Matter of Leon-Ruiz, 21 I. & N. Dec. 154, 1996 WL 23408 (BIA Jan. 3, 1996) (availability of post-conviction collateral attack does not affect the finality of the conviction for immigration purposes, unless and until the conviction has been overturned pursuant to such a motion). See Okabe v. INS, 671 F.2d 863, 865 (5th Cir.1982); Aguilera-Enriquez v. INS, 516 F.2d 565, 570 (6th Cir.1975), cert. denied, 423 U.S. 1050 (1976); Matter of Gabryelsky, Interim Decision 3213, at 3-4 (BIA 1993); Matter of Adetiba, Interim Decision 3177, at 4-5 (BIA 1992).