MAGILL, Circuit Judge.
Joseph F. Calva appeals his sentence after pleading guilty to distributing cocaine, operating an illegal gambling enterprise, and money laundering. Since we find that Calva’s constitutional challenges to the Sentencing Guidelines are precluded by this court’s prior holdings, and that his other claims are without merit, we affirm.
I.
Calva pleaded guilty to a three-count indictment, charging him with: (1) distribution of cocaine, in violation of 21 U.S.C. § 841 (1988); (2) conducting an illegal gambling operation involving five or more persons, in violation ' of 18 U.S.C. § 1955 (1988);1 and (3) acceptance of United States currency which was represented to be the proceeds of the sale of a controlled substance, in violation of 18 U.S.C. § 1956(a)(3) (1988). The district court2 sentenced Calva to thirty-six months imprisonment.3
[121]*121The indictment charged Calva with a single drug distribution count for selling two ounces of cocaine to an undercover government informant. Nevertheless, the government alleged for sentencing purposes that Calva distributed 34Vs ounces of cocaine.4 The government specifically alleged that a witness purchased 24 ounces of cocaine from Calva during a period ending in June of 1990. During that same period and up until January 24, 1991, the government made twelve additional purchases from Cal-va totalling 10% ounces. During one of these undercover buys, a confidential informant purchased two ounces of cocaine from Calva. At the instruction of the government, the informant told Calva before the sale that the purchase money was the product of the illegal sale of other drugs. This transaction accounted for the cocaine distribution and money-laundering charges in the indictment.
Calva challenges his sentence on several grounds. First, he argues the inclusion of an additional 32Vs ounces of cocaine — as uncharged relevant conduct — to the amount of drugs named in the indictment violates the Fifth and Sixth Amendments to the Constitution. Second, he argues that the United States Sentencing Commission exceeded its statutory authority in promulgating the uncharged relevant conduct provision in U.S.S.G. § lB1.3(a)(2). Third, he argues the government violated his due process rights by continuing to make cocaine purchases from him in order to increase his sentence. Finally, he argues that the government' committed sentencing entrapment when the informant told Calva that the money the informant used to purchase the cocaine came from an illegal drug transaction.
A. Constitutionality of § lB1.3(a)(2) The United States Sentencing Guidelines provide that in determining the base offense level, the court shall group “all such acts and omissions that were part of the same course of conduct or common scheme or plan as the offense of conviction.” U.S.S.G. § lB1.3(a)(2). The background note to this section provides, “in a drug distribution case, quantities and types of drugs not specified in the count of conviction are to be included in determining the offense level if they were part of the same course of conduct or part of a common scheme or plan as the count of conviction.” U.S.S.G. § 1B1,3(a)(2) background note.
Calva contends the inclusion of uncharged drug quantities in the computation of his sentence violates his constitutional rights to indictment, jury trial, and confrontation under the Fifth and Sixth Amendments to the Constitution. We find that Calva’s constitutional claims are controlled by two recent en banc decisions of this court.
First, in United States v. Galloway, 976 F.2d 414, 425 (8th Cir.1992) (en banc), we held that sentencing enhancement based on uncharged relevant conduct that is proven by a preponderance of the evidence does not violate constitutional rights to indictment, jury trial, and proof beyond a reasonable doubt. We based our decision on the Supreme Court’s opinion in McMillan v. Pennsylvania, 477 U.S. 79, 106 S.Ct. 2411, 91 L.Ed.2d 67 (1986), which held constitutional a Pennsylvania statute providing for a mandatory minimum sentence of five years imprisonment whenever the sentencing judge finds, by a preponderance of the evidence, that the person “visibly possessed a firearm” during the commission of certain specified offenses. Like the Supreme Court in McMillan, we drew a distinction between the rights enjoyed by criminal defendants at the guilt and sentencing phases of their case.
[122]*122[T]he Sentencing Guidelines do not create separate offenses with separate penalties. The Guidelines operate only at the sentencing stage, after the accused has been afforded the full panoply of constitutional protections and found guilty beyond a reasonable doubt. The Guidelines are a direct reflection of the bifurcated nature of our criminal process, which separates trial and conviction from sentencing.
