Moreover, in those cases we were deciding the retroactivity of the changes in immigration law. See Pinho, 249 F.3d at 187 (determining retroactive effect of stop-time provision implicated by IIRIRA); Bury v. Reno, 101 F.Supp.2d 296, 299 (E.D.Pa. 2000) (noting issuance of OSC rather than filing is "the meaningful event for the purpose of determining whether a proceeding was subject to a newly enacted law"); Canela v. United States DOJ, 64 F.Supp.2d 456, 458 (E.D.Pa. 1999) (examining retroactive effect of AEDPA on INS proceedings). Here, it is clear that proceedings were initiated against DiPeppe when the charging documents were filed with the Immigration Court.