlike privileges such as attorney-client, physician-patient, or priest-penitent, the purpose of which is to prеvent disclosures which would tend to inhibit the development of socially desirable confidential relationships, the Speech or Debate privilege is at its core a use privilege.” Id. at 596 (citations omitted) (emphasis added).
The district court, in ruling for Lee, neither cited nor referred to these authorities. Rather, relying for its ruling entirely on
United States v. Dowdy,
While the language appears to have broad implications, we read it narrowly in light of the particular facts involved in
Dowdy.
Dowdy, а Chairman of the House Subcommittee on Investigations for the Committee on the District of Columbia, was charged with orchestrating a sham investigation. The investigation itself, however, was clearly within the scope of his authority as subcommittee chairman. The government sought to show that Dowdy’s motives for conducting the investigation were illicit. Such an inquiry, however, into the motivation for an admittedly legislative act, is precisely what the Speech or Debate Clause forbids.
See United States v. Brewster,
Our narrow reading of Dowdy is supported by the decision in Helstoski, East-land, and Grand Jury, all of which would conflict with the expansive interpretation of Dowdy pressed by Senator Lee. Therefore, to the extent that the Dowdy decision would bar inquiry into purportedly legislative acts for the purpose of determining whether the acts are, in fact, legislative, we decline to follow it.
Accordingly, on remand, it will be the task of the district court at the outset to determine which acts were proper legislative acts and which were personal and non-legislative acts.. We are, of course, at a disadvantage at this stage of the proceedings in prescribing precise instructions for the district court, since we do not know, any more than the district court knows, the exact nature of the proofs which will be offered by the government. Nor do we know whether, or how, any of such proofs will be rebutted by Lee. Despite our lack of knowledge of the manner in which the government intends to prove its charges, we can anticipate that in some instances there will be a dispute as to whether particular events, conferences, disbursements, or conversations came within the ambit of legislative fact-finding or were personal or non-legislative in character.
It will initially be for the district court, outside the presence of the jury (either during or prior to trial), to make that determination. Since Senator Lee is asserting a legislative privilege, the burden of establishing the applicability of legislative immunity, by a preponderance of the evidence, rests with him.
In re Grand Jury, supra,
The crime charged in Count I, misrepresentation of a material fact, derives directly from Senator Lee’s submission of a request for reimbursement. Clearly the request in itself is not legislative. In order to determine whether there was a misrepresentation, however, the court must necessarily inquire into the nature of Senator Lee’s activities during the trip. Any activities that are legitimate legislative acts are entitled to speech or debate immunity. Therefore, Senator Lee may seek to establish outside the presence of the jury, by a preponderance of evidence, that particular meetings and events, or even the trip as a whole, were legitimate legislative acts. 11
*525 If the court determines that a particular meeting or event constitutes a legislative act, i.e., that it contained a significant legislative component, then legislative immunity-attaches and that particular activity is not admissible in the prosecution, see United States v. Helstoski, supra, unless Lee himself seeks to introduce it. If, after consideration of the legislative and non-legislative acts performed, Senator Lee has established by a preponderance of the evidence that the legislative component of the trip was significant and bona fide and that the trip would not have been taken but for the legislative act involved, and that the trip was not improperly extended in order to obtain reimbursement for non-legislative acts, then the court would be obliged to dismiss the indictment. 12 Since it is not a criminal offense to discuss some personal matters during a lеgislative fact-finding meeting, or to attend to some personal business during the free time on an otherwise legitimate legislative fact-finding trip, a meeting or trip may be deemed immune even though some personal exchanges transpired.
If Senator Lee fails to establish that the trip as a whole is entitled to legislative immunity, the trial will proceed. The district court will then be required to rule on the materiality element of 14 V.I.C. § 843(2). 13 See supra n. 4. It will be for the district court to determine as a matter of law whether the alleged concealment or falsification of Lee’s non-legislative personal activities was “material” as it impacted upon Lee’s request for reimbursement. 14 If the district court concludes that the evidence of non-legislative acts is “material”, then, under appropriatе instruction, it will submit the issue to the jury.
