This is Behler’s third appeal of the sentence imposed upon him following his 1992 convictions on several drug trafficking charges. As a result of the most recent remand, the district court 2 imposed a two-level sentencing enhancement after finding that Behler possessed a firearm during the commission of his drug crimes. See U.S. Sentencing Guidelines Manual § 2D1.1(b)(1) (Oct.1987). Behler argues that the district court erred by applying this enhancement, by not reopening all sentencing issues, and by ordering special conditions of supervised release. We affirm.
I.
The facts underlying Behler’s drug trafficking convictions are fully set forth in our prior opinions.
See United States v. Behler,
In May 1989, while monitoring his telephone calls, law enforcement officials learned that Behler planned to engage in a methamphetamine transaction at his residence. Law enforcement officers maintained surveillance of Behler’s residence and following the methamphetamine sale, they arrested Behler and searched the residence. Officers found, among other *776 things, a loaded .44 magnum handgun and a small amount of methamphetamine. Id. at 1266-67. A federal indictment charged Behler with conspiracy to distribute methamphetamine (count I), use of a firearm in relation to a drug trafficking offense in violation of 18 U.S.C. § 924(c) (count II), use of a telephone in furtherance of a drug felony (count III), and distribution of methamphetamine (count IV). A federal jury found Behler guilty on all four counts. Id. at 1267.
In Behler’s first appeal, we affirmed his convictions but remanded for resentencing on three of the four counts due to an ex post facto violation in the district court’s application of the United States Sentencing Guidelines.
See Behler I,
On remand, the government chose to dismiss the section 924(c) firearms charge and instead sought to add a two-level sentencing enhancement pursuant to USSG § 2Dl.l(b)(l). This adjustment applies if a defendant possessed a firearm during the commission of a drug offense. The district court ordered the preparation of a new presentence investigation report and scheduled a resentencing hearing to address the issue. At the resentencing hearing, Behler argued that the vacation of his section 924(c) conviction required the district court to reopen all sentencing issues, and he specifically challenged the previously imposed enhancements for his role in the offense and obstruction of justice. The district court concluded that the only issue before it was the propriety of the section 2Dl.l(b)(l) enhancement, which the court found applied in this case because Behler possessed a firearm during his drug offenses. In an abundance of caution, however, the district court alternatively found that the originally imposed enhancements still were appropriate. Behler appeals.
II.
A.
Behler argues that the vacation of his section 924(c) conviction unbundled his entire sentencing package and reopened the judgment for de novo consideration by the resentencing court.
See Gardiner v. United States,
On remand for resentencing, a district court can hear any relevant evidence that it could have heard at the first hearing, but “all issues decided by the appellate court become the law of the case.”
Behler II,
The law of this case precluded the district court from reopening issues of Behler’s role in the offense or obstruction of justice. In Behler’s first appeal, we affirmed Behler’s convictions and specifically affirmed the district court’s findings concerning Behler’s role in the offense and his obstruction of justice.
See Behler I,
Additionally, our prior opinion limited the scope of the remand. We expressly stated that we were provisionally vacating the drug convictions for one purpose: “so that the district court may consider whether Behler’s sentence on the drug counts should be enhanced under USSG § 2Dl.l(b)(l) (Oct.1987).”
Behler II,
B.
Behler argues that the district court erred in assessing a two-level sentencing enhancement pursuant to USSG § 2D1.1(b)(1). Basically, Behler contends that the government’s witnesses were not credible and that the government failed to prove a nexus between his possession of a firearm and his drug activities. The district court’s assessment of credibility, however, is virtually unreviewable,
see United States v. Phelps,
Section 2D1.1(b)(1) mandates a two-level increase to a defendant’s base offense level if the defendant possessed a firearm or other dangerous weapon during the commission of the offense. Sentencing courts are required to apply this adjustment if a weapon was present, “unless it is clearly improbable that the weapon was connected with the offense. For example, the enhancement would not be applied if the defendant, arrested at his residence, had an unloaded hunting rifle in the closet.” USSG § 2Dl.l(b)(l), comment, (n. 3) (Oct.1987). Thus, we will sustain an enhancement pursuant to this specific offense characteristic if the government shows first “that the weapon was present and second, that it was not clearly improbable that the weapon had a nexus with the criminal activity.”
Brown v. United States,
Behler does not challenge the presence of a firearm, but he contends that it was only used for hunting purposes as his witnesses testified at the resentencing hearing. Although the district court credited the testimony of Behler’s witnesses, their testimony is inapposite because they admitted they were not involved in Behler’s drug dealing activities. Their testimony thus has no direct bearing on whether Behler carried a firearm in connection with his drug offenses. The government presented F.B.I. testimony of statements made by Behler’s ex-wife, Joannie Behler Moore. She began living with Behler sometime before their marriage in 1989 and remained married to him until 1993. During their relationship, she traveled with Behler to Colorado on trips to purchase methamphetamine. She told F.B.I. *778 Special Agent Humphrey that• Behler carried a gun on those trips and usually kept it on the front seat of the car. The district court considered the similar trial testimo-fly of Linda Wiegert and Nora Houston, Behler's prior live-in girlfriends, who said Behler always had a gun in the car on their trips to Colorado to purchase drugs. The district court also noted that on the day of Behler's arrest following a drug transaction at his residence, law enforcement officials found a gun in Behler's bedroom. Based on all of this evidence, the district court found that Behler had possessed a firearm during the commission of his crimes and imposed the two-level enhancement pursuant to USSG § 2D1.1(b)(1).
