Crimes of Moral Turpitude

 (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.[211]

Waiver.  A waiver is available[212] to excuse this ground of inadmissibility, only “insofar as it relates to a single offense of simple possession of 30 grams or less of marijuana . . . .”[213] 

[211] INA § 212(a)(2)(A)(i)(II), 8 U.S.C. § 1182(a)(2)(A)(i)(II).

[212] INA § 212(h), 8 U.S.C. § 1182(h).

[213] Ibid.