Galloway, 976 F.2d at 424. Because the full panoply of constitutional rights no longer attaches after a defendant has been adjudged guilty, the imposition of sentencing factors based on proof by a preponderance of the evidence does not violate the constitution. Id. at 425. See also United States v. Wise, 976 F.2d 393, 400 (8th Cir.1992) (en banc); United States v. Mobley, 956 F.2d 450, 455 (3d Cir.1992); United States v. Restrepo, 946 F.2d 654, 661 (9th Cir.1991) (en banc), cert. denied, — U.S. -, 112 S.Ct. 1564, 112 S.Ct. 1564, 118 L.Ed.2d 211 (1992).
Second, Calva’s claim that a sentence enhancement for uncharged relevant conduct under U.S.S.G. § lB1.3(a)(2) violates his right to confront witnesses is controlled by our recent en banc decision in Wise, 976 F.2d at 400. In Wise, we held that the right to confront witnesses does not attach at the sentencing phase. We found that the guidelines did not alter the pre-guidelines sentencing policy that a criminal defendant had no right to confront witnesses at the sentencing phase of his trial. Id. Therefore, we conclude that the uncharged relevant conduct provisions of the Sentencing Guidelines do not violate Calva’s constitutional rights to indictment, jury trial, and confrontation.
We noted in Galloway that sentences imposed based on sentencing factors other than the charged offense may violate due process if the resulting sentence overwhelms or is extremely disproportionate to the punishment that would otherwise be imposed. Galloway, 976 F.2d at 426. See also Wise, 976 F.2d at 401 (legislature may not impose sentencing factors that become “a tail which wags the dog of the substantive offense”) (quoting McMillan, 477 U.S. at 87-88, 106 S.Ct. at 2416-17); Restrepo, 946 F.2d at 659-60. We found in Galloway,
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MAGILL, Circuit Judge.
Joseph F. Calva appeals his sentence after pleading guilty to distributing cocaine, operating an illegal gambling enterprise, and money laundering. Since we find that Calva’s constitutional challenges to the Sentencing Guidelines are precluded by this court’s prior holdings, and that his other claims are without merit, we affirm.
I.
Calva pleaded guilty to a three-count indictment, charging him with: (1) distribution of cocaine, in violation of 21 U.S.C. § 841 (1988); (2) conducting an illegal gambling operation involving five or more persons, in violation ' of 18 U.S.C. § 1955 (1988);1 and (3) acceptance of United States currency which was represented to be the proceeds of the sale of a controlled substance, in violation of 18 U.S.C. § 1956(a)(3) (1988). The district court2 sentenced Calva to thirty-six months imprisonment.3
[121]*121The indictment charged Calva with a single drug distribution count for selling two ounces of cocaine to an undercover government informant. Nevertheless, the government alleged for sentencing purposes that Calva distributed 34Vs ounces of cocaine.4 The government specifically alleged that a witness purchased 24 ounces of cocaine from Calva during a period ending in June of 1990. During that same period and up until January 24, 1991, the government made twelve additional purchases from Cal-va totalling 10% ounces. During one of these undercover buys, a confidential informant purchased two ounces of cocaine from Calva. At the instruction of the government, the informant told Calva before the sale that the purchase money was the product of the illegal sale of other drugs. This transaction accounted for the cocaine distribution and money-laundering charges in the indictment.
Calva challenges his sentence on several grounds. First, he argues the inclusion of an additional 32Vs ounces of cocaine — as uncharged relevant conduct — to the amount of drugs named in the indictment violates the Fifth and Sixth Amendments to the Constitution. Second, he argues that the United States Sentencing Commission exceeded its statutory authority in promulgating the uncharged relevant conduct provision in U.S.S.G. § lB1.3(a)(2). Third, he argues the government violated his due process rights by continuing to make cocaine purchases from him in order to increase his sentence. Finally, he argues that the government' committed sentencing entrapment when the informant told Calva that the money the informant used to purchase the cocaine came from an illegal drug transaction.
