Brian McMutuary, Dante Grier and Steven Brown participated in the armed robbery of Southwest Financial Bank in Chicago. A superseding indictment charged each with conspiracy to commit armed bank robbery, armed bank robbery and use of a firearm in connection with a crime of violence. McMutuary also was charged with one count of perjury. Brown entered a plea of guilty on all counts of the original indictment (which contained the same charges with respect to Brown as the superseding indictment) pursuant to a written plea agreement in which he agreed to provide assistance to the government. In considering Brown’s sentence, the district court departed downward because of the substantial assistance provided to the government by Brown and because of his family circumstances and sentenced Brown to a period of one year home confinemеnt followed by a period of probation. After Brown pleaded guilty, a jury convicted McMutuary and Grier on all counts of the superseding indictment. The district court sentenced McMutuary to 195 months in prison and Grier to 138 months in prison.
On appeal, Grier argues that the district court erred by denying his motion to dismiss the indictment for prejudicial pre-indictment delay. McMutuary and Grier assert that the district court erred in refusing to consider a downward departure from their sentencing ranges based on a perceived unjustified disparity between their sentences and the sentence imposed on Brown. We reject Grier’s argument regarding the pre-indictment delay, and although we agree that an unjustified disparity existed between the sentence imposed on Brown and the sentences imposed on McMutuary and Grier, we find no error in the district court’s refusal to consider .this disparity in the computation of McMutuary’s and Grier’s sentences. Accordingly, we affirm the decisions of the district court.
I. HISTORY
On February 18, 1992, Brown entered Southwest Financial Bank, where McMu-tuary worked as a coin and currency teller, *480 and presented a note to the bank’s vault custodian demanding to be shown the location of the bank’s safe deposit boxes. To ensure the bank took his demand seriously, Brown showed the custodian a handgun, which he had placed in the waistband of his pants. The custodian led Brown to the vault where McMutuary was waiting. Brown then pulled the gun from his waistband and instructed the custodian and McMutuary to fill a duffle bag with money. Once the bag was filled with money, Brown told McMutuary to bind the custodian with tape. To make it appear that McMutuary was not involved in the robbery, Brown did the same to McMutuary before exiting the bank.
Events before and after the robbery clearly established that McMutuary, Grier and Brown acted in concert in robbing the bank. On the day befоre the robbery, Grier approached Brown and inquired about his interest in participating in a bank robbery. Grier explained that he and McMutuary intended to rob the bank where McMutuary worked, and McMutu-ary’s participation in the scheme would facilitate the robbery. Grier would simply enter the bank, and McMutuary would fill his bag with money. Based on Grier’s assurances regarding the manner in which the plan would be carried out, Brown agreed to participate in the robbery by acting as the getaway driver.
On the day of the robbery, Brown and Grier parked McMutuary’s car across the street from the bank and waited for McMutuary to contact them. After receiving two pages on his beeper from McMutu-ary, Grier entered the bank. He quickly returned, informing Brown that a security guard deterred him from following through with the plan. A few minutes later, Brown entered the bank and once he was satisfied that the security guard was not at his post, рresented a demand note to the vault custodian. Brown left the bank upon completion of the robbery and placed the money in the trunk of McMutu-ary’s car, and Grier and Brown drove off. Two days later, McMutuary, Brown and Grier met at a nearby hotel and split the money.
During the investigation conducted by the Federal Bureau of Investigation, local authorities and a federal grand jury, McMutuary and Grier told conflicting stories regarding their involvement in the robbery. Eventually, the two recanted portions of their stories. Based in part on the testimony of McMutuary and Grier and their interviews with authorities, a federal grand jury returned an indictment charging McMutuary and Brown with conspiracy to commit armed bank robbery in violation of 18 U.S.C. § 371, armed bank robbery in violation of 18 U.S.C. § 2113(a) and (d) and use of a firearm in connection with a crime of violence in violation of 18 U.S.C. § 924(c). Additionally, McMutuary was indicted on a single charge of perjury. A superseding indictment was subsequently returned by the grand jury charging McMutuary and Brown with the same crimes and also charging Grier with conspiracy to commit armed robbery, armed robbery and use of a firearm in connection with a crime of violence.
