OPINION
John Joseph Duane appeals his sentence for receiving and possessing child pornography in violation of 18 U.S.C. § 2252(a)(2) and (a)(4). Duane contends that: (1) calculating his sentence using the 2005 Sentencing Guidelines violated the Ex Post Facto Clause; (2) the district court erred in enhancing Duane’s sentence pursuant to U.S.S.G. § 2G2.2(b)(4) for receiving and possessing sadistic images; and (3) his sentence is unreasonable. For the following reasons, we affirm.
I.
On November 10, 2005, federal agents lawfully obtained Duane’s computer. The agents found 3,728 images of child erotica, 674 images of child pornography, and 15 images of sadistic child pornography. Duane eventually plеd guilty to receiving child pornography in violation of 18 U.S.C. § 2252(a)(2) arising out of internet transactions that occurred on March 15 and April 12, 2003, and possessing child pornography in violation of § 2252(a)(4) based on images that remained on his computer when it was obtained on November 10, 2005.
Using the 2005 Sentencing Guidelines, the Presentence Investigation Report (“PSR”) calculated Duane’s base offense level as 22 pursuant to U.S.S.G. § 2G2.2(a)(2). This calculation accounted for receiving child pornography pursuant to 18 U.S.C. § 2252(a)(2). The PSR then added two levels because some material involved a prepubescent minor; added four levels becausе the offense involved materials that portrayed sadistic conduct; added two levels because the offense involved the use of a computer; added five levels because the offense involved more than 600 images; subtracted two levels because Duane had no intent to traffic in child pornography; and subtracted three levels because Duane accepted responsibility. All told, the PSR recommended an adjusted offense level of 30. Given Duane’s criminal history category I, this resulted in a Guidelines range of 97-121 months.
Duane filed a Sentencing Memorandum with the district court, objecting to the use of the 2005 Guidelines and to the § 2G2.2(b)(2) sadistic image enhancement. Duane also argued that he should be sentenced below the Guidelines range because: (1) he had zero criminal history points; (2) the majority of images on his computer consisted of child erotica, not pornography; (3) he was 57 years old, yet had no history of previous sexual misconduct; (4) he did not touch any children and was not at risk to do so in the future; and (5) he was amenable to treatment.
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At the sentencing hearing, the district court overruled Duane’s objections to the use of the 2005 Guidelines and to the § 2G2.2(b)(2) enhancement. First, citing
United States v. Barton,
Duane’s expert witness, Dr. Breeding, testified that Duane was not at risk for committing bodily contact sex offenses but was likely to remain involved with pornography. He also testified that Duane would be amenable to treatment for “sexual addiction,” recommended a two-year program, and opined thаt there would not be any clinical benefit to a longer period of incarceration.
Before announcing Duane’s sentence, the district court noted that
in looking at the 3553(a) factors, we’re counseled to consider the nature and circumstances of the offense, certainly other things, the history and characteristics of the defendant, and the other factors. The sentence needs to reflect the seriousness of the offense and provide deterrence, protect the public.
The district court then emphasized the seriousness of Duane’s crime and that it was “not because the defendаnt ... has ever acted out the things that are portrayed on some of these pictures or that he has tried to contact or molest a child.... ” Instead, the crime was serious because it involved “little children,” and “there is a market for this stuff because people like Mr. Duane acquire it, and that market drives victimization of these children.” The court acknowledged that the images ranged from “masochistic portrayals of deviancy” to “so-called erotica[,]” but noted that “even [the latter] is a terrible victimization. ...” In addition, the district court added that “[deterrence should be part of the sentencing factor here,” given that child pornography is produced “for the gratification and purchase by Mr. Duane and unfortunately others.” The district court also recognized that it was “obliged to consider” the recommended Guidelines range, and that “[t]here’s no doubt that Mr. Duane needs treatment and assistance while serving this sentence so that he does not re-offend, and I believe that that will be provided for him.”
The court eventually sentenced Duane to 97 months of imprisonment, explaining that this sentence was “sufficient given Mr. Duane’s age to make certain that he is not further involved in this disgusting business,” and “sufficient to meet sentencing objectives of punishmеnt, incapacitation, [and] general deterrence.”
Before adjourning the hearing, the district court initiated the following dialogue with Ms. Lawless (the government’s attorney) and Ms. Wyrosdick (Duane’s attorney):
Court: Are there any objections that I haven’t heard to this sentence,
Ms. Lawless? Ms. Lawless: Not for the United States, Your Honor.
The Court: Ms. Wyrosdick?
Ms. Wyrosdick: No, sir.
The Court: All right. Then that sentence announced will be imposed.
II.
Duane first contends that calculating his Guidelines range using the 2005 Guidelines violated the
Ex Post Facto
Clause of the Constitution because two of the three of
*445
fenses he was sentenced for occurred prior to the enactment of the 2005 Guidelines. Duane received child pornography in violation of 18 U.S.C. § 2252(a)(2) on two occasions in 2003. He continued to possess child pornography in violation of § 2252(a)(4) on November 10, 2005, after the 2005 Guidelines had gone into effect November 1, 2005. Using the 2005 Guidelines, the PSR calculated Duane’s base offense level as 22 and applied a five-level enhancement, pursuant to U.S.S.G. § 2G2.2(b)(7)(D), because the offense involved more than 600 images. Under the 2002 Guidelines in effect when Duane received the images, Duane’s base offense level would have been 17, and would not have been enhanced based on the number of images he possessed.
