COLE, J., delivered the opinion of the court, in which KEITH, J., joined. GILMAN, J. (pp. 376-79), delivered a separate opinion concurring in the judgment.
OPINION
COLE, Circuit Judge.
This case is before us for the second time. In Craft v. United States, 140 F.3d 638 (6th Cir.1998) (hereinafter, “Craft I”), we held that' a federal tax lien against Plaintiff-Appellee Sandra L. Craft’s now-deceased husband, Don, did not attach to property held by the couple in a “tenancy by the entirety” under Michigan law. On remand, the district court found that Defendant-Appellant the United States of America (“IRS,” or “the government”) was nonetheless entitled to $6,693 with which Don had fraudulently enhanced the entire-ties property. Now, the IRS appeals the district court’s judgment on the basis that the Craft I panel misconstrued the law. Sandra responds that the IRS is precluded from raising this argument on appeal by the “law of the case” doctrine and other principles. Sandra also raises a number of claims in a cross-appeal. For the following reasons, we DISMISS the IRS’s effort to overturn Craft I as precluded by both the law of the case doctrine and the rule that one panel of this court may not overrule the prior decision of another panel. We AFFIRM the decision of the district court regarding Sandra’s claims.
I. BACKGROUND
The essential facts of the case are as follows.1 In May 1972, Sandra Craft and [362] her husband, Don, purchased real property (known as the “Berwyck Property,” for the road on which it was located) in Michigan as tenants by the entirety. Craft I, 140 F.3d at 639. Don failed to file federal income tax returns for tax years 1979 through 1986, and, in July 1988, the IRS assessed $482,446.73 against him in unpaid tax liabilities. Id. Don failed to pay his tax debts, and the IRS filed a notice of federal tax lien in March 1989 against all of Don’s property and rights to property. Id.; see also I.R.C. § 6321. Don was insolvent during the period from April 1980 through August 1989.
On August 28, 1989, Don and Sandra transferred the Berwyck Property to Sandra by way of a quitclaim deed, in exchange for one dollar. Craft I, 140 F.3d at 639. In June 1992, Sandra sold the property to a third party for $119,888.20. Id. at 640. Pursuant to an agreement between Sandra and the IRS, Sandra kept half of the proceeds ($59,944.10); the other half was placed in a non-interest-bearing escrow account, subject to the same right, title, and interest that the federal tax lien had on the property. Id. In April 1993, Sandra filed a complaint pursuant to 28 U.S.C. § 2410(a), seeking to quiet title to the proceeds in the escrow account. Id. In its answer, the government argued that it was entitled to half of the proceeds from Sandra’s sale of the property because its lien attached to Doris interest in the Ber-wyck Property, even though Don and Sandra had held the property as tenants by the entirety. Id. The government also claimed that Don had fraudulently conveyed his interest in the property to Sandra. Id.
Both parties moved for summary judgment in September 1993. The district court denied Sandra’s motion and granted the government’s motion in September 1994. See id. at 640. The district court held that at the time of the August 1989 conveyance, Don and Sandra’s entireties estate terminated and each spouse took an equal half interest in the estate. Id. Accordingly, the district court held that the federal tax lien attached to Doris interest at that time. Id. Upon Sandra’s motion, the court conducted further proceedings to determine the value of Don’s interest at the time of the termination of the tenancy by the entirety. See id. After a telephonic hearing, the court found in October 1996 that the value of Don’s property to which the IRS lien attached was $50,293.94.2 See id. at 641. The court then ordered that the IRS receive that amount from the escrowed proceeds. Id.
On cross-appeals to this court, the Craft I panel reversed the district court’s ruling, holding that “[bjecause Michigan law does not recognize one spouse’s separate interest in an entireties estate, a federal tax lien against one spouse cannot attach to property held by that spouse as an entire-ties estate.” 140 F.3d at 643. The panel also held that, under Michigan law, “Don did not possess a separate future interest in the Berwyck Property; therefore, the federal tax lien could not attach to a future interest that did not exist under Michigan law.” Id. at 644. After finding that Don had no present or future interest in the disputed property, the court remanded the case for determination of “whether a fraudulent conveyance occurred in this case.” Id. at 644. Judge Ryan concurred in the majority’s result, but argued that Don had a separate, future interest in the entireties property to which the tax lien might attach if the August 1989 transfer to Sandra were set aside as fraudulent. See id. at 649.
On remand, the district court conducted a bench trial. In written findings of fact and conclusions of law made in March 1999, the district court concluded that, al[363] though the transfer of the Berwyek. Property to Sandra by quitclaim deed did not constitute a typical fraudulent conveyance under Michigan law, the government was entitled to relief under an exception to that law, see McCaslin v. Schouten, 294 Mich. 180, 292 N.W. 696, 699 (1940). The court found that under the exception, a creditor may obtain relief “where the debtor, while insolvent, places non-exempt funds beyond the reach of his creditors by enhancing the entireties property.” See id. The court reasoned that from 1980 through 1985, while he was insolvent, Don and Sandra had used Don’s funds to enhance the property by making a total of $6,693 in mortgage payments (excluding interest) on its behalf. The court found that Don’s actions constituted a type of fraudulent conveyance under Michigan law, and that the government was entitled to recover the value of the mortgage payments ($6,693) plus interest (from the date of the court’s October 1995 judgment) from the es-crowed sales proceeds.3 Sandra filed a motion to amend the judgment, arguing that the court should reverse its award of interest on the $6,693 it awarded to the IRS. Sandra also moved the court to award her interest, pursuant to 28 U.S.C. § 2411, on the funds that the IRS would have to return to her.4 The court granted Sandra’s motion in part, deleting the interest awarded to the IRS, but denied her request for interest.
