ROBERTS, Circuit Judge.
Elizabeth Mellen defrauded the United States government of electronic goods worth hundreds of thousands of dollars, giving most of them to her relatives. Elizabeth’s husband Luther took part in the criminal activity to the extent of joining with Elizabeth to procure a stolen laptop for his son from a previous marriage, and using some of the stolen goods around the home he shared with Elizabeth. He otherwise appears to have stayed out of the broader conspiracy. Luther was convicted of conspiracy and receipt of stolen property. At sentencing,, the district court found him responsible for all the goods that flowed through the couple’s home — even the goods he had neither participated in procuring nor used, but which Elizabeth passed along to her relatives. Because the government adduced sufficient evidence at [178]*178trial to show that Luther agreed to participate in the conspiracy to some extent, we affirm.his convictions. We vacate the sentence, however, because the record contains no indication that Luther agreed to participate to the extent of all the goods his wife brought into their home.
I.
This is the fifth appeal stemming from a series of convictions in a conspiracy to defraud the United States Department of Education (DOE). See United States v. Hayes, 369 F.3d 564 (D.C.Cir.2004); United States v. Elizabeth Mellen, 89 Fed.Appx. 268 (D.C.Cir.2004) (unpublished opinion); United States v. Morgan, No. 03-3061 (D.C.Cir. appeal filed May 22, 2003); United States v. Burroughs, No. 03-3093 (D.C.Cir. appeal filed Aug. 5, 2003). Elizabeth Mellen, the central character in this story, worked as a telecommunications specialist at DOE and was responsible for installation and maintenance of telephone services throughout the Department. In that capacity, she was authorized to place orders under service contracts DOE had with two companies, Bell Atlantic and Lucent.
At some point, Elizabeth began to use her government position to acquire goods and services for herself and her extended family, paid for by the taxpayers. Elizabeth would ask Robert Sweeney, a Bell Atlantic employee with responsibility for the DOE account, to order electronic goods for her under the Bell Atlantic contract. Sweeney would obtain the goods and deliver them to locations specified by Elizabeth. Many, of these goods were initially delivered to Elizabeth’s home in Me-chanicsville, Maryland, though most of them ultimately wound up elsewhere in the hands of various members of her extended family.
Over the course of the conspiracy, Elizabeth ordered and Robert Sweeney delivered a wide array of items, including more than 100 cordless telephones, numerous two-way “talkabout” radios, multiple state-of-the-art computers, and even a 61-inch television set. In total, Elizabeth obtained more than $360,000 worth of equipment, all paid for by DOE. At her behest, Sweeney and Lucent employee William Cousins also performed various services for Elizabeth and her relatives, ranging from complex cable and wiring installations to lawn-mowing and other yard work.
Throughout this period, appellant Luther Mellen — also known as “Butch” — was married to Elizabeth. Luther and Elizabeth shared the home in Mechanicsville.' In 1997, Luther’s son from a previous marriage, Daniel Mellen, graduated from high school in North Carolina. Luther attended the graduation and gave his son a Dell laptop computer as a graduation present. The computer was later shown to have been paid for by DOE. Luther told his son that it had been picked out by Elizabeth and asked him to write her a thank you note. The computer came with a power cord, and Daniel would testify that the power cord broke “two to five times” and that each time his father obtained a replacement cord for him. Trial Tr., Nov. 4, 2002 (A.M.), at 52-53. The power cords were also shown to have been paid for by DOE.
The government finally caught on to Elizabeth’s criminal activities when one of her co-workers contacted DOE’s Office of Inspector General in August 1999. In December of that year, special agents executed several search warrants, including one for the Mellens’ Mechanicsville home. There, the agents found almost $65,000 in property paid for by DOE. Most of the property was located in the basement — ■ much of it still in unopened boxes — but [179]*179agents also, found items in other areas of the house. For instance, agents found a VCR in a closet containing men’s clothing, a speaker phone in the master bedroom, and a number of items in a den adjoining the bedroom. See Trial Tr., Oct. 28, 2002 (A.M.), at 101-08; Trial Tr., Oct. 28, 2002 (P.M.), at 39.
