Rodney Jensen pled guilty to conspiring to distribute more than 500 grams of methamphetamine, and to possessing with intent to distribute more than 500 grams of methamphetamine. Because he had sustained two previous convictions for drug trafficking offenses, Jensen was subject to a mandatory term of life imprisonment, pursuant to 21 U.S.C. §§ 841(b)(1)(A) and 851. As part of his *999 plea agreement, Jensen cooperated with law enforcement in the investigation and prosecution of other persons, and the government moved the- district court, pursuant to USSG § 5K1.1 and 18 U.S.C. § 3553(e), to reduce Jensen’s sentence from life imprisonment to a term of years.
The district court granted the motions and reduced Jensen’s sentence to 180 months’ imprisonment. The court specified that, for purposes of its analysis, it equated life imprisonment with a term of 360 months’ imprisonment. The court then reduced that sentence in two increments: first, to 216 months’ imprisonment based on Jensen’s substantial assistance in the investigation and prosecution of others, and second, to 180 months’ imprisonment based on other factors set forth in 18 U.S.C. § 3553(a).
Neither party is happy with the .sentence. Jensen argues that because he was 59 years old at the time of sentencing, and his personal life expectancy was thus less than 360 months, the district court should have adopted a shorter term of imprisonment as a “starting point” for analysis, and then reduced his sentence from there. The government contends that because the sentencing table published in the United States Sentencing Guidelines Manual extends as high as 405 months’ imprisonment, and because the Sentencing Commission has defined life sentences as 470 months in its annual Sourcebook for Federal Sentencing Statistics, the district court should have used a greater term of imprisonment as the starting point for its analysis. The government also argues that the district court was not permitted to reduce Jensen’s sentence based on factors set forth in 18 U.S.C. § 3553(a) that are unrelated to assistance.
Taking the last point first, we agree with the government that the district court’s reduction of sentence from 216 months to 180 months was contrary to law. When the government files a motion under 18 U.S.C. § 3553(e), the court- has “limited authority” to sentence a defendant below the statutory minimum. In
United States v. Williams,
The remaining question is whether the district court abused its discretion in reducing Jensen’s sentence from life imprisonment to 216 months. Jensen says the court should have analyzed the reduction by equating “life” with Jensen’s actual life expectancy of 20.49 years; and then reducing the sentence from there based on substantial assistance. We reject Jensen’s contention as inconsistent with the structure of the advisory guidelines. Departures and reductions based on substantial assistance are to be considered in the context of the advisory guidelines system,
see United States v. Saenz,
The government, on the other hand, contends the district court should have analyzed the reduction by equating “life” with a term of 470 months’ imprisonment. We did hold in
United States v. Keller,
We are doubtful about the district court’s use of 360 months’ imprisonment as a starting point, because that figure represents
no
incremental punishment from Level 42 to Level 43. In addition, the guideline sentencing table contemplates sentencing ranges that go as high as 405 months, so it would be odd to equate the maximum sentence of life with a lesser term of 360 months.
See Selby,
In this case, where the Sentencing Commission has not placed a number on “life” imprisonment for the purpose of prescribing an incremental punishment, we think it more helpful to view the district court’s reduction in terms of the incremental guideline ranges in the Sentencing Commission’s sentencing table.
Cf. id.
at 668. A sentence of life imprisonment corresponds to offense level 43 as a starting point,
see United States v. Nelson,
A reduction of six guideline ranges is significant in the context of an advisory guideline system where the degree of most aggravating and mitigating adjustments is two, three, or four offense levels.
Saenz,
The record here shows that Jensen was debriefed extensively by law enforcement agents concerning a substantial methamphetamine conspiracy, and that he was a prospective witness in the sentencing proceeding of a co-conspirator. (The conspirator ultimately stipulated to an enhancement as Jensen waited to testify). Jensen also identified the conspirators’ source of supply in Arizona — a major figure in the conspiracy — and testified in the grand jury in preparation for what the government characterized as a “probable future indictment.” (S. Tr. II at 7). The government stipulated that Jensen’s assistance was timely, complete, and truthful. While the reduction here is generous, and at or near the limit of what we could view as reasonable based on this level of assistance, we hold that the district court’s reduction of Jensen’s sentence by the equivalent of six guideline ranges was not an abuse of discretion.
For these reasons, we vacate the judgment of the district court and remand for *1002 imposition of a sentence of 216 months’ imprisonment.