A. Constitutionality of § lB1.3(a)(2) The United States Sentencing Guidelines provide that in determining the base offense level, the court shall group “all such acts and omissions that were part of the same course of conduct or common scheme or plan as the offense of conviction.” U.S.S.G. § lB1.3(a)(2). The background note to this section provides, “in a drug distribution case, quantities and types of drugs not specified in the count of conviction are to be included in determining the offense level if they were part of the same course of conduct or part of a common scheme or plan as the count of conviction.” U.S.S.G. § 1B1,3(a)(2) background note.
Calva contends the inclusion of uncharged drug quantities in the computation of his sentence violates his constitutional rights to indictment, jury trial, and confrontation under the Fifth and Sixth Amendments to the Constitution. We find that Calva’s constitutional claims are controlled by two recent en banc decisions of this court.
First, in United States v. Galloway, 976 F.2d 414, 425 (8th Cir.1992) (en banc), we held that sentencing enhancement based on uncharged relevant conduct that is proven by a preponderance of the evidence does not violate constitutional rights to indictment, jury trial, and proof beyond a reasonable doubt. We based our decision on the Supreme Court’s opinion in McMillan v. Pennsylvania, 477 U.S. 79, 106 S.Ct. 2411, 91 L.Ed.2d 67 (1986), which held constitutional a Pennsylvania statute providing for a mandatory minimum sentence of five years imprisonment whenever the sentencing judge finds, by a preponderance of the evidence, that the person “visibly possessed a firearm” during the commission of certain specified offenses. Like the Supreme Court in McMillan, we drew a distinction between the rights enjoyed by criminal defendants at the guilt and sentencing phases of their case.
[122]*122[T]he Sentencing Guidelines do not create separate offenses with separate penalties. The Guidelines operate only at the sentencing stage, after the accused has been afforded the full panoply of constitutional protections and found guilty beyond a reasonable doubt. The Guidelines are a direct reflection of the bifurcated nature of our criminal process, which separates trial and conviction from sentencing.
Galloway, 976 F.2d at 424. Because the full panoply of constitutional rights no longer attaches after a defendant has been adjudged guilty, the imposition of sentencing factors based on proof by a preponderance of the evidence does not violate the constitution. Id. at 425. See also United States v. Wise, 976 F.2d 393, 400 (8th Cir.1992) (en banc); United States v. Mobley, 956 F.2d 450, 455 (3d Cir.1992); United States v. Restrepo, 946 F.2d 654, 661 (9th Cir.1991) (en banc), cert. denied, — U.S. -, 112 S.Ct. 1564, 112 S.Ct. 1564, 118 L.Ed.2d 211 (1992).
Second, Calva’s claim that a sentence enhancement for uncharged relevant conduct under U.S.S.G. § lB1.3(a)(2) violates his right to confront witnesses is controlled by our recent en banc decision in Wise, 976 F.2d at 400. In Wise, we held that the right to confront witnesses does not attach at the sentencing phase. We found that the guidelines did not alter the pre-guidelines sentencing policy that a criminal defendant had no right to confront witnesses at the sentencing phase of his trial. Id. Therefore, we conclude that the uncharged relevant conduct provisions of the Sentencing Guidelines do not violate Calva’s constitutional rights to indictment, jury trial, and confrontation.
We noted in Galloway that sentences imposed based on sentencing factors other than the charged offense may violate due process if the resulting sentence overwhelms or is extremely disproportionate to the punishment that would otherwise be imposed. Galloway, 976 F.2d at 426. See also Wise, 976 F.2d at 401 (legislature may not impose sentencing factors that become “a tail which wags the dog of the substantive offense”) (quoting McMillan, 477 U.S. at 87-88, 106 S.Ct. at 2416-17); Restrepo, 946 F.2d at 659-60. We found in Galloway, however, that a sentence that is nearly tripled after application of U.S.S.G. § lB1.3(a)(2) is not sufficiently overwhelming to raise due process concerns. Galloway, 976 F.2d at 426. In this case, the sentence enhancement received by Calva under U.S.S.G. § lB1.3(a)(2) does not even double the sentence he would have received had he been sentenced merely on the charged conduct. Clearly, his sentence enhancement has not grown into a tail wagging the dog of his substantive offense. Therefore, his sentence does not violate due process.
