Ali v. U.S. Attorney General, ___ F.3d ___, 2006 WL 709870 (7th Cir. Mar. 22, 2006) (per curiam) (uncertified photocopy of purported pardon was "not sufficiently reliable to meet [] heavy evidentiary burden to reopen proceedings." even though it bore a signature and a seal, because under 8 C.F.R. 287.6, "an official record or entry . . . when admissible for any purpose, shall be evidenced by an official publication thereof, or by a copy attested by the official having legal custody of the record or by an authorized deputy;" although 287.6 is not the "exclusive" method of authentication, see Khan v. INS, 237 F.3d 1143, 1144 (9th Cir. 2001) (per curiam), noncitizen offered no compelling reason why a properly certified copy of the pardon could was not submitted).