Rosales-Pineda v. Gonzales, 452 F.3d 627 (7th Cir. Jun. 19, 2006) (FBI rap sheet indicating conviction of a controlled substances offense, in conjunction with corroborating evidence, "reasonably indicated the existence of a criminal conviction," and was therefore sufficient to establish that noncitizen was ineligible for relief under INA 212(h)). See 8 C.F.R. 1003.41(d).
http://caselaw.lp.findlaw.com/data2/circs/7th/053188p.pdf

NOTE: The court noted the distinction between establishing the existence of a conviction and establishing that the nature of the conviction renders a noncitizen deportable. However, the court here apparently assumed that the mere existence of an unspecified controlled substances offense would be sufficient to disqualify the noncitizen from 212(h) relief, without addressing the exception allowing INA 212(h) relief for someone inadmissible based upon first time simple possession of under 30 grams of marijuana.