Brown entered a plea of guilty on all counts of the. original indictment pursuant to a written plea agreement in which he agreed to cooperate with the government. McMutuary and Grier proceeded to trial after the district court denied Grier’s motion to dismiss the indictment based on a claim of prejudicial pre-indictment delay. T he jury convicted both McMutuary and Grier on all counts.
A straightforward application of the United States Sentencing Guidelines to Brown’s conviction placed Brown in a sentencing range of 117 to 131 months — 57 to 71 months for the robbery and conspiracy charges, combined with a consecutive 60-month minimum mandatory sentеnce for the violation of § 924(c). In exchange for Brown’s cooperation, the government specified in the plea agreement that at the time of Brown’s sentencing, it would file a motion pursuant to U.S.S.G. § 5K1.1, re *481 questing a downward departure from the applicable Guidelines range and the statutory minimum sentence to a term of imprisonment one-third lower than the combined term required by the Guidelines for the conspiracy and armed robbery charges and the additional term required by his plea of guilty to the § 924(c) charge.
Brown moved for an additional downward departure based on extraordinary family circumstances. At his sentencing hearing, members of Brown’s family testified in support of his claim that he was needed at home to care for his elderly and ill parents and his eleven-year-old niece. Although the government opposed Brown’s motion, the government nevertheless moved for thе downward departure as agreed in Brown’s plea agreement. Upon consideration of the motions made by both Brown and the government, the district court departed downward fourteen offense levels and sentenced Brown to twelve months home detention followed by a period of probation. In imposing that sentence, the court cited both Brown’s cooperation with the government and his family circumstances as grounds for the departure, but did not specifically assign either ground to any aspect of the departure.
Prior to sentencing, McMutuary and Grier moved for downward departures based on a perceived disparity between Brown’s sentence and the sentences called for under their own Guidelines ranges. The district court denied this motion, reasoning that “the only way [the court] could grant your motion ... would be to say that I granted an improper departure [with respect to Brown], and I do not believe that I did.” Although the court rejected McMutuary’s and Grier’s requests for downward departures, the district court sentenced them to the lowest sentences available under the Guidelines for the conspiracy and armed robbery offenses combined with the required consecutive sixty-month sentence for the violation of § 924(c). The district court sentenced Grier to a term of 138 months in prison. Because of an enhancement for his perjury conviction, McMutuary received a term of imprisonment of 195 months. Grier now appeals the denial of the motion to dismiss the indictment based on prejudicial pre-indictment delay, and McMutuary and Grier both appeal the sentences imposed on them by the district court.
II. Analysis
A Pre-indictment Delay
Grier was first named as a defendant in the superseding indictment returned by the grand jury on February 11, 1997 — nearly five years after the robbery. Grier claims that the government’s delay in prosecuting him caused him actual and substantial prejudice by severely hampering his ability to defend himself against the charges contained in the superseding indictment. Grier’s claim of actual and substantial prejudice is predicated upon his assertion that he was unable to present the testimony of a material witness who died during the period of the government’s delay. Furthermore, Grier submits that the prejudice he suffered was not outweighed by the government’s proffered justification for its delay. Accordingly, Grier contends that the district court erred in denying his motion to dismiss the indictment based on pre-indictment delay. We review a district court’s decision to deny a motion to dismiss an indictment for prosecutorial delay for an abuse of discretion.
See United States v. Spears,
A defendant’s primary safeguard against unreasonable prosecutorial delay is derived from the applicable statute of limitations.
See Pardue,
As stated, Grier’s claim of actual and substantial prejudice is related entirely to his inability to call a single witness at trial. Grier contends that the testimony of his aunt, Margaret Blackman, was critical to his defense, but that he was unable to present this testimony because she died prior to the return of Grier’s indictment by the grand jury. According to the affidavit of Blackman’s daughter, Cassandra Black-man, had Margaret Blackman been called to testify at trial, she would have testified that she lived with Grier and that he did not leave their residence on the day of the robbery. Therefore, this testimony would have provided Grier with an alibi defense.