A grand jury indicted Elizabeth and members of her extended family for conspiracy to defraud the United States, in violation of 18 U.S.C. § 371, and various other crimes. The indictment named Luther as one of the conspirators and also charged him with receipt of stolen government property, in violation of 18 U.S.C. § 641. At trial the government presented detailed evidence on how the stolen goods made their way to the Mellens’ home. Robert Sweeney testified that on some occasions he would bring items to Elizabeth’s office or would meet her as she was coming out of work. Elizabeth would take the goods home with her, frequently driving home with her husband. Sweeney acknowledged, however, that Elizabeth instructed him to conceal the goods in a bag “so Butch couldn’t see them.” Trial Tr., Oct. 29, 2002 (A.M.), at 73. On other occasions, Sweeney placed goods in the trunk of a car that belonged to one of Elizabeth’s sisters, who also worked at DOE. Again, Sweeney testified' that he did this “so that Mr. Mellen wouldn’t know [the goods] were there.” Id. at 89.
Sweeney also testified that on occasion he would deliver larger items directly to the Mellens’ house. Sweeney had a key to the house and would drop off the goods when no-one was home. On one trip, Sweeney and a DOE employee unpacked a large Gateway computer and placed the monitor in a visible location in one of the upstairs rooms. On other trips, Sweeney left packaged computers, phones, and printers inside the Mellens’ front door. Sweeney testified that he tried to arrange the goods “so Butch would not- be able to see them,” but that he was unable to conceal the goods completely. Id. at 58. On yet other trips, Sweeney placed boxes of goods in the basement or beneath a tarpaulin on the Mellens’ deck.
A number of Elizabeth’s family members implicated in the crimes also testified at trial. These witnesses attested to various aspects of Luther and Elizabeth’s marital relationship — such as that Luther and his wife drove to work together and that she cooked for him — and one witness noted that Luther was present at a family outing whére Elizabeth handed out “talka-bout” radios. See Trial Tr., Oct. 31, 2002 (A.M.), at 76-77. Some of the witnesses, however, also testified to their belief that Luther was not involved in the conspiracy. See Trial Tr., Oct. 24, 2002 (A.M.), at 135 (testimony of Ray Morgan, Jr.) (“probably ... Butch Mellen didn’t have anything to do with this”); Trial Tr., Oct. 23, 2002, at 25- (testimony of special agent George Blissman) (indicating that co-defendant Jeffrey Morgan told agents that Luther “probably had no knowledge of what Eliz was [d]oing”).
Luther’s son Daniel testified about his father’s delivery of the laptop computer and the replacement power cords. Daniel also indicated that, after the investigation of the Mellens had begun, his father advised him not to “be around” the computer. Trial Tr., Nov. 4, 2002 (A.M.), at 65. The DOE employee who had tipped off the Department about Elizabeth’s activities also testified that, prior to reporting Elizabeth’s activities, she had overheard several conversations between Elizabeth and Luther on the subject of acquiring a two-way radio for a boat they owned.
Finally, the government introduced evidence tending to show Luther’s ability to comprehend what his wife was doing. One [180]*180witness explained that, as part of his job with the Environmental Protection Agency (EPA), Luther was authorized to make government purchases and had received training in the procedures governing such purchases. The government also showed that the Mellens shared a joint checking-account and that between 1997 and 1999 Luther had signed approximately 90 percent of the checks issued from the account — suggesting that Luther was in charge of the couple’s finances.
In his defense, Luther introduced his EPA time, attendance, and travel records from 1997 to 1999, but did not testify. The jury found him guilty on both counts. The conspiracy verdict did not specify the amount of loss attributable to Luther, while the receipt of stolen property verdict indicated only that Luther had received government property “having a value of more than $1,000.” Verdict at 2.
The district court sentenced Luther pursuant to the Federal Guidelines, under which the amount of loss affects a defendant’s sentence. See U.S.S.G. § 2Bl.l(b)(l) (2000).1 At the sentencing hearing, the government asked that Luther be held responsible for $364,291.30— an amount equal to the value of all the goods stolen by his wife. Luther asked the court to limit his responsibility to the laptop computer and power cords that he had delivered to his son. The court held Luther responsible for $225,582.63 — the value of all the stolen property that had entered the Mellens’ home at some point during the conspiracy. The court reasoned that Luther “knew that the property was there. He knew of his wife’s involvement.” Sentencing Hr’g Tr. at 18. The court also granted an upward adjustment for “more than minimal planning” pursuant to Section 2Bl.l(b)(4)(A) of the Guidelines, and denied Luther’s requests for a downward departure and a mitigating role adjustment. The court sentenced him to concurrent 27-month terms of imprisonment and three years of supervised release. Finally, finding that Luther had the ability to pay a fine, the court imposed one of $50,000.
