Whether the language 'death or serious bodily injury results from' in 21 U.S.C. § 841 creates a strict liability crime, without a foreseeability or proximate cause requirement?

QUESTIONS PRESENTED FOR REVIEW 1. Whether the language “death or serious bodily injury results from” in 21 U.S.C. § 841 creates a strict liability crime, without a foreseeability or proximate cause requirement? 2. Whether a person distributing heroin can be convicted of causing serious bodily injury when his heroin was redistributed to an end user and his original distribution was not the last “but for” cause of the serious bodily injury? 1