Although the loss of a vital defense witness may satisfy a defendant’s burden to demonstrate prejudice, we do not conclude that Grier suffered actual and substantial prejudice as a result of his inability to call Margaret Blackman as a witness in the present case. In light of other testimony offered at trial on Grier’s behalf, it would be difficult to characterize Margaret Blackman as a “vital defense witness.” Her testimony would have been largely cumulative of the testimony offered by Cassandra Blackman, who testified that she, like Margaret Blackman, lived with Grier and that he was at home during the entire day of the robbery. The testimony of Margaret Blackman would have simply corroborated the alibi defense ultimately offered by Cassandra Blackman. As we have stated, “the absence of cumulative testimony cannot, as a matter of law, result in actual prejudice.”
Spears,
We recognize in passing that even if we were to conclude that Grier suffered actual and substantial prejudice, the government offered a credible explanation for the delayed filing of the indictment that would not be outweighed by the prejudice claimed by Grier. The government informed the district court that the timing of the indictment was designed to permit the pursuit of evidence that would corroborate the information provided to the government by Brown after he implicated his co-defendants. The government explained that it was necessary to obtain and analyze bank records, hotel records, credit histories and employment histories, among other evidence. The timing of the indictment was further necessitated to provide the government with an opportunity to pursue evidence of the defendants’ use of the proceeds of the robbery. Finally, it is also worth noting that there has been no showing that the explanation offered by the government was pretextual. Grier has pointed to no evidence suggesting that the government even knew of Margaret Black-man’s existence or her health condition.
*483
The cause of the delay can only be characterized as investigatory in nature, and in such cases, we will not find a due process violation.
See Sowa,
B. Sentencing Disparities
McMutuary and Grier claim that the district court erred in refusing to consider the disparity between Brown’s sentence and their own sentences as a basis to depart downward from the range imposed by the Guidelines. They contend that the disparity between the sentence imposed on Brown and their own sentences cannot be justified under a proper application of the Guidelines. For this reason, the district court should have considered this unjustified disparity in deciding whether to depart from the applicable Guidelines range in imposing their sentences.
We review decisions regarding departures from the Guidelines for abuse of discretion.
See United States v. Gonzalez-Portillo,
1. Koon and Meza
Because defendants’ arguments are based on an understanding of the Supreme Court’s holding in
Koon,
and our own holding in
United States v. Meza,
However, the Guidelines do not leave the determination of whether a factor merits a departure from the heartland entirely to the discretion of the district court. Instead, the Sentencing Commission has delineated four categories of sentencing factors to determine whether a case is atypical: forbidden, encouraged, discouraged and unmentioned. Among these categories, only “forbidden” factors may never provide a basis for departure from a sentencing range. These factors include race, sex, national origin, creed, religion, socioeconomic status, physical conditions, such as drug or alcohol dependence, and economic hardship. See U.S.S.G. §§ 5H1.10, 5H1.4, 5K2.12. District courts are otherwise free to dеpart if “the court finds that there exists an aggravating or mitigating circumstance of a kind, or to a degree, not adequately taken into consideration by the sentencing commission in formulating the guidelines that should result in a sentence different from that described.” 18 U.S.C. § 3553(b).
*484
In
Koon,
the Supreme Court recognized that a sentencing court must make two inquiries in determining whether a specific factor can be an appropriate basis for departure.
In
Meza,
we considered whether, in light of
Koon,
a district court could rely on a disparity between sentences of co-conspirators in order to justify a departure from a Guidelines range not subject to a statutory minimum.
Although we denied the defendant’s appeal, we declined to hold that a sentencing court should never consider the disparity between sentences of co-defendants as a basis for departure from the applicable Guidelines range because of the prohibition against across-the-board rejection of a factor recognized by the sentencing court in
Koon,
Although unnecessary to the holding of the case, we also considered the applicability of considering an unjustified disparity, which we defined as “one that does not result from a proper application of the Guidelines. In other words, it is a disparity in sentences that cannot be explained by a comparison of each defendant against the Guidelines as a set of rules.”