The government filed a timely notice of appeal and Sandra filed a timely notice of cross-appeal in June 1999. In October 1999, the government petitioned this court for en banc review of the Craft I decision. The government argued that the Craft I decision — as well Cole v. Cardoza, 441 F.2d 1337 (6th Cir.1971) (holding that federal government may not, under Michigan law, attach lien to entireties property to satisfy individual tax liability of one spouse), a prior decision upon which the Craft I court relied — conflicted with established, controlling precedent. This court rejected the petition in December 1999.
II. THE GOVERNMENT’S APPEAL
At this juncture, this case is not really about federal tax liens. Nor is it about state law property rights. This case is about the extent to which a prior decision of this court binds a subsequent panel when neither the facts, the parties, nor the law has changed. On appeal, the IRS reasserts its argument that a § 6321 federal tax lien against an individual taxpayer attaches to a tenancy by the entirety that the taxpayer shares, pursuant to Michigan law, with his spouse. This is, of course, the very argument we rejected in Craft I. For the reasons that follow, the government is precluded from re-arguing its case at this time.
A. Law of the Case
Under the law of the case doctrine, a court ought not reopen issues decided at an earlier point in the same litigation. See Agostini v. Felton, 521 U.S. 203, 236, 117 S.Ct. 1997, 138 L.Ed.2d 391 (1997). “Issues decided at an early stage of the litigation, either explicitly or by necessary inference from the disposition, constitute the law of the case.” Hanover Ins. Co. v. American Eng’g Co., 105 F.3d 306, 312 (6th Cir.1997) (citation and quotation marks omitted). Although the doctrine of law of the case is “not an inexorable command,” and courts must use “common sense” in applying it, see id., the power of this court to reach a result inconsistent with a prior decision reached in the same case is “to be exercised very sparingly, and only under extraordinary [364] conditions.” General Am. Life Ins. Co. v. Anderson, 156 F.2d 615, 619 (6th Cir. 1946) (citation and quotation marks omitted). We have delineated three such extraordinary conditions in which we will reconsider a prior ruling in the same case: “(1) where substantially different evidence is raised on subsequent trial; (2) where a subsequent contrary view of the law is decided by the controlling authority; or (3) where a decision is clearly erroneous and would work a manifest injustice.” Hanover Ins. Co., 105 F.3d at 312. For the reasons that follow, the IRS fails to articulate the “extraordinary conditions” necessary for us to rehear the claims we have already rejected.
1. Clearly Erroneous and Manifest Injustice
The IRS looks first to the third exception, arguing that this court can revisit the issues decided by the Craft I panel because that panel’s decision was clearly erroneous and would work a manifest injustice.5 The government’s argument is not persuasive because Craft I was not clearly erroneous.
The Craft I panel had before it circuit precedent that squarely addressed the issue before the court. In Cole, this court held that a federal tax lien against a taxpayer did not attach to property owned by the taxpayer and his wife in a tenancy by the entirety. See 441 F.2d at 1343. Neither this court nor the Supreme Court has ever expressly overruled Cole. Nonetheless, the IRS contends that Cole has been effectively overruled by Supreme Court decisions subsequent to it. But no Supreme Court case has directly addressed the question before both the Cole and Craft I courts.6 It is true that the Court has addressed the power of a federal tax lien to attach to state law property constructs other than a tenancy by the entirety, but the Court has done so only on narrow grounds. For instance, in United States v. National Bank of Commerce, 472 U.S. 713, 105 S.Ct. 2919, 86 L.Ed.2d 565 (1985), the Court held that the IRS had a right to levy upon a joint bank account for delinquent federal income taxes owed by only one of the owners of the account. See id. at 715, 724, 105 S.Ct. 2919. After discussing the specific characteristics of the taxpayer’s rights under state law and under his contract with the bank, see id. at 723-24,105 S.Ct. 2919, the Court was crystal clear about the specificity of its holding:
We stress the narrow nature of our holding. By finding that the right to withdraw funds from a joint bank account is a right to property subject to administrative levy under § 6331, we express no opinion concerning the federal characterization of other kinds of state-law created forms of joint ownership. This case concerns the right to levy only upon joint bank accounts.
