the original form of the authorizing statute would nonetheless be saved under the general savings statute, 1 U.S.C. § 109, which provides: The repeal of any statute shall not have the effect to release or extinguish any penalty, forfeiture, or liability incurred under such statute, unless the repealing Act shall so expressly provide, and such statute shall be treated as still remaining in force for the purpose of sustaining any proper action or prosecution for the enforcement of such penalty, forfeiture, or liability. This provision reversed the common-law rule, under which the repeal of a criminal law “preclude[d] punishment for acts antedating the repeal.” Landgraf 511 U.S. at 271, 114 S.Ct. 1483; see also Yeaton v. United States, 9 U.S. (5 Cranch) 281, 283, 3 L.Ed. 101 (1809) (<HOLDING>). Accordingly, “unless [a] repealing statute
holding no violation of ex post facto clause because enhancement provision increases the punishment for being a felon in possession of a firearm that traveled in or affected interstate commerce and it does not affect the punishment previously meted out to the defendant for the  crimes he committed prior to the effective date of the statute holding that a statute may be facially challenged only  by establishing that no set of circumstances exists under which the statute would be valid ie that the law is unconstitutional in all of its applications or at least that the statute lacks a plainly legitimate sweep  holding that when a statute is patterned after a similar provision in another states statute it is proper to resort to judicial constructions placed on the statute by the courts of the state whose statute provided the model in determining the proper construction   holding that an executive order authorized by statute and intended to implement or supplement that statute has the force of law holding that when a criminal statute expires or is repealed no penalty can be enforced nor punishment inflicted for violations of the law committed while it was in force unless some special provision be made for that purpose by statute