27 CFR § 72.11
Commercial crimes. Any of the following types of crimes (Federal or State): Offenses against the revenue laws; burglary; counterfeiting; forgery; kidnapping; larceny; robbery; illegal sale or possession of deadly weapons; prostitution (including soliciting, procuring, pandering, white slaving, keeping house of ill fame, and like offenses); extortion; swindling and confidence games; and attempting to commit, conspiring to commit, or compounding any of the foregoing crimes. Addiction to narcotic drugs and use of marihuana will be treated as if such were commercial crime.
Commercial (adj): engaging in trade.
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