Meza,
2. Justification for Disparity
McMutuary and Grier contend that the sentencing disparity of which they complain arose from the district court’s decision to sentence their co-conspirator Brown to a twelve-month period of home detention and probation, while they received sentences within the applicable Guidelines range. McMutuary and Grier claim that Brown’s sentence did not result from a proper application of the Guidelines. As such the disparity between the sentences of the co-defendants is unjustified, and they contend that the sentencing court should have considered this unjustified disparity in determining whether to depart from the applicable Guidelines range. We turn first to an examination of Brown’s sentence.
a. Facts
Brown pleaded guilty to the same charges for which McMutuary and Grier were convicted: conspiracy to commit bank robbery in violation of 18 U.S.C. § 371; armed bank robbery in violation of 18 U.S.C. § 2113(a) and (d); and use of a firearm in relation to a crime of violence in violation of 18 U.S.C. § 924(c). The district court concluded that Brown’s plea of guilty to these charges resulted in a total offense level of twenty-four and a criminal history category of II under the Guidelines. This calculation resulted in a sentencing range of fifty-seven to seventy-one months, with an additional consecutive sixty-month sentence imposed on Brown as a result of the violation of § 924(c). 2
As a result of Brown’s cooperation with the government, the government included a paragraph in Brown’s plea agreement providing that at the time of Brown’s sentencing, the government would move the court pursuant to U.S.S.G. § 5K1.1 “to depart from the applicable Guidelines range and the statutory minimum sentence, and to impose a sentence of imprisonment ... of 66% of the low end of the *486 combined sentencing range that results from the aggregation of the five-year mandatory minimum prison term for carrying and using a firearm during and in relation to a crime of violence with the low end of the applicable guideline range for the remaining offenses.” Prior to sentencing, Brown also moved for a downward depаrture based on extraordinary family circumstances, and at his sentencing, he presented testimony of family members in support of his claim that he was needed at home to care for his parents and his eleven year-old niece. The government opposed this motion, but at sentencing moved pursuant to the plea agreement for departure under U.S.S.G. § 5K1.1.
After considering both the government’s and Brown’s motions, the district court departed downward to an offense level of ten and sentenced Brown to a period of twelve months of home detention and probation. In imposing that sentence, the court cited both Brown’s cooperation and his family circumstances, but failed to assign either ground to any particular aspect of its departure. In sentencing Brown, the district court departed below both the applicable Guidelines range and the statutory minimum mandatory five-year sentence required by the count charging Brown with violating § 924(c). While a court may impose a sentence below a defendant’s Guidelines range based on a substantial assistance motion, imposition of a sentence below a statutory minimum (such as the one required by § 924(c)) requires a motion by the government pursuant to 18 U.S.C. § 3553(e).
3
In this case, § 3553(e) provides for only one basis for departure below a statutory minimum mandatory— upon motion by the government for substantial assistance provided by the defendant.
See United States v. DeMaio,
b. Analysis
McMutuary and Grier contend that the district court’s decision to depart below the statutory mandatory minimum sentence resulted from an improper rebanee on Brown’s family circumstances. They assert that the government did not move pursuant to § 3553(e) for a departure below the statutory mandatory minimum required by the § 924(c) count, and, therefore, the district court must have necessarily relied on Brown’s family circumstances. Although the government submits that it moved pursuant to § 3553(e) for a departure below the mandatory minimum, the government concedes that “it seems impossible to say that the district court did not incorrectly base its decision to depart below the five-year minimum, at least in part, on Brown’s family circumstances.” The defendants believe the erroneous nature of Brown’s sentence resulted in a sentencing disparity that cannot be justified by a proper аpplication of the Guidelines. Therefore, they *487 argue that the district court should have considered this disparity when examining their motions for a downward departure.
The government’s contention that it moved pursuant to § 3553(e) for a downward departure below the statutory mandatory minimum with respect to Brown’s sentence is, at the very least, disingenuous. While an explicit reference to § 3553(e) is not necessarily required before a sentencing court may depart below a statutory minimum, “the Government must in some way indicate its desire or consent that the court depart below the statutory minimum before the court may do so.”