Luther Mellen now appeals his conviction at trial and the district court’s rulings on sentencing.
II.
Luther first asks us to reverse his convictions for conspiracy to defraud the United States and for receipt of stolen government property. He argues that the government failed to adduce sufficient evidence to sustain either conviction. Luther also maintains that the prosecutor in summation improperly referred to his election not to testify. We find these arguments unavailing and affirm the convictions.
A. The Supreme Court has emphasized that, in reviewing a conviction for sufficiency of the evidence, we must affirm if “any rational trier of fact could have found the essential elements beyond a reasonable doubt.” Jackson v. Virginia, 443 U.S. 307, 319, 99 S.Ct. 2781, 2789, 61 L.Ed.2d 560 (1979). Accordingly, we view the evidence in the light most favorable to the government and allow the government the benefit of all reasonable inferences. United States v. William Jenkins, 981 F.2d 1281, 1282 (D.C.Cir.1992). In order to sustain a conviction for conspiracy under 18 U.S.C. § 371, the evidence must show that the “defendant entered into an agreement with at least one other person” to defraud the United States; that he “knowingly participated in the conspiracy [181]*181with the intent to' commit the offense;” and “that at least one overt act was committed in furtherance of the conspiracy.” United States v. Gatling, 96 F.3d 1511, 1518 (D.C.Cir.1996) (citation omitted). In order to sustain a conviction for receipt of stolen government property, the evidence must show that defendant received, concealed, or retained government property “with intent to convert it to his use or gain, knowing it to have been ... stolen.” 18 U.S.C. § 641.
The government adduced sufficient evidence to prove both counts beyond a reasonable doubt. In particular, the government showed that Luther took several affirmative steps to secure a stolen laptop computer for his son, and that Luther obtained the computer through the agreement and cooperation of his wife. A reasonable jury could also readily infer that several of the stolen items found in the Mellens’ home were being used by Luther as well as by his wife.
Luther argues that the evidence failed to show he knew any of these goods were stolen, and that, accordingly, he also could not have “knowingly participated” in the conspiracy. There is ample evidence, however, from which a jury could find that Luther knew what his wife was up to. See, e.g., Trial Tr., Oct. 30, 2002 (A.M.), at 51-53 (e-mail from Luther < to Elizabeth, forwarding EPA’s policy allowing only de minimis use of government property for employees’ personal needs). Moreover, guilty knowledge need not be proven only by evidence of what a defendant affirmatively knew. Rather, the government may show that, when faced with reason to suspect he is-dealing in stolen property, the defendant consciously avoided learning that fact. See United States v. Reyes, 302 F.3d 48, 54-55 (2d Cir.2002), Here, a jury could have concluded that Luther was in charge of the couple’s finances, that he understood the way government purchasing works, and that he knew the nature of his wife’s work. It would not take a rocket scientist to deduce that the electronic equipment Luther was himself using was stolen — an EPA employee with procurement training could do that. See Trial Tr., Nov. 4, 2002 (A.M.), at 103-06. Accordingly, when Luther agreed to take part in Elizabeth’s activities — by joining to procure the laptop or by availing himself of the goods in the house — he did so with all the knowledge necessary to 'sustain his convictions.
B. At closing argument, the prosecutor asked the jury not to equate Luther Mel-len’s passive role with a lack of knowledge. The prosecutor alluded to Luther’s demeanor at trial:
You know, Luther Mellen actually has been sitting there very, very quietly all throughout this trial, writing as he’s doing now, kind of tucked behind his attorney — [objection]—tucked behind his attorney — [overruled]—so maybe you wouldn’t notice him. Do you think he’s missed anything that’s gone on in this trial, Ladies and Gentlemen?