Id. at 726 n. 10, 105 S.Ct. 2919.7 Likewise, in United States v. Rodgers, 461 U.S. 677, 103 S.Ct. 2132, 76 L.Ed.2d 236 (1983), the Court held that I.R.C. § 7403 permits a [365] district court to order the sale of a delinquent taxpayer’s home, despite the fact that his wife, with whom he owned the home pursuant to a state homestead law, did not owe any of the indebtedness. See id. at 680, 103 S.Ct. 2132. As the Craft I panel noted, however, the Rodgers Court “recognized that tenancies by the entirety posed a problem distinct from that of homestead estates, in that neither spouse owns an independent interest in an entire-ties property while both spouses own independent interests in a homestead estate.” 140 F.3d at 643 (citing Rodgers, 461 U.S. at 702-03 n. 31, 103 S.Ct. 2132). Thus, as the Craft I panel was presented with no binding precedent that overruled Cole, we cannot say that its decision was clearly erroneous.8
In finding that our decision in Craft I was not clearly erroneous, we acknowledge that there are colorable arguments on both sides of the question whether a federal tax lien against a taxpayer’s “property” or “rights to property,” see I.R.C. § 6321, attaches to a tenancy by the entirety. Indeed, Judge Ryan’s concurrence in Craft I illustrates this point, see 140 F.3d at 645-49 (Ryan, J., concurring) (arguing that, if transfer of property to Sandra Craft were to be set aside, federal tax lien would attach to Don Craft’s “future interest” in Berwyek property), as does Judge Gilman’s separate concurrence in the instant appeal. We further recognize that this court has held that federal law supersedes state property law in other circumstances. See, e.g., Bank One Ohio Trust Co., N.A. v. United States, 80 F.3d 173, 176 (6th Cir.1996) (finding that restraint on alienation created by state law does not prevent federal lien from attaching to spendthrift trust under § 6321); Liberty State Bank and Trust v. Grosslight (In re Grosslight), 757 F.2d 773, 775 (6th Cir.1985) (finding that property held as tenancy by the entirety is part of bankruptcy estate). But the fact that colorable arguments exist on both sides of a particular issue does not imply that the Craft I panel’s decision is “clearly erroneous.” There are colorable arguments in virtually every case we hear. To hold that their existence in the present case permits us to reopen an issue we have already settled in this very case would destroy the concept of finality in our courts, negate the predictability our legal system provides to people in the conduct of their affairs, and risk the unjust results that would surely follow were litigants to “panel-shop” and pursue, willy-nilly, two or more bites at the apple of settled law.
The Craft I panel was bound by circuit precedent that was directly on point in reaching the conclusion- it reached.9 It was faced with no Supreme Court precedent that directly held otherwise, and this court has reiterated the holding relied upon by the Craft I panel on more than one occasion. Further, other courts have reached results consistent with that reached by the Craft I panel. For these reasons, we reject the IRS’s argument that the decision reached by the Craft I panel was “clearly erroneous.”10
[366]*3662. Subsequent Contrary View of the Law
The IRS also argues that the law of the case doctrine does not apply here because the Supreme Court’s recent decision in Drye v. United States, 528 U.S. 49, 120 S.Ct. 474, 145 L.Ed.2d 466 (1999), decided after Craft I, states a view of the law that is contrary to that expressed in Craft I. See Hanover Ins. Co., 105 F.3d at 312. In Drye, the Court held that a taxpayer could not defeat a federal tax lien by disclaiming, pursuant to state law, his interest in his mother’s estate. 120 S.Ct. at 478. The IRS argues that Craft I conflicts with the Drye Court’s statements that: 1) federal law determines whether a right or interest created under state law constitutes “property” or “rights to property” for purposes of the federal tax lien statute, see Drye, 120 S.Ct. at 481; and 2) state law legal fictions do not bind the federal government for purposes of the federal tax lien statute, see Drye, 120 S.Ct. at 482. At oral argument, the IRS added that Drye stands for the “new” legal rule that a federal tax lien attaches to a taxpayer’s right to inherit property. Upon careful review, we find that Craft I is essentially consistent with the Drye Court’s reasoning.
a.
In Drye, the taxpayer (Drye) was insolvent, and the IRS had obtained valid tax liens against all of his “property and rights to property” pursuant to I.R.C. § 6321.11 Id. at 479. Drye’s mother died, and Drye was sole heir to her $233,000 estate. Id. at 478. Drye “disclaimed” all his interests in his mother’s estate pursuant to state law; as a result, the estate passed to Drye’s daughter. Id. at 479. Drye’s daughter established a spendthrift trust with the proceeds of her grandmother’s estate, naming as beneficiaries herself, Drye, and her mother. Id. Although applicable state law provided that the assets of a spendthrift trust were shielded from creditors seeking to satisfy debts of the trust’s beneficiaries, see id., the Court held that Drye’s disclaimer did not defeat the government’s tax liens. Id. at 478. The Court summarized the relationship between § 6321 and state law as follows:
The Internal Revenue Code’s prescriptions are most sensibly read to look to state law for delineation of the taxpayer’s rights or interests, but to leave to federal law the determination whether those rights or interests constitute “property” or “rights to property” within the meaning of § 6321. “[Ojnce it has been determined that state law creates sufficient interests in the [taxpayer] to satisfy the requirements of [the federal tax lien provision], state law is inoperative to prevent the attachment of liens created by federal statutes in favor of the United States.”
Id. at 478 (quoting United States v. Bess, 357 U.S. 51, 56-57, 78 S.Ct. 1054, 2 L.Ed.2d 1135 (1958) (brackets in original)). Under the approach taken in Drye, “We look initially to state law to determine what rights the taxpayer has in the property the Government seeks to reach, then to federal law to determine whether the taxpayer’s state-delineated rights qualify as ‘property’ or ‘rights to property’ within the compass of federal tax lien legislation.” Id. at 481.
