Matter of G-A-, 7 I. & N. Dec. 274 (BIA 1956) (noncitizen in deportation proceedings allowed to apply for INA 212(c) relief where noncitizen had traveled out of the United States after conviction but before the deportation proceedings, on the theory that the INS should not have admitted the person after the conviction without a 212(c) waiver and that an IJ can grant the 212(c) waiver nunc pro tunc to the prior post-conviction/pre-deportation proceedings entry).  See also, Matter of Arias-Uribe, 13 I. & N. Dec. 696 (BIA 1971).