Bobby DeWayne Johnson received a sentence that was seven and a half years more than the ten-year mandatory minimum due to the district court’s relevant conduct determination that he distributed 1.5 kilograms of crack сocaine. On appeal, he challenges the district court’s drug quantity calculation, arguing that the self-incriminating statement he made following his arrest was unreliable and should have been evaluated under a clear and convincing evidence standard of proof. We do not find Johnson’s statement unreliable, nor do we believe the district court was required to apply a higher standard of proof than the preponderance of the evidence standard. Therefore, we affirm Johnson’s conviction and sentence.
I. BACKGROUND
Johnson was arrested when he arrived at a hotel room to consummate a drug sale with a police informant. During the аrrest, the police searched Johnson and seized 10.8 grams of crack cocaine and .62 grams of heroin. Johnson began crying, stating that he was willing to cooperate and did not want to go to jail. He also told the officers that he had a large heroin habit of 2 grams per day. The following day, eleven hours after his arrest, Johnson was advised of his Miranda rights and agreed to make a statement. In his statement, he admitted that he had sold “l/16th” (one оunce) of crack cocaine to the informant six times in the past week and a half, and had sold one ounce of crack cocaine each day for the past seven or eight months. Johnson was indictеd for possession with the intent to distribute in excess of five grams of crack cocaine, in violation of 21 U.S.C. § 841(a)(1) and (b)(l)(B)(iii), and ultimately pled guilty to the charge without entering into a written plea agreement with the government.
Befоre Johnson pled guilty, the government filed an information which included, pursuant to 21 U.S.C. §§ 841, 850, and 851, giving the court and Johnson notice that he was subject to a mandatory minimum sentence of 10 years’ imprisonment and a maximum sentence of life imprisonment due to a previous felony drug conviction. At the guilty plea hearing, the government informed the court of Johnson’s post-arrest statement in which he admitted his involvement in the offense and detailed conduct that amounted to distribution in excess of 500 grams of crack cocaine. The district court determined that Johnson knew (1) he was pleading guilty to possessing in excess of 5 grams of crack cocaine with the intent to distribute, (2) he was facing a sentence of 10 years to life, and (3) because of his post-arrest statement his sentence could be severe. The court advised Johnson that, in addition to the 10.8 grams seized during his arrest, his accountability with resрect to other drugs would require a separate determination of relevant conduct that the court would make rather than a jury. Johnson acknowledged that he understood this process and, other than challenging that he sold more than 500 grams of crack cocaine, agreed with the government’s factual assertions.
At sentencing, the district judge reviewed the presentence investigation re *734 port (PSR) detailing Johnson’s relevant сonduct based on his post-arrest statement, which concluded that Johnson’s relevant conduct consisted of distributing in excess of 1.5 kilograms of crack cocaine. 1 Johnson objected to this calculation by challenging the reliability of his statement. He offered witnesses who testified that he may have been suffering from heroin withdrawal and desperate for more drugs at the time he made his statement. He also argued for a higher standard оf proof than the preponderance of the evidence standard. The district court adopted the PSR, overruled Johnson’s objection, and refused to apply a higher standard of proof. The court ruled that his relevant conduct was 1.5 kilograms or more of crack cocaine, which resulted in a sentencing range of 210 to 262 months’ imprisonment, and sentenced him to 210 months.
Johnson now appeals, renewing his argument that his post-arrest statement was unreliable. He asserts that his lengthy sentence amounts to “tail wagging the dog” because it was the result of his relevant conduct, and not the conduct that precipitated his arrest, and this conduct was nоt proved by clear and convincing evidence.
II. ANALYSIS
Relevant conduct determinations are factual findings that we review with great deference to the district court, reversing only in the case of clear error.
United States v. Carmack,
Here, Johnson’s relevant conduct was based on his post-arrest statement that he dealt оne ounce of crack cocaine every day for the preceding seven to eight months. Self-incriminating statements such as Johnson’s, which was clearly against his penal interest, “have long been considered rеliable enough for use at trial ..., so we cannot say that they are too unreliable for use at sentencing.”
United States v. Szakacs,
Nothing about Johnson’s case makes it different. Like the district court below, we are unpersuaded by Johnson’s argument that his heroin addiction mаkes his statement inherently unreliable. To sup *735 port his argument, Johnson offered the testimony of Dr. Jonathan Lipman, Ph.D., a neuropharmacologist, who testified that based on his review of Johnson’s arrest and hospitalization records, Johnson may have been suffering from heroin withdrawal at the time he made the statement and under such circumstances may have been willing to say anything in the hopes of being released and obtaining more drugs to feed his addiction. 3 Johnson also offered the testimony of Andrea Smith, an assistant federal public defender, who said that Johnson appeared to be suffering from severe heroin withdrawal when she met with him two days after his arrest (the day after he mаde his statement). Johnson, however, did not testify on his own behalf.
The officers who arrested Johnson and took his confession testified that he did not appear to be going through withdrawal at the time he confessed but instead seemed very alert and coherent. They also testified that he stated he wanted to cooperate, signed a written waiver of his
Miranda
rights, and read over and corrected his statement (initializing his corrections) before signing it. They further stated that while Johnson was willing to incriminate himself, he was unwilling to give the name of his drug supplier to the interrogating officers. The district court concluded that while the testimony proffered by Johnson was helpful in explaining thе progression of opiate withdrawal, it did not override the officers’ testimony that Johnson did not appear to be going through withdrawal at the time he made his statement. We accord exceptional deferеnce to a sentencing judge’s credibility determinations.
See, e.g., United States v. Johnson,
Johnson argues that his sentence amounts to a “tail wagging the dog” because it was his relevant conduct, and not the conduct that precipitated his arrest, that lengthened his sentence from ten yеars to seventeen and a half years, and that relevant conduct was not proved by clear and convincing evidence. “It is well-established that simply a preponderance of the evidence is all that is required for a factual finding under the Sentencing Guidelines.”
United States v. Porter,
III. CONCLUSION
For the foregoing reasons, the judgment of the district court is Affirmed.
Notes
. The 1.5 kilograms was reached by multiplying one ounce (28.35 grams) by 210 days (approximаtely 7 months) to arrive at 5,935.5 grams of crack cocaine.
. "Clear error review means that the district court's decision will not be reversed unless after reviewing the entire record we are left with a definite and firm conviсtion that a mistake has been committed.”
Id.
at 1276 (citing
United States v. Flores-Sandoval,
. Johnson also submitted a report of Dr. Heidi Israel, Ph.D., who, like Dr. Lipman, did not interview or examine Johnson, but who nevertheless opined that Johnson’s possible heroin withdrawal might have cаused him to say anything in order to obtain more drugs.
. While this case presents a sentence that is less troublesome than those which this court has previously rejected applying a higher standard of proof, the significant incrеase in Johnson’s sentence due to his self-incriminating statement, and the circumstances in which he gave it, underscore the need for the proper exercise of prosecutorial discretion. In this case, we
hope
that the prosecutors exercised this power with an eye toward justice, mindful of the discretion that is essential to the proper functioning of the criminal justice system.
See United States v. Zendeli,
