BIA

POST CON RELIEF - SENTENCE - VACATION OR REDUCTION OF SENTENCE IS EFFECTIVE FOR IMMIGRATION PURPOSES REGARDLESS OF THE CRIMINAL COURT'S REASONS FOR GRANTING IT
Matter of Cota-Vargas, 23 I. & N. Dec. 849 (BIA 2005) (criminal court's decision to modify or reduce a criminal sentence nunc pro tunc is entitled to full faith and credit by the Immigration Judges and the Board of Immigration Appeals, and such a modified or reduced sentence is recognized as valid for purposes of the immigration law without regard to the trial court's reasons for effecting the modification or reduction), clarifying Matter of Song, 23 I. & N. Dec. 173 (BIA 2001), distinguishing Matter of Pickering, 23 I. & N. Dec. 621 (BIA 2003), vacated by Pickering v. Gonzales, 465 F.3d 263 (6th Cir. 2006).
http://www.usdoj.gov/eoir/vll/intdec/vol23/3522.pdf