Trial Tr., Nov. 6, 2002 (A.M.), at 35. Following the summation, the court issued a curative instruction, reminding the jury that “[n]o defendant ... is under any obligation to say anything, to testify, offer any evidence, do anything.” Id. at 42.
Luther argues that — despite the court’s curative instruction — the prosecutor’s statement constitutes reversible error. As Luther points out, it is well established that the Fifth Amendment prohibits the government from highlighting a defendant’s election not to testify. See Griffin v. California, 380 U.S. 609, 613-15, 85 S.Ct. 1229, 1232-33, 14 L.Ed.2d 106 (1965). But not every improper statement provides a ground for reversal. In conformity [182]*182with our sister circuits, we find error only where “the language used was manifestly intended or was of such character that the jury would naturally and necessarily take it to be a comment on the failure of the accused to testify.” United States v. Williams, 521 F.2d 950, 953 (D.C.Cir.1975) (internal quotation marks omitted).
The statement at issue here does not clear this threshold. We disapprove of the prosecutor’s choice of words — she should have been more careful, to avoid even raising the issue — but we cannot say that she manifestly intended to draw attention to Luther’s failure to testify. The context suggests that she was instead trying to illustrate Luther’s awareness of his wife’s activities. Nor can we say that the jury necessarily understood the statement as a comment on Luther’s election to rest on his Fifth Amendment right not to testify: the statement described Luther’s physical appearance at the defense table, and not the choices he had made in litigating his case.
III.
Luther next challenges the district court’s application of the Sentencing Guidelines to the facts of his case. He argues that the court erred in finding him responsible for the value of all the stolen goods that entered the home he shared with Elizabeth. He also disputes the increase in his sentence for “more than minimal planning,” and the court’s decision not to grant him a downward departure or a mitigating role adjustment. Finally, Luther challenges the court’s imposition of a fíne. We examine these contentions in turn.2
A. In order to sentence a defendant under the Guidelines, the district court must determine the “relevant conduct” for which that defendant is responsible. See U.S.S.G. § lB1.3(a) (2000). For a conspiracy offense, the Sentencing Guidelines provide that relevant conduct includes “all reasonably foreseeable acts and omissions of others in furtherance of the jointly undertaken criminal activity.” Id. § 1331.3(a)(1)(b). The district court’s determination of relevant conduct in turn affects the specific offense characteristics — such as amount of loss — that are used to compute the sentence. See id. § 2B1.1(b)(1).
Here, the district court found Luther Mellen responsible for a loss of $225,582.63. Luther does not dispute that this figure accurately reflects the value of stolen goods that his wife brought into their house. What he challenges is the relevance of his wife’s behavior in this regard to the determination of his sentence.
The parties disagree over the standard of review governing the district court’s determination of relevant conduct. Luther contends that this is a question of law to be reviewed de novo. Appellant’s Br. at 17. The government cites United [183]*183States v. Seiler, 348 F.3d 265 (D.C.Cir. 2003), ánd United States v. Pinnick, 47 F.3d 434 (D.C.Cir.1995), for the proposition that we review relevant conduct determinations only for clear error. In Seiler, however, the dispute was a factual one as to whether the district court erred in finding that the defendant laundered money and obtained proceeds from a criminal conspiracy. 348 F.3d at 268-69. The dispute in Pinnick similarly involved the factual findings underlying the district court’s determination of relevant conduct. 47 F.3d at 437. By contrast, where as here the relevant conduct issue involves not only a factual question, but “the district court’s application of the guidelines to the facts,” the proper standard is due deference — one between clear error and de novo review. 18 U.S.C. § 3742(e); see United States v. Jackson, 161 F.3d 24, 28 (D.C.Cir.1998).
In attributing to Luther the value of property that he was not shown to have used, the district court reasoned that Luther “knew that the property was [in the house]. He knew of his wife’s involvement.” Sentencing Hr’g Tr. at 18. The Sentencing Guidelines, however, provide that the conduct of co-conspirators is attributable to the defendant as relevant conduct only if that conduct is both foreseeable to the defendant and “in furtherance” of the “jointly undertaken” activity. U.S.S.G. § 1331.3(a)(1)(B) (2000). Thus, where two individuals agree to commit an offense, each becomes liable for actions taken by the other in furtherance of that particular crime. See United States v. Saro, 24 F.3d 283, 288 (D.C.Cir.1994) (“Mere foreseeability is not enough: someone who belongs to a drug conspiracy may well be able to foresee that his co-ventur-ers, in addition to acting in furtherance of his agreement with them, will be conducting drug transactions of their own on the side, but he is not automatically accountable for albof those side deals.”).