The IRS argues that the Craft I panel failed to apply this rule and relied instead on Michigan law to determine whether a taxpayer’s involvement in a tenancy by the entirety constitutes property for the purposes of § 6321. We are not persuaded. First, we note that the Su[367] preme Court had stated prior to Drye the rule that a court must look to federal law to determine whether something constitutes “property” or “rights to property” for purposes of § 6321. See, e.g., United States v. Irvine, 511 U.S. 224, 238, 114 S.Ct. 1473, 128 L.Ed.2d 168 (1994) (noting the “general and longstanding rule in federal tax cases that although state law creates legal interests and rights in property, federal law determines whether and to what extent those interests will be taxed”); National Bank of Commerce, 472 U.S. at 727, 105 S.Ct. 2919 (stating that, “[t]he question whether a state-law right constitutes ‘property’ or ‘rights to property’ is a matter of federal law” for purposes of federal tax collection).12 The Craft I court was aware of that rule, see 140 F.3d at 641, and, more important, applied it properly.13
The Craft I court’s analysis is consistent with the two-step analysis described in Drye. See 120 S.Ct. at 481. The Craft I court first looked to Michigan law and found that: 1) Michigan law holds that an individual spouse possesses no separate interest in entireties property, Craft I, 140 F.3d at 643, and 2) Michigan law holds that an individual spouse possesses no future interest in entireties property, see id. at 644.14 Thus, under Michigan law, Don had no individual interest in the entireties property; and, because state law delineated no individual interest or right held by Don, there was nothing for federal tax law to deem to be “property” or “rights to property” for purposes of I.R.C. § 6321. Accordingly, Craft I is fundamentally consistent with Drye. See Rodgers, 461 U.S. at 702-03 n. 31, 103 S.Ct. 2132 (stating that [368] cases which have found that a federal tax lien does not attach to a tenancy by the entirety “because neither spouse possessed an independent interest in the property ... do no more than illustrate the proposition that, in the tax enforcement context, federal law governs the consequences that attach to property interests, but state law governs whether any property interests exist in the first place.”) (citing United States v. American Nat’l Bank of Jacksonville, 255 F.2d 504, 506 (5th Cir.1958); United States v. Hutcherson, 188 F.2d 326, 331 (8th Cir.1951)); see also 14 Mertens Law of Fed. Income Tax’n § 54A:13 (Supp. 2000) (citing Craft I for proposition that, although federal law determines whether a lien will attach to property interests held by delinquent taxpayer, “whether and to what extent a taxpayer has ‘property’ or ‘rights to property’ are [sic] determined under the applicable state law.” (footnote omitted)).
b.
The IRS also argues Craft I is inconsistent with the Drye Court’s refusal to subjugate federal tax law to state law legal fictions. See Drye, 120 S.Ct. at 482 (stating that “federal tax law ‘is not struck blind by a disclaimer’ ” (quoting Irvine, 511 U.S. at 240, 114 S.Ct. 1473)). But this proposition, too, had been established prior to Craft I, and the Craft I court was well aware of it. See Craft I, 140 F.3d at 643 (discussing Irvine, 511 U.S. at 240). Indeed, the Craft I court rejected the IRS’s argument that it was being duped by a state law legal fiction. See id. We again reject the IRS’s argument and find that the aspect of Drye reiterating the admonition regarding state law fictions is not a subsequent contrary view of the law. See Hanover Ins. Co., 105 F.3d at 312; Craft I, 140 F.3d at 643.
c.
We are not at all persuaded by the IRS’s last-minute characterization of Drye as standing for the proposition that a right to inherit property is subject to a federal tax lien. Because Don Craft had a conditional right to take the Berwyek property by survivorship pursuant to Michigan law (ie., should Susan predecease him), the argument goes, see Craft I, 140 F.3d at 642 (citing Leroy Lane I, 910 F.2d at 347), he comes under this purportedly “new” rule. This rendering of Drye is patently overbroad. If the Supreme Court intended to hold that every conceivable interest in property, no matter how remote, is subject to a federal tax lien, we have little doubt that it would have said so outright. We do not think it so held. Indeed, the Drye Court specifically stated (demonstrating that “analogy is somewhat hazardous in this area,” see Rodgers, 461 U.S. at 685-86, 103 S.Ct. 2132) that a mere expectancy is not sufficient to constitute “property” or “rights to property” pursuant to § 6321: “Nor do we mean to suggest that an expectancy that has pecuniary value and is transferable under state law would fall within § 6321 prior to the time it ripens into a present estate.”15 120 S.Ct. at 482-83 n. 7; see also United States v. Murray, 217 F.3d 59, 63 (1st Cir.2000) (stating that, pursuant to Drye, § 6321 is to be construed broadly, “but there are limits that reflect both common usage and policy. For example, the lien would likely not attach to land owned by a still-living relative of [the taxpayer], or to [his] expected inheritance of it, even if the relative had provided in his will that the land would go to [the taxpayer] on the relative’s death.”).16 Thus, we reject the government’s argument that Drye stands for the proposition that a federal tax lien [369] attaches to any right to inherit property, no matter how remote.17
d.
In sum, Drye has not so fundamentally changed the legal landscape as to overrule Craft I. See Blacky v. Butcher, 221 F.3d 896, 907 (6th Cir.2000) (Gilman, J.) (post-Drye decision distinguishing holding of Craft I from question of how to treat en-tireties property in bankruptcy case); United States v. Green, 201 F.3d 251, 253 (3d Cir.2000) (citing Drye, 120 S.Ct. at 478, and indicating that federal tax lien does not attach to property held as tenancy by entirety pursuant to Pennsylvania law); see also Edward Kessel and Steven R. Klammer, Supreme Court Finds Disclaimer Ineffective to Avoid Federal Tax Lien, 92 J. Tax’n 118, 122 (2000) (discussing impact of Drye and suggesting that, even after decision, federal tax lien law may not apply to dower, curtesy, or elective share rights). Accordingly, the IRS’s argument on appeal is precluded by the law of the case doctrine.
