§6A1.1. Presentence Report (Policy Statement)
A probation officer shall conduct a presentence investigation and report to the court before the imposition of sentence unless the court finds that there is information in the record sufficient to enable the meaningful exercise of sentencing authority pursuant to 18 U.S.C. § 3553, and the court explains this finding on the record. Rule 32(b)(1), Fed. R. Crim. P. The defendant may not waive preparation of the presentence report.
A thorough presentence investigation is essential in determining the facts relevant to sentencing. In order to ensure that the sentencing judge will have information sufficient to determine the appropriate sentence, Congress deleted provisions of Rule 32(c), Fed. R. Crim. P., which previously permitted the defendant to waive the presentence report. Rule 32(b)(1) permits the judge to dispense with a presentence report, but only after explaining, on the record, why sufficient information is already available.