In keeping with this rule, the 'Guidelines expressly require sentencing courts to determine the scope of each defendant’s conspiratorial agreement. See U.S.S.G. § 1BL3 cmt. n. 2 (2000); see also United States v. Childress, 58 F.3d 693, 723 (D.C.Cir.1995) (per curiam) (requiring district court to “spell out” its findings on scope); United States v. Edmond, 52 F.3d 1080, 1105-06 (D.C.Cir.1994) (per curiam) (same). Here, the district court merely found that the presence of stolen goods in the house was foreseeable to Luther. The court did not find that Luther agreed to let his wife store them there.
Our recent decision in United States v. Seiler illustrates the link that is missing in this case. Seiler was convicted of conspiring with a government contractor fraudulently to mark-up bids for NASA contracts. See 348 F.3d at 267. One of the schemes involved Seiler’s own subcontracting company, but two others did not. In affirming the district court’s determination that all three schemes constituted relevant conduct, we required some evidence that Seiler agreed to participate in each. Id. at 268-69. For the schemes that did not involve his company, we observed that Seiler participated by laundering money in one, and that the district court reasonably concluded he was paid to help carry out the other. Id. Thus, for every scheme included as relevant conduct, we could point to record evidence indicating the defendant’s agreement to join that aspect of the conspiracy.
There is nothing inherently implausible about the dissent’s contrary “in for a penny, in for a pound” approach, but it is clearly foreclosed by our precedents. We have repeatedly held, in conformity with our sister circuits, that the scope of a defendant’s particular conspiratorial [184]*184agreement controls his sentencing exposure. Where the record is-unclear as to whether the crimes at issue constitute a single or multiple conspiracies, the sentencing court cannot assume the former and thereby obviate its duty to determine the scope of each defendant’s agreement. Saro, 24 F.3d at 288-89. What is more, even when there is but a single conspiracy, and “there [is] sufficient evidence against each of the [defendants] to conclude that she or he agreed to further the purposes of this single conspiracy,” we still require the sentencing court to determine the scope of each defendant’s agreement. Childress, 58 F.3d at 712, 722. In Childress, for example, we upheld the finding of a single conspiracy, but nonetheless vacated the sentences, because the court “focus[ed] exclusively on reasonable foreseeability” without considering the extent of each defendant’s agreement. Id. at 723.3
In this case, the government is on solid ground with respect to the laptop and any equipment used by Luther. As for the bulk of the $225,000 worth of stolen equipment, however, the government’s case shows at most that Luther knew about its transitory presence in the house. As we have held, Luther cannot close his eyes to the obvious. But that evidence of knowledge does not show agreement, and such a showing is required before attributing aspects of the conspiracy to Luther as relevant conduct. See, Reyes, 302 F.3d at 54 (Conscious avoidance doctrine “may be invoked to prove defendant had knowledge of the unlawful conspiracy. But we do not permit the doctrine to be used to prove intent to participate in a conspiracy”).
The government’s case that Luther Mel-len took part in the conspiracy to the extent of all the goods his wife brought into their house — as opposed to the more limited extent of the goods Luther himself used- — is based on little more than the fact that Luther and his wife owned the home together. There is a significant body of law about when individuals can be held responsible for allowing their homes to be used in furtherance of a crime. See, e.g., United States v. Morillo, 158 F.3d 18, 23 (1st Cir.1998); United States v. Brito, 136 F.3d 397, 409 (5th Cir.1998); United States v. Ronald Jenkins, 78 F.3d 1283, 1286 (8th Cir.1996); United States v. Rice, 1992 WL 240686 at *5-6 (4th Cir.1992) (unpublished opinion). In such cases, however, the defendants either knowingly allowed non-owners to use their homes or took affirmative steps to facilitate the use of their property. In the absence of such facts, mere acquiescence in the conduct of a co-owner ié insufficient to support the necessary conclusion that the defendant agreed to the illegal use of his home.4
[185]*185This is particularly true here, given the significant evidence that Elizabeth tried to keep Luther from discovering the stolen goods she was storing in their home-evidence not present in any of-the above cases. The government’s own witnesses repeatedly testified they took steps, at Elizabeth’s instruction, to prevent Luther from appreciating the scope of her crimes. This evidence indicates that while he may not have attempted to block his wife’s use of what was, after all, her home too, he did not agree to such use, either. If he had agreed, what would be the point of trying to keep him in the dark about the extent of the conspiracy?