B. Law of the Circuit
Our decisions in Craft I and in Cole are also law of the circuit. As we recently stated, “One panel of this court may not overturn the decision of another panel of this court — that may only be accomplished through an en banc consideration of the argument.” Pollard v. E.I. DuPont de Nemours Co., 213 F.3d 933, 945 (6th Cir. 2000). As discussed, supra, Craft I is not cleariy erroneous, and it has not been called into doubt by any decision of the Supreme Court.18 Because this panel may not conduct a plenary review of the result reached by a prior panel, the decision reached by the Craft I must stand.19
III. SANDRA’S CROSS-APPEAL
In her cross-appeal, Sandra first argues that the IRS was precluded from arguing on remand the fraudulent enhancement theory upon which it ultimately won relief. Next, Sandra argues that the governing statute of limitations barred the IRS’s recovery under its fraudulent enhancement theory. Third, she claims that the IRS’s remedy became moot upon Don’s death. Finally, Sandra asserts that the IRS owes her interest on the funds to which she became entitled pursuant to our opinion in Craft I. Sandra has also submitted to this court a motion for costs under both Fed. R.App. P. 38 and the Equal Access to Justice Act, 28 U.S.C. § 2412. For the reasons that follow, we AFFIRM the judgment of the district court and DENY Sandra’s motion for costs.
A.
Upon remand, the IRS argued two theories of recovery before the district court: first, that the August 1989 transfer from Don and Sandra to Sandra was a fraudulent conveyance pursuant to Michigan law, see Mich. Comp. Laws §§ 566.11-23; and second, in the alternative, that Don’s pay[370] ment of mortgage and property tax obligations 20 from 1979 to 1985 on behalf of the entireties property constituted a voidable, fraudulent enhancement of the property. Sandra objected to the fraudulent enhancement theory (she contends that she did do early and often, see infra) on the grounds that the IRS had not raised the theory until immediately prior to trial, and that the theory went beyond the scope of this court’s remand. The district court rejected Sandra’s objection, and found that although the IRS had not raised specifically the fraudulent enhancement issue in its answer to Sandra’s complaint,21 the issue was tried by the implied consent of the parties, pursuant to Fed.R.Civ.P. 15(b).
In her cross-appeal, Sandra argues that the district court erred by permitting the IRS to argue on remand its new theory of fraudulent enhancement. First, Sandra asserts that the fraudulent enhancement issue went beyond the scope of this court’s remand. Second, Sandra claims that she did not consent to trial of the new theory, but rather “objected repeatedly, vehemently and at every possible opportunity to the IRS raising a new issue for the first time on remand.” Appellee’s Br. at 16. For the reasons that follow, Sandra’s arguments fail.
1. Scope of Remand
Sandra contends that the only issue before the district court on remand was whether she and Don fraudulently transferred the property to Sandra when they executed the August 28, 1989 quitclaim deed. See Craft I, 140 F.3d at 644. The IRS claims that this court left open the broader question of whether any fraudulent conveyance occurred with regard to the Berwyck Property. The Craft I court stated as follows:
[T]here remains an issue of whether a fraudulent conveyance occurred in this case, an issue that the district court did not address. Under Michigan law, one spouse cannot use the doctrine of tenancy by the entirety to defeat the rights of a judgment creditor. Such a fraudulent transfer can be set aside.... The issue of whether a fraudulent conveyance occurred in this case is a matter that should be determined by the district court. If the conveyance was fraudulent and therefore set aside, the IRS could be entitled to half the proceeds of the June 1992 sale, or $59,944.10. Accordingly, upon remand, the district court should consider whether the Berwyck Property was transferred for fraudulent purposes.
Id. (citations omitted).
The district court did not exceed the scope of our remand by considering the issue of whether Don’s mortgage payments constituted a fraudulent transfer under Michigan law. The last sentence of the above-quoted section of Craft I, which directed the district court to “consider whether the Berwyck Property was transferred for fraudulent purposes,” does not raise exclusively the question of whether the August 1989 transfer itself was fraudulent; rather, it permitted the district court to consider also whether Don and Sandra transferred the property for other fraudulent purposes as well. See id. This conclusion is consistent with the opening sentence of the Craft I court’s fraudulent conveyance discussion, which states in broad terms that “there remains an issue of whether a fraudulent conveyance occurred in this case.” See id. It is also consistent with this court’s broad statement that, “[t]he issue of whether a fraudulent conveyance occurred in this case is a matter that should be determined by the district court.” See id. As we read this language, Craft I directed the district court to investigate whether the facts of [371] this ease constituted a fraudulent conveyv ance under Michigan law. This is exactly what the district court did. It found that under Michigan law, the August 1989 transfer could not be fraudulent, because Michigan courts have “consistently held that creditors have no right to complain of a debtor’s disposition of exempt [ie., en-tireties] property because such property could not be reached to satisfy debts had it remained in the debtor’s hands.” See, e.g., Cross v. Commons, 336 Mich. 665, 59 N.W.2d 41, 43 (1953) (en banc). The court went on, however, to find that Don’s mortgage payments were fraudulent under an exception to that rule. See McCaslin, 292 N.W. at 699. The court’s consideration and application of Michigan fraudulent conveyance law was in harmony with the scope of the Craft I court’s remand, and we reject Sandra’s contention otherwise.