The jury then would have to make the conventional determinations on the issue of misrepresentation, including that of the defendant’s intent. The defendant may introduce evidence of particular legislative acts to counter the government’s evidénce, but the government may not inquire into the motives for those particular acts that the court has determined to be legitimately legislative.
United States v. Brewster,
This procedure balances the legislative interest in protection from prosecution for legislative acts and the executive interest in punishing fraudulent reimbursement claims. If Senator Lee can establish to the court that his trip was legislative, i.e., that the legislative component of the trip was significant and bona fide and that the trip would not have been taken but for the legislative act involved, he is immune. If the prosecution can prove beyond a reasonable doubt that even after discounting his reimbursement request by 25%, Senator Lee misrepresented the nature of the trip in seeking reimbursement for the other *526 75%, it will be for the jury to determine his guilt. Thus, under this procedure all those events, meetings, or trips that are legitimate legislative acts will enjoy immunity, but the cloak of immunity will not serve as a shield for non-legislative acts. 15
Thus, in this case, our disposi-tive holding is not expansive: we simply hold that it is proper to look into a purported legislative act of fact-finding in order to determine if it is, indeed, a legislative act which is privileged, or whether it is an act which falls outside any legislative immunity. The district court, by refusing to allow that critical inquiry, erred. Hence, the district court’s dismissal of Count I will be reversed.
IV.
After the district court dismissed Count I, it also dismissed, pursuant to Fed.R.Crim.P. 48(b) 16 , Counts II, III, and IV. These counts were then severed. The district court judge ordered the government to go forward and try Counts II, III and IV despite the government’s expressed intention to appeal the dismissal of Count I. The counts to be tried involved two alleged forged restaurant stubs and perjury related to the forgeries. The district court explained that the government could prove these counts with evidence independent from that which would be introduced in a trial on Count I.
The government, however, declined to go forward and sought a stay pending appeal, or, in the alternative, a dismissal without prejudice. The district court denied this application. 17 Prior to this refusal, the prosecution had ignоred schedules set by the courtf°r discovery, production of Bra- ^ material, and in camera review of the government s interview notes. The court expressly warned the prosecution that if it continued to delay, he would dismiss the case. App. at 294, 298.
A Rule 48(b) dismissal may be reversed only upon a showing that the district court abused its discretion.
United States v. Aberson,
*527 V.
The district court’s orders of May 31, 1983 will be reversed and the case remanded to the district court for further proceedings consistent with the foregoing opinion.
Notes
. In his reimbursement request, Lee explained that his trip was postponed "due to airport [sic] closing and change [sic] in appointments as a result of very bad weather." App. at 61.
. The investigation included the voluntary deposition of Lee on September 1, 1982, at the offices of the United States Attorney. At this deposition, Lee was under oath and was informed by the Assistant United States Attorney that he was subject to the penalties of perjury if he lied.
. Lee represented in the cost breakdown for his trip that he spent 25% of his time on personal matters. Accordingly, Leе only sought reimbursement for 75% of his out-of-pocket expenses. Lee’s expenses, which totaled $1,751.53, were comprised of airfare, airport transfers, five days’ lodging, and seven meals. See Appendix II of Appellee’s Brief.
. 14 V.I.C. § 843(2) provides that whoever “knowingly and willfully falsifies, conceals, or covers up by any trick, scheme, or device a material fact: in any matter within the jurisdiction of any officer, department, board, commission, or other agency of the government of the Virgin Islands, shall be fined not more than $500 or imprisoned not more than two years, or both.”
. 14 V.I.C. § 791(2) provides that whoever, "with intent to defraud another, utters, publishes, passes, or attempts to pass, as true and genuine, any of the false, altered, forged or counterfeited matters, as above specified and described, knowing the same to be false, altered, forged or counterfeited; shall be fined not more than $2,000 or imprisoned not more than 10 years, or both.”
. 14 V.I.C. § 1541 provides that:
Whoever, in or in connection with, any action, proceeding, hearing or inquiry or on any occasion when an oath may be lawfully administered—
(1) swears or affirms—
(A) that he will truly testify, declare, depose or certify: or
(B) that any testimony, declaration, deposition, certificate, affidavit or other writing subscribed by him is true: and
(2) willfully and knowingly testifies, declares, deposes or certifies falsely or states in his testimony, deposition, affidavit or certificate any matter to be true which he knows to be false — shall be imprisoned not more than 10 years.