Melendez v. United States,
The government bases its argument that it communicated its consent to a departure below the statutory mandatory minimum on certain language in the plea agreement. A paragraph in the plea agreement specified that at the time of Brown’s sentencing the government would request that the district court depart downward pursuant to U.S.S.G. § 5K1.1 “from the applicable sentencing guidelines range and the statutory minimum sentence.”
However, when the language of the plea agreement is juxtaposed with other language in the plea agreement and the government’s oral motion for departure made at the time of Brown’s sentencing, it is clear that the government did not desire or consent to a departure below the statutory mandatory minimum. The terms of the plea agreement stated that the government would request that the district court reduce by one-third the combined sentencing range that resulted from the aggregation of the five year mandatory prison term for the § 924(c) violation with the applicable Guidelines range for the remaining offenses. The request for a one-third departure was reiterated at Brown’s sentencing hearing. Howevеr, no mention was made of a departure below the statutory mandatory minimum. At best, Brown could have received a sentence of seventy-eight months pursuant to the terms of the plea agreement. We recognize that the district court would not have been bound by the government’s request for a one-third reduction.
Nevertheless, our examination of the agreement and the government’s motion at Brown’s sentencing hearing belies any suggestion that the government desired or consented to a departure below the statutory mandatory minimum. It necessarily follows that the district court was without power “to impose a sentence below the statutory minimum to reflect a defendant’s cooperation when the Government has not authorized such a sentence, but has instead moved for a departure only from the applicable Guidelines range.”
Melendez,
It is clear then that the district court erred in departing below the statutory mandatory minimum of five years imprisonment when it imposed a sentence of probation and home confinement upon Brown. Because Brown would not have received this sentence in the absence of the district court’s error, the error contributed, at least in part, to the disparity in the sentences imposed. This disparity is not “the result of a proper application of the Guidelines to the particular circumstances of [this] case.”
Meza,
3. Applicability of Meza
We now are confronted with an issue that was anticipated in
Meza:
whether the district court must consider an unjustified disparity in the sentencing of co-defendants as a factor in determining whether to grant a downward departure. In
Meza,
we noted that in the case of an unjustified disparity, the sentencing court should consider the disparity to determine whether a defendant merits a departure downward “so that the federal courts may provide ‘the even-handedness and neutrality that are the distinguishing marks of any principled system of justice.’ ”
As we noted in
Meza,
the determination of whether to consider a factor as a permissible basis for departure depends on whether the Commission has adequately taken it into consideration in its construction of each Guideline’s heartland.
See Meza,
However, § 1B1.4 may also be construed as a grant of authority to consider the character and conduct of the defendant beyond those acts for which the defendant was convicted, and at least one other court has found that this guideline was not intended as “a limitation on the court’s power to consider other factors if appropriate.”
United States v. Newby,
Despite
Koon,
most other courts have concluded that sentencing disparities between co-defendants should never constitute a permissible basis for departure from the Guidelines’ sentencing range.
See, e.g., United States v. McKnight,
For this reason, rather than curing the problem of nationwide sentencing disparity, consideration of the sentences given to co-defendants “creates a new and entirely unwarranted disparity between the defendant’s sentence and that of all similarly situated defendants throughout the country.”
Joyner,
In
Meza,
we held that justified disparities, which include all disparities which arise from a proper application of the Sentencing Guidelines, should never be considered as permissible bases for departure.
In light of the promulgation of Guidelines with the intent to create uniformity of sentencing nationwide for all similarly situated defendants,- we believe that the Sentencing Commission implicitly considered the potential for disparity of sentences, whether justified or unjustified, between co-defendants in its creation of an applicable sentencing range. As such, we conclude that disparities between the - sentences of co-defendants ordinarily should *490 not be considered as a factor in the decision to depart from the Guidelines. Because district courts must only consider factors that have not been considered by the Sentencing Commission, see 28 U.S.C. § 3553(b), our holding that the naked existence of an unjustified disparity between the sentences of co-conspirators should not be considered as a basis for departure from the applicable sentencing range of the Guidelines does not conflict with the proscription in Koon that the appellate courts not create new classes of impermissible grounds for departure. As such, we believe that the sentencing court should consider only an “unjustified disparity” in the sentencing of co-defendants when the sentence imposed on the appellant co-defendant is “unjustified” in length in comparison tо the sentences imposed on all other individuals appropriately sentenced under the Guidelines for similar criminal conduct.