2. Implied Consent
Sandra also argues that the district court erred in permitting the IRS to argue its fraudulent enhancement theory upon remand because she did not consent to trial of the issue. The district court found that Sandra had impliedly consented to trial of the fraudulent enhancement theory by failing to object to the IRS’s claim until after the trial; by consenting to the Joint Final Pretrial Order, which indicated that the enhancement claim was a controverted issue for trial; and by failing to object at trial to the government’s evidence that Don made payments on behalf of the en-tireties property from 1979 to 1985, which “could have been relevant only to the Government’s contention that Don’s payments into the entireties property from 1979 through 1985 while he was insolvent were fraudulent.” Sandra asserts that she objected to the fraudulent enhancement theory at the final pretrial conference, “an event for which there is unfortunately no recorded transcript,” Appellee’s Br. at 18, and in her post-trial brief. Sandra also alleges that the fact that the Joint Final Pretrial Order lists among the “Controverted and Unresolved Issues for Trial” the issue of whether Don made fraudulent conveyances into the tenancy by the entirety at a time when he was insolvent actually shows that she objected to the issue prior to trial. Sandra further argues that she did not object to the enhancement theory at trial because the judge had indicated that the trial would be “relaxed,” and that he had ordered the parties to submit their legal arguments as part of their post-trial briefs rather than present them at trial. Lastly, Sandra argues that the evidence that the government put on at trial did not necessarily go to the enhancement issue; thus, her failure to object to it did not imply her consent to try the issue.
“Fed. R. Civ. Pro. [sic] 15(b) states that issues tried by the express or implied consent of the parties shall be treated in all respects as if they had been raised in the pleadings.” Carlyle v. United States, 674 F.2d 554, 556 (6th Cir.1982); see also Fed.R.Civ.P. 15(b). Although the parties agree that this court reviews for clear error the district court’s finding that the IRS was not precluded from raising the fraudulent enhancement issue, we think the better view is that we review for abuse of discretion the district court’s decision regarding whether an issue not raised in the pleadings has been tried by thé implied consent of the parties. See Moncrief v. Williston Basin Interstate Pipeline Co., 174 F.3d 1150, 1160 (10th Cir.1999); 6A Charles Alan Wright, Arthur R. Miller & Mary Kay Kane, Federal Practice and Procedure § 1493, at 41 (2d ed.1990).
The district court did not abuse its discretion in finding that Sandra impliedly consented to trial of the fraudulent enhancement theory. First, because the theory of fraudulent enhancement constitutes a well-established exception to Michigan fraudulent conveyance law, see supra, Sandra was on notice from the time of the government’s answer to her complaint that fraudulent enhancement could be at issue in the case. Further, as the government [372] points out, although Sandra agreed that whether the government should prevail on the enhancement theory was a controverted issue for trial, she did not move to include the question of whether the government could argue the theory as a controverted issue in the Joint Final Pretrial Order. Finally, although the trial on remand was, in the words of the court, “more casual than a trial sometimes looks” — the trial took place with the parties, witnesses, and the judge sitting around a table in the courtroom — the court admonished the parties that “it’s still a federal court, and all the rules apply.” See Carlyle, 674 F.2d at 556 (finding that where defendant raised defense for first time at trial, and then offered evidence of the defense, defense was argued by implied consent of the plaintiff for purposes of Rule 15(b)). Cf. Yellow Freight Sys., Inc. v. Martin, 954 F.2d 353, 358 (6th Cir.1992).
Regardless of whether Sandra objected in a timely fashion to the government’s theory, her argument fails because she cannot show that she has been prejudiced by the district court’s decision to permit the IRS to argue the enhancement theory. Under Rule 15(b), “a district court may consider claims outside of those raised in the pleadings so long as doing so does not cause prejudice.” Cruz v. Coach Stores, Inc., 202 F.3d 560, 569 (2d Cir. 2000); see also 6A Wright et al., § 1493, at 36-40 (“Prejudice in this context means a lack of opportunity to prepare to meet the unpleaded issue.”). Sandra cannot show that she suffered prejudice simply because the IRS changed its legal theory. See Cruz, 202 F.3d at 569. “Instead, a party’s failure to plead an issue it later presented must have disadvantaged its opponent in presenting its case.” Id. (quotation marks and citation omitted). Sandra knew of the government’s theory prior to trial because the government had argued it in its pretrial brief. Further, she argued the issue in her post-trial brief, which the district court considered. She was not prohibited from cross-examining the government’s witnesses on the issue if she so chose, and she does not argue that she needed to discover additional evidence to defend against the fraudulent enhancement theory. Thus, the government’s argument did not prejudice Sandra, and the issue was tried by her implied consent.
B.
Sandra next argues that the district court erred by failing to find that the government’s fraudulent enhancement claim was not barred by the statute of limitations contained in I.R.C. § 6502. Sandra asserts no case law in her favor, and her claim has no merit.