. The speech or Debate Clause of the Constitution of the United States provides that "for any Speech or Debate in either House, they [Members of Congress] shall not be questioned in any other place." U.S. Const, art. 1, § 6.
Of course, there are noteworthy contrasts in the wording of the Speech or Debate Clause and its Virgin Islands counterpart. Our constitutional provision states that Members of Congress shall not be "questioned", while the Virgin Islands statute states that legislators shall not be "held to answer”. We do not decide to what extent this difference in language renders the Virgin Islands privilege solely one of noneviden-tiary use, rather than a privilege that is also testimonial in nature.
See, e.g., United States v. Helstoski,
In this regard, we note that Lee's claim that he was impermissibly deposed by the Assistant United States Attorney is unpersuasive in light of the fact that Lee’s testimony was completely voluntary. Thus, with respect to his deposition, it appears that Lee waived any testimоnial privilege he might have had under the immunity provision.
. Neither Lee nor the government sought to distinguish, either by its terms or purposes, the Organic Act’s immunity provision from the immunity provision of the United States Constitution. Moreover, both have relied on authorities interpreting the Speech or Debate Clause of the United States Constitution.
. Despite the court’s language in
Eastland
emphasizing the importance of fact-finding to the legislative process, in
Hutchinson v. Proxmire,
. The government cites only
United States v. Garmatz,
. The suggested procedure outlined in the text is guided by the precise nature of the charges here, which require balancing of legislative and personal activities. If the allegation in this case were that during the trip Senator Lee had offered someone a bribe, e.g., in connection with his land development project, cf. Helstoski, supra, or had done something in itself improper, there could be little question that evidence of the bribe or other impropriety would be admissible no matter how much of the rеst of the trip was devoted to legislative fact-finding. In that situation, guilt could be established without reference to legislative acts. But the allegation *525 here is that, even allowing for Senator Lee's own 25% discount for admittedly personal expenses. Senator Lee misrepresented the purpose of his trip. Any determination of guilt or innocence, then, will require some reference to legislative acts.
. The inquiry into the trip as a whole is a function of the government’s decision to frame its indictment in those terms.
. Our conclusion that the materiality determination in 14 V.I.C. § 843 is a question of law, rather than one of fact, is largely influenced by this Court’s decision in
United States v. Greber,
Materiality, in the misrepresentation context, usually goes only to whether the misrepresentation was of sufficient import to be capable of fraudulently inducing action. Id. at 73 (setting out meaning of misrepresentation in section 1001).
. In connection with the materiality inquiry, the fact that Lee sought reimbursement for only 75% of the expenses incurred, should be taken into account. See supra n. 3.
. Requiring Senator Lee to establish his entitlemеnt to speech or debate immunity does not itself infringe the privilege, which, as we have explained, is only one of non-testimonial use; rather such procedure serves only to determine the applicability of the privilege and so to vindicate it in an appropriate case.
See In re Grand Jury, supra,
. Fed.R.Crim.P. 48(b) provides;
If there is unnecessary delay in presenting the charge to a grand jury or in filing any infer-mation against a defendant who has been held to answer to the district court, or if there is unnecessary delay in bringing a defendant to trial, the court may dismiss the indictment, information or complaint.
. At this point in the trial, approximately 100 prospective jurors had already been called to court,
. Lee presents the alternative arguments that this court should (1) dismiss Counts II and III on the aiternate gr0und that the falsified documents (restaurant stubs) were not receipts within the meaning of 14 V.I.C. § 791(2); (2) dismiss Count IV because Lee's testimony was not g¡ven on an occasion when an oath may be lawfully administered; and (3) dismiss Counts I, alld ^ because the United States Attorne7 falled t0 Proceed by grand jury indictment, On May 31, 1983, the district court considered these arguments and rejected them. We recognize that these alternative arguments are prop
*527
erly before this Court despite Lee’s failure to file a cross-appeal.
See Lucas v. Gulf & Western Industries, Inc.,