Tyrone G. Cooper was convicted of three counts of being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g)(1). The offenses occurred on August 24, 1991, September 24, 1991, and January 23, 1992. On appeal, Cooper argued that the district court violated the Ex Post Facto Clause in determining his sentence when it applied November 1, 1991, amendments to the Sentencing Guidelines. We affirmed,
United States v. Cooper,
We conclude the Supreme Court’s decision in
Morales
does not alter the result in this case.
Morales
did somewhat modify the law we applied in this case by stating that, to trigger the Ex Post Facto Clause prohibition, a change in the law must “increase[] the penalty by which a crime is punishable,” and not merely “disadvantage” the offender. — U.S. at-n. 3,
In his Supplemental Brief, Cooper argues that we erred in applying the Guidelines’ “one book” rule, U.S.S.G. § lBl.ll(a), because the Ex Post Facto Clause prohibits use of that rule when the effect is to increase the penalty for an offense committed before a Guidelines amendment. We disagree. Cooper committed three firearms offenses whose offense level is determined under § 2K2.1. Those offenses therefore “are to be grouped” under § 3D1.2. Application of the post-November 1, 1991, grouping rules increased Cooper’s penalty. Because the last of these groupable offenses occurred in January 1992, Cooper had “fair warning” of the total penalty this additional criminal conduct would entail.
Weaver v. Graham,
*763 Our prior opinion affirming Cooper’s conviction and sentence is hereby reinstated.