The government would have us find agreement from nothing more than the closeness of the Mellens’ marriage. Thus, the government devotes a notable part of its brief to chronicling the nature of their relationship: they had been married over 15 years, they drove to work together, Elizabeth prepared meals for her husband, and so on. U.S. Br. at 33-34. We think the government’s resort to such arguments indicates the weakness of its case. Homer thought there was “nothing greater and better than this — when a husband and wife keep a household in oneness of mind,” The Odyssey, bk. VI, l. 180, but there is no evidence that the drafters of the Sentencing Guidelines assumed such an ideal could substitute for proof of an agreement to participate in a conspiracy. The record suggests that Elizabeth conducted the conspiracy and made use of the house as she pleased, without consulting her husband. The fact that he knew what she was doing does not mean he agreed to it. .
The government argues that even if we reverse the district court’s determination of relevant conduct for conspiracy, we should still uphold Luther’s sentence. This argument is based on Luther’s conviction for receipt of stolen government property: the government maintains that even if he did not agree to the scope of his wife’s activities, Luther still “receiv[ed], concealed], or retain[ed]” all the stolen goods that Elizabeth brought into their house. See 18 U.S.C. § 641; U.S. Br. at 47-48. In essence, the government maintains that Luther violated 18 U.S.C. § 641 because he knew that his wife was storing stolen property in their house.
We. do not agree. While this court has allowed juries to infer that a defendant exercises constructive possession over items found in his home, we have done so only when the record suggests the defendant himself exercised dominion and control over the items at issue. See United States v. Wahl, 290 F.3d 370, 376 (D.C.'Cir.2002) (noting that evidence of a gun found in a defendant’s house “may not alone compel a conclusion that [defendant] had constructive possession”); United States v. Edelin, 996 F.2d 1238, 1241 (D.C.Cir.1993) (per curiam) (allowing an inference of constructive possession of drugs found in a bedroom dresser based on specific evidence that defendant occupied the bedroom and exercised dominion and control over the dresser). Nothing in the record before us indicates that Luther exercised dominion and control over stolen goods Elizabeth intended for her relatives, just because she temporarily stored the goods in the house she shared with Luther.-
[186]*186The government cites United States v. Sylvia Jenkins, 928 F.2d 1175 (D.C.Cir. 1991), where we upheld the sentence of a mother convicted of trafficking cocaine found in areas of her house inhabited by her son and other, unrelated individuals. In Jenkins, as here, the incriminatory evidence was stored largely out of defendant’s view, but — unlike this ease — the record contained no suggestion that the other participants were actively hiding it from her. Id. at 1179. In addition, police found ammunition in a bedroom occupied solely by Jenkins, and we held that a jury could infer guilt based on the theory that guns and drugs go together. See id. (“When this [ammunition] is added we are convinced that a rational juror could find Jenkins’ guilt beyond a reasonable doubt.”). Even with this additional evidence, we found that the government had “just barely” made its case. Id. As such language suggests, we are unwilling to expand that precedent to cover this case.5
What is more, 18 U.S.C. § 641 requires not simply that Luther received or concealed stolen property, but that he did so with “the intent to convert it to his use or gain.” The record in this case is bereft of any suggestion that Luther intended to convert $225,582.63 worth of electronics' — • most of which left the house shortly after it was brought in — to his own use or gain. At oral argument, the government indicated that Luther knew that being able to give significant gifts to her relatives made his wife happy. This, however, merely shows that Elizabeth gained something from the crimes, not that her husband did so as well.
