Although stating in a footnote that [t]he decision to grant parole under [18 U.S.C.] 4202 lies with the Board of Parole, not with the District Judge, and must be made long after sentence has been entered and the prosecution terminated, we concluded that [w]hether 1103 (a) or the general saving statute, 1 U.S.C. 109, limits that decision is a question we cannot consider in this case. 410 U.S.,