B. Statutory Authority
Calva argues that the Sentencing Commission exceeded its statutory authority in promulgating U.S.S.G. § 1B1.3(a)(2). Galloway again controls our holding on this issue. After reviewing the statutory history of the sentencing guidelines and related law, we concluded that Congress granted the Sentencing Commission full authority to adopt a relevant conduct guideline. Galloway, 976 F.2d at 420. See also United States v. Ebbole, 917 F.2d 1495, 1501 (7th Cir.1990).
C. Government Conduct
Calva concedes the defense of entrapment is not available to him because he had shown a predisposition to commit drug sales. Nevertheless, Calva argues his due process rights, were violated by the government’s continued cocaine purchases. Since the government indicted him on the basis of one two-ounce sale, he claims the remaining 8V8 ounces that he sold to the government informant resulted from sales instigated by the government merely to increase his sentence and, therefore, constituted sentencing entrapment in violation of his due process rights.
This court has intimated that there may exist a “sentencing entrapment” claim that arises - when the government ratchets up a defendant’s drug sales or other conduct merely to increase his sentence. United [123]*123States v. Stuart, 923 F.2d 607, 614 (8th Cir.), cert. denied, — U.S. -, 111 S.Ct. 1599, 113 L.Ed.2d 662 (1991); United States v. Lenfesty, 923 F.2d 1293, 1300 (8th Cir.), cert. denied, — U.S. -, 111 S.Ct. 1602, 113 L.Ed.2d 665 (1991); See also United States v. Barth, 788 F.Supp. 1055 (D.Minn.1992).
Calva has presented no evidence, however, that the government continued purchases merely to enhance his eventual sentence. While the Sentencing Guidelines’ mechanism of boosting sentences based on the cumulation of additional drug sales has the potential for abuse by police, this is not such a case. Police must be given sufficient leeway to construct cases built on evidence that proves guilt beyond a reasonable doubt. Police also must be given leeway to probe the depth and extent of a criminal enterprise, to determine whether coconspirators exist, and to trace the drug deeper into the distribution hierarchy.
The government in this case continued purchases of narcotics from Calva for a reasonable period in order to probe the extent of the distribution ring, identify for-feitable assets, and to snare Calva’s supplier. The government succeeded in this endeavor, locating considerable forfeitable assets, snaring Calva’s cocaine supplier, and arresting a coconspirator. Therefore, the government’s actions clearly did not constitute sentencing entrapment. Moreover, government conduct in this case was not so egregious as to constitute a violation of Calva’s due process rights. Lenfesty, 923 F.2d at 1300 (“Where outrageous official conduct overcomes the will of an individual predisposed only to dealing in small quantities, this (sentencing entrapment) contention might bear fruit.”); United States v. Russell, 411 U.S. 423, 431-32, 93 S.Ct. 1637, 1642-43, 36 L.Ed.2d 366 (1973) (“[W]e may some day be presented with a situation in which the conduct of law enforcement agents is so outrageous that due process principles would absolutely bar the government from invoking judicial processes to obtain a conviction.”).
D. Money Laundering
Calva argues a similar entrapment claim regarding the money laundering conviction. He argues the government informant’s statement that the money he was using to purchase drugs from Calva came from the illegal sales of drugs constituted sentencing entrapment. Calva argues this count was created by the government merely to enhance his sentence.
Calva’s argument is misplaced. The informant’s statement to Calva established the elements of the crime itself.5 Therefore, Calva’s agreement to take the money represented by the government agent to be from illegal drug sales was a violation of the law. It was not merely an enhancement of his sentence. Calva’s argument of entrapment on this point, therefore, goes to his guilt or innocence, not to his sentence. Since Calva pleaded guilty to the money laundering count, specifically waiving an entrapment defense, he has forfeited the right to make this claim.
II.
For the foregoing reasons, the judgment of the district court is affirmed.