We review de novo a district court’s determination that a complaint was filed outside the relevant statute of limitations. See Tolbert v. State of Ohio Dep’t of Transp., 172 F.3d 934, 938 (6th Cir.1999). The parties agree that the IRS assessed Don’s federal tax liabilities in July 1988. At that time, § 6502 contained a six-year limitations period within which the IRS could begin collection proceedings on a tax assessment. See I.R.C. § 6502(a)(1) (1989). The statute provided that the limitations period begins to run on the date of the assessment of the tax. See id. Thus, under the statute in effect at the time, the IRS had until July 1994 to begin collection proceedings against Don. However, Congress amended the statute in 1990 to increase the § 6502 limitations period to ten years. See I.R.C. § 6502 (Historical and Statutory Notes). The amendment applied the new ten-year period to taxes already assessed for which the six-year limitations period had not expired. See id. Because Don’s tax debts had already been assessed and the six-year limitations period had not run on the IRS’s claim, the ten-year limitations period applied to Don’s tax debts. Accordingly, the IRS had until July 1998 to begin collection proceedings against Don.
[373] The government filed its answer to Sandra’s complaint in July 1993. Because the government’s fraudulent enhancement claim was tried by implied consent, see supra, its claim must be “treated in all respects as if [it] had been raised in the pleadings.” See Fed.R.Civ.P. 15(b). The claim is thus deemed filed on the date that the IRS filed its answer in July 1993, well within the ten-year limitations period that began running in July 1988. See id,.; Fed.R.Civ.P. 15(c).
C.
Sandra argues that Don’s death in August 1998 makes moot the IRS’s remedy in this case. She claims that the government stipulated at an early point in the case that its lien attached to proceeds of the sale of the Berwyck Property to the same extent that the lien attached to the property itself;22 once this court found that the tax lien did not attach to the property, see Craft I, 140 F.3d at 643-44, the lien attached to nothing and the IRS had nothing to enforce. In the alternative, Sandra asserts that the Craft I holding requires that the government’s lien against the property was unenforceable until either Don and Sandra died, or* until the couple divorced. See Leroy Lane II, 972 F.2d at 138. Under Sandra’s theory, the proceeds of the sale of the entireties property revert to Sandra upon Don’s death, and the IRS cannot reach them. These theories fail.
We review questions of mootness de novo. See Comer v. Cisneros, 37 F.3d 775, 787 (2d Cir.1994). By operation of law, the IRS’s lien attached to all of Don’s property and rights to property. See I.R.C. § 6321. Although this court found that Don had no individual interest — present or future — in the entireties property, see Craft I, 140 F.3d at 643-44, the’ IRS did not gain recovery upon a theory that Don had an individual interest in the en-tireties property. Rather, the district court found that the IRS could recover the value of mortgage payments Don made on behalf of the entireties property under a fraudulent enhancement theory. In other words, Don essentially hid funds to which the IRS was entitled (by virtue of its lien) by investing them in a property to which the lien could not attach. See McCaslin, 292 N.W. at 699; accord Hoemer v. Elkins (In re Elkins), 94 B.R. 932, 934-35 (Bankr. W.D.Mich.1988). Thus, Sandra’s arguments, which presume that the district court awarded the IRS proceeds of the sale of the property on the basis that Don had some kind of individual interest in the Berwyck Property, are misplaced. Rather, the court awarded the IRS’s remedy on the basis that Don used his own funds to enhance the property in order to avoid paying his tax debts.
D.
On October 26, 1995, the district court ordered that the government receive $50,293.94 of the escrowed proceeds from the sale of the Berwyck Property. Subsequent to this court’s remand, the district court determined that the government was entitled to only $6,693 from the escrowed sales proceeds. Sandra argues that, pursuant to 28 U.S.C. § 2411, she is entitled to interest on the $43,600.94 (i.e., $50,293.94 less $6,693) that the government has possessed since October 1995.
Section 2411 provides as follows:
In any judgment of any court rendered (whether against the United States, a collector or deputy collector of internal revenue, a former collector or deputy collector, or the personal representative in case of death) for any overpayment in respect of any internal-revenue tax, interest shall be allowed at the overpay[374] ment rate established under section 6621 of the Internal Revenue Code of 1986 upon the amount of the overpayment, from the date of the payment or collection thereof to a date preceding the date of the refund check by not more than thirty days, such date to be determined by the Commissioner of Internal Revenue.
28 U.S.C. § 2411. Citing Spawn v. Western Bank-Westheimer, 989 F.2d 830, 834 (5th Cir.1993), the district court denied Sandra’s motion for an award of interest on the basis that “[§ 2411] applies only to tax refund cases.” The court reasoned that the statute’s use of the terms “overpayment” and “payment” indicates that it was intended to apply only in cases where the taxpayer has paid a disputed tax liability and then seeks a refund. Because Sandra brought the instant case as an action to quiet title rather than as a tax refund case, and because the government obtained Sandra’s funds pursuant to a court judgment rather than by virtue of an overpayment or payment of tax obligations, the court rejected Sandra’s request for interest payments. We review de novo the district court’s interpretation of § 2411. See State of Mich. v. United States, 141 F.3d 662, 664 (6th Cir.1998).
Sandra asserts that § 2411 applies to her case because the funds she will recover constitute an overpayment, and because she will recover them pursuant to a court judgment. The IRS responds that a plaintiff may not collect interest against the federal government unless it has specifically waived its sovereign immunity, and § 2411 contains no such waiver for suits to quiet title. In addition, the IRS argues that the funds Sandra will receive are not an “overpayment” of taxes. See 28 U.S.C. § 2411.