On this basis, we correct the dicta in
Meza
that suggests that an unjustified disparity in co-conspirators’ sentences should be considered as a factor in the decision to depart from the Guidelines. Instead, the sentencing court should consider unjustified disparities in only those cases where the unjustified disparity between co-defendants actually creates a disparity between the length of the appellant’s sentence and all other similar sentences imposed nationwide. We refrain from holding, however, that unjustified disparities may never be considered as bases for departure. In certain circumstances, such as when an unjustified disparity is created by the abuse of prosecutorial discretion,
but see United States v. Krilich,
Neither McMutuary nor Grier contend that the district court erred in the computation of their sentences, nor did the district court depart from the applicable Guidelines range in their sentences. Absent a claim that the court should have considered the unjustified disparity created by the improper sentence the court granted Brown, neither party could even aрpeal the court’s failure to consider a downward departure.
See United States v. Mattison,
III. Conclusion
For the reasons stated herein, we Affirm both the district court’s rejection of Grier’s motion to dismiss for pre-indict *491 ment delay and the sentences imposed on Grier and McMutuary by the district court.
This court originally affirmed in part and reversed in part the decisions of the district court in
United States v. McMutuary,
Because we now correct certain statements in
United States v. Meza,
Notes
. In
Meza,
we identified several examples of how a proper application of the Guidelines could create a sentencing disparity.
To bаse a defendant's sentence on a co-conspirator’s sentence is a short-sighted approach which ignores the Guidelines' attempt to eliminate unwarranted sentencing disparities nation-wide ... The Guidelines' goal of national sentencing uniformity is not aimed only at the particular criminal conduct that co-conspirators may share, but also addresses other factors that often vary between co-conspirators like acceptance of responsibility and assistance to the government.
. In its current form, 18 U.S.C. § 924(c)(l)(A)(i) provides:
[A]ny person who, during and in relation to any crime of violence or drug trafficking crime (including a crime of violence or drug trafficking crime that provides for an enhanced punishment if committed by the use of a deadly or dangerous weapon or device) for which the person may be prosecuted in a court of the United Statеs, uses or carries a firearm, or who, in furtherance of any such crime, possesses a firearm, shall, in addition to the punishment provided for such crime of violence or drug trafficking crime ... be sentenced to a term of imprisonment of not less than five years....
. 18 U.S.C. § 3553(e) provides:
Upon motion of the Government, the court shall have the authority to impose a sentence below a level established by statute as minimum sentence so as to reflect a defendant's substantial assistance in the investigation or prosecution of another person who has committed an offense.
Pursuant to 18 U.S.C. §.3553(f)(l)-(5), a defendant may also be eligible for a reduction below the mandatory minimum sentence if the sentencing court finds that the defendant has fulfilled five requirements.
See also
U.S.S.G. § 5C1.2 (reiterating these requirements). This section is referred to as a "safety valve” provision and limits the applicability of statutory minimum sentences as to "first-time, non-violent drug offenders who were not organizers of criminal activity and who have made a good faith effort to cooperate with the government.”
United States v. Arring-ton,
. The government's effort to cast the error made by the district court as a "non-Guidelines error” with the effect of 18 U.S.C. § 3553(e) operating completely outside the context of the Guidelines is of no avail. Proper application of the Guidelines requires more than a rote computation of Criminal History Categories and Guidelines ranges. Statutory mandatory minimum sentences are explicitly contemplated in several sections of the Guidelines, and the Guidelines address how courts should deal with such sentences. For example, U.S.S.G. § 2K2.4 specifically refers to the effect of § 924(c) upon a defendant's sen *488 tence: "If the defendant, whether or not convicted of another crime, was convicted under 18 U.S.C .... § 924(c)..., the term of imprisonment is that required by the statute.” U.S.S.G. § 2K2.4.