In sum, giving due deference to the district court’s findings, we must nonetheless conclude that the court erred in determining the relevant conduct and amount of loss attributable to Luther Mellen. We remand for resentencing on the conspiracy and receipt of stolen property counts, and instruct the district court to limit Luther’s responsibility to the laptop computer and to any goods he personally used. These goods may include some items found in use in the Mellens’ home, but should not include items — such as those that passed through the home and into the hands of Elizabeth’s relatives — for which the record contains no evidence of Luther’s agreement.
B. The district court also increased Luther’s sentence by two levels because his crimes involved “more than minimal planning.” See U.S.S.G. § 2B1.1(b)(4)(A) (2000). The Guidelines call for this adjustment when the crime involves “more planning than is typical for commission of the offense in a simple form.” Id. § 1B1.1 cmt. n. 1(f). More than minimal planning is also present “in any case involving repeated acts over a period of time, unless it is clear that each instance is purely opportune.” Id. The Guidelines also note that “planning is often related to increased difficulties of detection and proof.” Id. § 2B1.1 cmt. background. Because a determination of more than minimal planning involves analysis of both law and fact, we give the district court’s findings due deference. United States v. Kim, 23 F.3d 513, 516-17 (D.C.Cir.1994).
[187]*187Limiting our inquiry to the crimes in which Luther Mellen agreed to participate, we affirm the increase for more than minimal planning. The series of transactions relating to the laptop alone involved “more planning than is typical for the commission of the offense in a simple form”: Elizabeth Mellen had to place an order with Robert Sweeney, Sweeney had to deliver the computer to Elizabeth or her home (in exchange for which she allowed him to bill his time to DOE), and Luther had to take the computer and deliver it to his son in North Carolina. Luther even participated in the concealment of the laptop: when he found out that the family was under investigation, Luther instructed his son not to “be around” the computer, as a result of which his son hid it in the mountains of North Carolina. Trial Tr., Nov. 4, 2002 (A.M.) at 65. In addition to the laptop, Luther also sent his son several power cords, which were also paid for by DOE. See id. at 52-53. In light of all this, we cannot say that the district court erred in applying the two-level increase.
C. Given our remand on the amount of loss, we need not reach Luther’s request for a downward departure. That request was based on an assertion that the district court’s finding on the amount of loss overstated Luther’s involvement in the crimes. At any rate, we note that a district court’s decision not to depart downward is reviewable only if the district court misconstrued its authority to depart. Pinnick, 47 F.3d at 439. The record before us does not suggest that the court did so.
As for Luther’s request for a mitigating role adjustment under Section 3B1.2 of the Guidelines, we note that such adjustments are proper only when the defendant is “plainly among the least culpable” or “less culpable than most other participants.” U.S.S.G. § 3B1.2 cmt. nn. 1 & 3 (2000). Here, the district court reasonably could have found Luther as -culpable as several other small-scale participants in this large-scale conspiracy.
Finally, we turn to Luther’s contention that the district court improperly imposed a fine. Under the Guidelines, the court must impose a fine unless the defendant is unable to pay one. U.S.S.G. § 5E1.2(a) (2000). We review the court’s finding on ability to pay only for clear error. United States v. Mastropierro, 931 F.2d 905, 907 (D.C.Cir.1991). Here, the court found that Luther had an ability to pay based on his government pension— which he apparently retained — and his assets at the time of sentencing. See Sentencing Hr’g Tr. at 26-31. We see no reason to overturn this finding. We note, however, that the amount of the fine will be affected by the court’s redetermination of the amount' "of loss — see U.S.S.G § 5E1.2(c)(3) (2000) — and the district court should alter the fine accordingly.
IV.
“The extent of a defendant’s vicarious liability under conspiracy law is always determined by the scope of his agreement with his co-conspirators.” Saro, 24 F.3d at 288. Here, the district court found a husband vicariously liable for all the stolen property his wife temporarily stored in their home, without evidence that he agreed to join in his wife’s criminal activity to that extent. Such a finding threatens to turn all spouses into co-conspirators because of their agreement to marry — not because of their agreement to participate in a particular conspiracy. We require more specific evidence of guilt, and accordingly remand for resentencing based only on the crimes in which the husband agreed to participate.