Matter of Bustamante, 25 I&N Dec. 564 (BIA 2011) (the bar to cancellation of removal, in INA 240A(b)(1)(C), 8 U.S.C. 1229b(b)(1)(C), which precludes an alien who has been convicted of an offense under INA 212(a)(2), 8 U.S.C. 1182(a)(2), from establishing eligibility for relief, may not be overcome by a waiver under INA 212(h)).
http://www.justice.gov/eoir/vll/intdec/vol25/3722.pdf