US v. Mao

Circuit 1Apr 29, 2026

Split Score

SplitScore: 72/100

Case Summary

Disposition

Affirmed

The First Circuit affirmed Michael Mao’s 121-month sentence, holding that his prior Virginia conviction for using a firearm during robbery is a crime of violence and that his federal conspiracy to distribute controlled substances counts as a controlled substance offense under the career-offender guideline. The court rejected Mao’s request to abandon First Circuit precedent on the latter point, acknowledging but declining to join the existing circuit split on whether inchoate drug crimes fall within § 4B1.2(b).

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Circuit Split Identified

Legal Issue

Whether inchoate drug offenses such as conspiracy qualify as a “controlled substance offense” under U.S.S.G. § 4B1.2(b) for purposes of the career-offender enhancement.

Circuit Positions

Circuit 1(this circuit)Circuit 2Circuit 5Circuit 7Circuit 8Circuit 10

Inchoate offenses (attempt, conspiracy, aiding and abetting) ARE controlled substance offenses under § 4B1.2(b); Application Note 1 is consistent and authoritative.

Circuit 4Circuit 9Circuit 11

Inchoate offenses are NOT controlled substance offenses under § 4B1.2(b); Application Note 1 improperly expands the guideline.

Conflict Summary

Several circuits (including the First) interpret § 4B1.2(b) together with Application Note 1 to include inchoate crimes like conspiracy and attempt, while other circuits hold that the text of § 4B1.2(b) is limited to completed drug-trafficking offenses and that the commentary cannot expand the guideline.

Parties & Counsel

Parties

Appellant:Michael Mao
Appellee:United States of America

Legal Counsel

Appellant:Rory A. McNamara, Drake Law LLC
Appellee:Mark T. Quinlivan, Assistant U.S. Attorney; Leah B. Foley, U.S. Attorney