Whether the 'death enhancement' of 21 U.S.C. § 841(b)(1)(C) requires proximate causation

QUESTION PRESENTED FOR REVIEW I Whether the “death enhancement” of 21 U.S.C. § 841(b)(1)(C) requires proximate causation when the statute’s language is ambiguous — triggering the rule of lenity in favor of its requirement — and general criminal law principles and this Court’s jurisprudence favor proximate cause. 1