§ 3.16 (A)
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(A) Inadmissibility Resulting from a Conviction of a Crime Relating to a Controlled Substance.
[A]ny alien convicted of, or who admits having committed, or who admits committing acts which constitute the essential elements of – (II) a violation of (or a conspiracy or attempt to violate) any law or regulation of a State, the United States, or a foreign country relating to a controlled substance (as defined in section 802 of Title 21), . . . is inadmissible.
 INA § 212(a)(2)(A)(i)(II), 8 U.S.C. § 1182(a)(2)(A)(i)(II).
 INA § 212(h), 8 U.S.C. § 1182(h).