In this appeal, the government seeks a reversal of defendant Kevin P. Kane’s sentence and a remand for resentencing within the guidelines promulgated by the United States Sentencing Commission under 28 U.S.C. § 994(a)(1) (Supp.V 1987) (the “guidelines”). Kane pleaded guilty to three counts of residential burglary within the special maritime and territorial jurisdiction of the United States in violation of 18 U.S.C. § 13 (1982) and Haw.Rev.Stat. § 708-810 (1985). His plea agreement recited that the guidelines would apply at sentencing. The guideline range applicable to Kane’s offense was 36 to 42 months of imprisonment followed by five or fewer years of supervised release. Before Kane’s sentencing, however, this court held the guidelines and the Sentencing Reform Act of 1984 unconstitutional.
Gubiensio-Ortiz v. Kanahele,
I.
Jurisdiction
Kane first contends that the government may not appeal his sentence. The Supreme Court has long held the view that the government has no right to appeal in a criminal case without explicit statutory authorization.
United States v. Scott,
Kane’s jurisdictional argument fails because it rests on the faulty premise that
Mistretta,
which overruled
Gubiensio-Ortiz,
does not apply retroactively. Although not constitutionally required, retroactive
*736
application of judicial decisions is the rule not the exception.
United States v. Givens,
Although
Mistretta
overruled
Gubiensio-Ortiz
and established the guidelines as the law of this circuit, Mistretta’s holding lacks the usual earmarks that accompany a new rule of law. When
Gubiensio-Ortiz
was decided, the guidelines were part of a properly enacted statutory sentencing scheme of which all defendants in this circuit had notice. Those defendants were also on notice that the Supreme Court had already granted certiorari in
Mistretta
and might overrule the holding of
Gubiensio-Ortiz. United States v. Mistretta,
— U.S. —,
II.
Double Jeopardy
Kane next contends that remanding for potential sentence enhancement would violate the fifth amendment’s proscription of twice placing a defendant in jeopardy for the same offense. Specifically, Kane argues that a sentence enhancement would subject him to multiple punishments for the same burglary conviction.
The double jeopardy clause prevents multiple trials on the same charge,
United States v. DiFrancesco,
Kane argues that he acquired a reasonable expectation of finality in his sentence before the Supreme Court decided Mistretta and that this expectation bars increasing his sentence under the guidelines. As support for this argument, Kane notes that under Gubiensio-Ortiz the guidelines were not the law of the Ninth Circuit until six months after he was sentenced. Furthermore, Kane posits that because of credit for three months of presen-tence jail time, he completed one-half of his 18-month sentence before Mistretta ren *737 dered the guidelines binding in the Ninth Circuit. According to Kane, the service of half of his sentence, which was legal when imposed, established the legitimacy of his expectation in finality before Mistretta was decided.
Kane draws on
Arrellano-Rios
for support, where this court concluded the double jeopardy clause prohibited enhancement of a sentence legally imposed and completely served by the time of appeal.
Of course, this case differs from
Arrellano-Rios
in that Kane has served only part of his sentence. But a more fundamental distinction arises in applying
Mistretta.
Under
Mistretta,
Kane’s sentence, unlike the sentence in
ArrellanoRios,
was illegally imposed because it was not calculated under the requirements of the Sentencing Reform Act. Generally, a defendant can acquire no expectation of finality in an illegal sentence, which remains subject to modification.
Edmonson,
In
Edmonson,
for instance, two district courts refused to convict separate defendants of the felony count charged in the indictment, choosing instead to convict and sentence for misdemeanor violations under an intervening amendment to the statute at issue.
When Kane executed the plea agreement, the Supreme Court had already certified the question of the guideline’s constitutionality. Moreover, the plea agreement recited Kane’s understanding that the district court would apply the guidelines. When the district court refused such application because of Gubiensio-Ortiz, it was apparent that the Supreme Court might soon overrule the basis for the district court’s refusal. Kane was also on notice that government appeals for misapplication of the guidelines were expressly authorized in the Sentencing Reform Act. 18 U.S.C. § 3742(b). The combined force of these circumstances precluded any reasonable expectation that Kane’s sentence was immune to modification in the event the Supreme Court overruled Gubiensio-Ortiz. A remand for resentencing will not violate the double jeopardy clause.
III.
Harmless Error
Kane’s third argument suggests that remand for resentencing under the guidelines is unwarranted because any error was harmless. See Fed.R.Crim.P. 52(a). Specifically, Kane maintains that under the guidelines, the district court would impose a sentence similar to Kane’s 18-month sentence because Kane’s acceptance of responsibility for the crime, honorable service in the Navy, and good behavior during pretrial imprisonment are considerations the judge mentioned at the sentencing hearing and mitigating factors that justify departure from Kane’s guideline range of 36 to 42 months.
The Sentencing Reform Act requires the imposition of a sentence within the applicable guideline range “unless the court finds *738 that there exists an aggravating or mitigating circumstance of a kind, or to a degree, not adequately taken into consideration by the Sentencing Commission in formulating the guidelines that should result in a [different sentence].” 18 U.S.C. § 3553(b) (Supp. V 1987). Even if Kane is correct that the factors expressed by the district court at sentencing could qualify as a basis for exceeding the lower end of Kane’s guideline range, this is a matter that must be considered by the district court in applying the Sentencing Reform Act.
We therefore vacate the sentence imposed and remand for resentencing under the Sentencing Reform Act of 1984.
VACATED and REMANDED.
