Whether commentary that interprets or explains a Sentencing Guideline is binding on federal courts.
Holding
Yes. Interpretive and explanatory Guidelines commentary is authoritative unless it violates the Constitution or a federal statute, or is inconsistent with, or a plainly erroneous reading of, the Guideline it interprets.
Reasoning
The Sentencing Reform Act makes the Guidelines binding in sentencing, and the Court had already held in Williams v. United States that a policy statement can be an authoritative guide to a Guideline’s meaning. Commentary that interprets a Guideline or explains its application performs a comparable function. Failure to follow such commentary may therefore produce an incorrect application of the Guidelines and require reversal under 18 U.S.C. § 3742(f)(1).
The Court rejected treating commentary merely as legislative history or as a belated statement of the Commission’s original intent. Commentary may be issued after a Guideline, and neither the statute nor the Manual makes its weight turn on whether it was adopted contemporaneously with the Guideline.
The better analogy is an agency’s interpretation of its own legislative rule. Congress delegated rulemaking authority to the Sentencing Commission, and the Commission promulgates the Guidelines through rulemaking procedures. Commentary helps apply the Commission’s own rules in the Commission’s area of expertise, so it receives controlling weight under the Seminole Rock standard unless it is plainly erroneous or inconsistent with the relevant Guideline.
Congress’s lack of direct review over commentary amendments did not change the result. The Commission has an ongoing statutory duty to review and revise the Guidelines, and it may clarify a Guideline through commentary so long as the Guideline’s text can bear the interpretation. Earlier judicial interpretations cannot prevent the Commission from issuing a valid, contrary clarification.