Having reviewed the record and the district court's memorandum, we see no reason to second-guess the district court's credibility assessments, and the district court did not clearly err in finding that Behler possessed a firearm during the commission of his drug trafficking offenses. See, e.g., United States v. Hall,
C.
Behler argues that the district court abused its discretion in formulating special conditions for his supervised release. 3 Specifically, Behier challenges three special terms: (1) the total prohibition on his purchase, use, or distribution of alcohol; (2) the requirement that he attend and complete any diagnostic evaluation, treatment, or counseling program for alcohol andJor controlled substances as directed by his probation officer; and (3) the requirement that he provide his probation officer with access to any requested financial information.
We afford sentencing judges wide discretion when imposing terms of supervised release. See United States v. Prendergast,
First, Behier argues that the restriction on the purchase or use of alcohol is not warranted because his offense did
*779
not involve alcohol, the record contains no evidence that he has ever abused alcohol, and the sentencing recommendation suggests a mere possibility of cross addiction. We have held that a sentencing court abuses its discretion by imposing a total alcohol ban in circumstances where the record evidence does not support such a restriction.
See, e.g., United States v. Bass,
Relying on
Prendergast,
we also found an abuse of discretion where the district court imposed a total alcohol prohibition on a defendant convicted of a drug trafficking crime.
See Bass,
Behler’s case presents a close question on this issue, but we believe his case is ultimately distinguishable from those listed above. Behler’s crimes involved substantial drug trafficking of methamphetamine while possessing a firearm. His personal history includes years of substance abuse (admittedly from 1968 to 1989), consisting largely of methamphetamine abuse along with infrequent use of cocaine and LSD. Though he describes his use of alcohol as moderate, the evidence before the district court in the form of the probation officer’s confidential sentencing recommendation, indicated that any use of alcohol would limit Behler’s ability to maintain a drug-free lifestyle. {See Sent. Recommendation at 2, May 21, 1998) (“[Ajccording to the National Institute on Drug Abuse (1994), the use of any intoxicants, including alcohol, limits a recovering person’s ability to maintain a drug-free lifestyle.”). Additionally, the record indicates that any use of alcohol is inconsistent with the treatment philosophy of most substance abuse recovery programs nationwide. Thus, unlike the situation in Bass where we said the district court’s reasoning was based on nothing more than an assumption, the record in the present case provided the necessary foundation for determining that any alcohol use would hinder the defendant’s rehabilitation process.
To Behler’s credit, we note that there is no indication that alcohol played any role in his offense, and his probation officer indicated that “there is no direct evidence that the defendant has ever abused alcohol.” (Sent. Recomm. at 2, May 21, 1998.) He has no family history of alcohol abuse, no prior offenses resulting from the use of alcohol, and during his stay in prison since 1992, he has completed a substance abuse treatment program. Nevertheless, the district court was entitled to rely on the evidence of record indicating that an alcohol ban is necessary for Behler’s total rehabilitation. This is consistent with the statutory goals of deterrence and protecting the public from future offenses. Our prior case law limits the district court’s discretion only insofar as the court imposes limitations on the basis of pure speculation or assumptions unrelated to the rehabilitative process.
See Bass,
*780 Second, Behler challenges the condition that he attend and pay for any diagnostic evaluation, counseling, or treatment as directed by his probation officer. Behler asserts that he has no ongoing substance abuse or alcohol problem to warrant this imposition and that such programs have a religious component in which he cannot be forced to participate. This special condition allows Behler’s probation officer to seek evaluations to indicate whether or not further substance abuse treatment is necessary, and it does not specifically designate any particular treatment program (except by example). When imposing this condition, the district court commented, “I don’t expect any problem with drinking or drugs by you, Mr. Behler, and I’m putting that in only in case some future problem does develop.” (Sent. Tr. at 143.)
Participation in an approved substance abuse program is a discretionary condition that may be imposed “[i]f the court has reason to believe that the defendant is an abuser of narcotics, other controlled substances or alcohol.” USSG § 5B1.4(b)(23) (Oct.1987);
accord United States v. Cooper,
Third, Behler argues that because he was not ordered to pay restitution or a fine, the district court abused its discretion by ordering him to provide his probation officer with access to financial information. We disagree. The United States Sentencing Guidelines provide a policy statement recommending that the district court impose a special condition requiring access to requested financial information “[i]f the court imposes an order of restitution, forfeiture, or notice to victims, or orders the defendant to pay a fíne.” USSG § 6B1.4(b)(18) (Oet.1987). This policy statement, however, does not preclude the district court from requiring financial disclosure in otherwise appropriate situations, for instance, when warranted by the nature and characteristics of the offense and the need for deterrence and protection as articulated in 18 U.S.C. § 3553(a). In this case, the district court understood that money and greed were at the heart of Behler’s drug distribution offenses and believed that monitoring Beh-ler’s financial situation would aid in detecting any return to his former lifestyle of drug distribution. We conclude that these findings are consistent with the statutory factors and the Sentencing Commission’s policy statements.
D.
We have considered the arguments made in Behler’s pro se brief and find them to be without merit. Finally, we deny his motion to supplement the record and to proceed under duress and protest.
III.
Accordingly, we affirm the judgment of the district court.
Notes
. The Honorable Warren K. Urbom, United States District Judge for the District of Nebraska.
. As an aside, we note that the law of the case did not preclude the district court from imposing new terms of supervised release on remand. The district court is free to modify the terms of supervised release at any time after considering factors such as the nature and circumstances of the offense or the history and characteristics of the defendant. See United States v. Yankton,