A plaintiff may not recover interest from the federal government in the absence of an express waiver of its sovereign immunity from suit. See Library of Congress v. Shaw, 478 U.S. 310, 314, 106 S.Ct. 2957, 92 L.Ed.2d 250 (1986). In determining whether Congress has expressly waived the government’s immunity, a court must “construe waivers strictly in favor of the sovereign, and not enlarge the waiver beyond what the language requires.” Id. at 318, 106 S.Ct. 2957 (citations and quotation marks omitted). As the Shaw Court noted, Congress has expressly authorized interest claims against the government in the circumstances described by § 2411. See id. at 318-19 n. 6, 106 S.Ct. 2957. Because § 2411 authorizes payment of interest based upon “any judgment of any court rendered ... for any overpayment in respect of any internal-revenue tax,” the question in this case becomes whether the escrowed $43,600.94 held by the IRS constitutes an “overpayment” with respect to an internal-revenue tax. See 28 U.S.C. § 2411.
As did the district court, the government relies on Spawn to suggest that an “overpayment” refers only to tax refunds. See 989 F.2d 830. The Spawn court stated that § 2411 “expressly authorizes awards of prejudgment and postjudgment interest against the United States in tax refund cases.” Id. at 834. But the court made this statement only in passing — Spawn was not a tax case — and lifted it directly from the Supreme Court’s description of § 2411 in Shaw. See id. (citing Shaw, 478 U.S. at 318-19 n. 6, 106 S.Ct. 2957). In Shaw, the Supreme Court simply cited § 2411 as one of several examples of Congress expressly waiving the government’s immunity with respect to interest awards, describing § 2411 in a parenthetical as “expressly authorizing prejudgment and postjudgment interest payable by the United States in tax-refund cases.” Shaw, 478 U.S. at 318-19 n. 6, 106 S.Ct. 2957. This parenthetical description of a statute, contained in a footnote within dicta, is not dispositive of the meaning of § 2411.
The language of § 2411 is broad. Cf. Jones v. Liberty Glass Co., 332 U.S. 524, 531, 68 S.Ct. 229, 92 L.Ed. 142 (1948). Sandra, however, has not met her burden of proof on the interest claim. The only [375] case she cites in support of her theory is Steiner v. Nelson, 199 F.Supp. 441 (E.D.Wis.1961), aff'd, 309 F.2d 19 (7th Cir. 1962). In Steiner, the court held that even where the IRS obtains funds from a taxpayer based on an illegal tax assessment, the taxpayer is not entitled to interest under § 2411. See 199 F.Supp. at 441-42. Thus, as the government notes, Steiner actually lends support to its position. Although we are not bound by the reasoning or result of the Steiner court, we hold that, on the facts of this case, Sandra has failed to carry her burden of proving her case pursuant to § 2411.
E.
In June of this year, Sandra filed a motion with this court to recover litigation costs pursuant to either the Equal Access to Justice Act, 28 U.S.C. § 2412, or under Fed. R.App. P. 38. Thé panel deferred ruling on the motion until oral argument. In the motion, Sandra argues that the government’s appeal simply asserts the same issue, arguments, and case law rejected by the Craft I panel. Because the government is bound by the law of the case doctrine, Sandra claims its appeal is brought in bad faith. The government responds that Sandra should be denied costs because it was substantially justified in bringing its appeal, see I.R.C. § 7430, and because its appeal is not frivolous, as required by Rule 38.
Fed. R.App. P. 38. That rule proyides: If a court of appeals determines that an appeal is frivolous, it may after a separately filed motion or notice from the court and reasonable opportunity to respond, award just damages and single or double costs to the appellee,
In Martin v. CIR, this court warned litigants of our “ample authority” to assess double costs and “just damages” against an appellant in a frivolous appeal: “In future such cases this court will not hesitate to award damages when the appeal is frivolous, or taken merely for purposes of delay, involving an issue or issues already clearly resolved.” - 766 F.2d 38,, 41 (6th Cir.1985) (quotation marks omitted); accord Sisemore v. United States, 797 F.2d 268, 271 (6th Cir.1986); Wilton Corp. v. Ashland Castings Corp., 188 F.3d 670, 676 (6th Cir.1999). Recently, this court concluded that even though an appeal is not made in “bad faith,” an appellee may garner costs if an appeal is “wholly without merit.” Wilton Corp., 188 F.3d at 677. Although the IRS’s appeal is precluded by both the law of the case and law of the circuit doctrines, we have acknowledged that the government raised colorable — if not persuasive — arguments in its appeal, see supra. Accordingly, we deny Sandra’s motion for costs pursuant to Rule 38.
We also deny Sandra’s motion for costs pursuant to § 2412. Sandra has failed to articulate why she merits costs pursuant to that statute. Rather, she simply reasserts her argument that the government’s appeal is precluded at this time. Further, certain monetary awards in tax cases may be awarded only pursuant to I.R.C. § 7430. See 28 U.S.C. § 2412(e); see also Sisemore, 797 F.2d at 271. The provisions of § 7430 are “not automatic,” and “are limited by a whole host of conditions and requirements.” Beaty v. United States, 937 F.2d 288, 292 (6th Cir.1991). Sandra has articulated none of these conditions or requirements, ánd, indeed, has failed even to discuss whether § 7430 applies to her case. Accordingly, we reject her motion for costs.23
IY. CONCLUSION
For the reasons discussed above, we DISMISS the government’s appeal as precluded by both the law of the case and law of the .circuit, doctrines. We further AFFIRM' the district court’s judgment, and [376] DENY Sandra’s motion for litigation costs brought pursuant to Rule 38 and 28 U.S.C. § 2412.