See
U.S.S.G. § 2G2.2 (2002). Duane argues that this retroactive application of the 2005 Guidelines viоlated the
Ex Post Facto
Clause. Again, the district court determined, based on
United States v. Barton,
Ex post facto
challenges present questions of law that the court reviews
de novo. United States v. VanHoose,
Resolving Duane’s claim potentially involves two distinct constitutional inquiries: (1) whether the retroactive use of a revised version of the Guidelines implicates the Ex Post Facto Clause now that the Guidelines are advisory post-Booker; and (2) if so, whether the application of U.S.S.G. § lBl.ll(b)(3) — under which a revised version of the Guidelines is used if a defendant is convicted of offenses occurring before and after that version became effective — violates the Ex Post Facto Clause. We address each issue in turn.
A.
The first issue is whether a change to the Guidelines even implicates the
Ex Post Facto
Clause. Prior to
United States v. Booker,
Following
Booker,
this court has not directly addressed whether a change to the Guidelines implicates the
Ex Post Facto
*446
Clause. In
United States v. Barton,
In a footnote, the Barton court also distinguished the “ex post facto-type due process concerns” implicated by applying Booker retroactively from the Ex Post Facto Clause problem — identified in Kuss-maul — of retroactively applying mandatory Guidelines. Id. at 655 n. 4. Because mandatory Guidelines operated similarly to a statute, the retroactive application of new Guidelines directly implicated the Ex Post Facto Clause and the need to restrict arbitrary or vindictive legislative acts. Id. But, we noted, the Ex Post Facto Clause itself is applied “in a more stringent fashion” than “the ex post facto aspect of the Due Process Clause” implicated by retroactive application of Booker discretion. Id. As we explained:
Now that the Guidelines are advisory, the Guidelines calculation provides no such guarantee of an increased sentence, which means that the Guidelines are no longer akin to statutes in their authoritativeness. As such, the Ex Post Facto Clause itself is not implicated. Thus, the dual concerns of notice and the need to prevent arbitrary or vindictive legislative acts present in our earlier cases are no longer present in the same way they were when we analyzed changes to the Guidelines under the Ex Post Facto Clause.
Id.
Overall, we concluded that the retroactive application of
Booker
did not violate the Due Process Clause for two reasons. First, notice concerns were “minimized” in
Barton
because the new prospect of an above-Guidelines sentence following
Booker
would have been unlikely to change Barton’s conduct.
Id.
at 655-56. Second, in any event, the
Booker
decision was not “unexpected and indefensible by reference to the law which had been expressed prior to the conduct in issue,”
id.
at 654 (quoting
Rogers v. Tennessee,
Although we recognize that some language from the above quoted
Barton
footnote could be read to suggest that a change to the Guidelines does not raise an
ex post facto
concern, we decline to read
Barton
as announcing such a broad rule. After all,
Barton
was concerned with retroactively applying
Booker
— a judicial decision — rather than a new version of the Guidelines.
1
As the
Barton
opinion noted,
*447
these inquiries are somewhat different. Moreover, following
Barton
this court has continued to examine the
ex post facto
implications of applying a revised version of the Guidelines retroactively.
See United States v. Jeross,
For these reasons, we assume arguendo that a retroactive chаnge to the Guidelines could implicate the Ex Post Facto Clause. We therefore address whether U.S.S.G. § 1B1.11 (b)(3) violates the Ex Post Facto Clause.
B.
Guidelines policy statements provide that a sentencing court must apply the version of the Guidelines in effect at the time of sentencing unless doing so would violate the Ex Post Facto Clause. U.S.S.G. § lBl.ll(a), (b)(1). In addition, “[t]he Guidelines Manual in effect on a particular date shall be applied in its entirety.” Id. § lBl.11(b)(2). Under this “one book rule,” courts “shall not apply, for example, one guideline section from one edition of the Guidelines Manual and another guideline section from another edition of the Guidelines Manual.” Id. If a defendant is convicted of two offenses occurring both before and after a revised version of the Guidelines became effective, § lBl.ll(b)(3) provides that the revised version of the Guidelines is to be applied to both offenses. In this case, Duane was convicted of offenses that occurred before and after the 2005 Guidelines became effective. Pursuant to § lBl.ll(b)(3), the district court used the revised 2005 version of the Guidelines to determine Duane’s Guidelines range for all three offenses. Although we have not previously had occasion to directly address this issue in a published decision, we now conclude that § lBl.ll(b)(3) — at least as applied in this casе — does not violate the Ex Post Facto Clause.
“Critical to relief under the
Ex Post Facto
Clause is not an individual’s right to less punishment, but the lack of fair notice and governmental restraint when the legislature increases punishment beyond what was prescribed when the crime was consummated.”
Weaver,
Section lBl.ll(b)(3) was added to the guidelines [in 1993]. [The defendant] therefore had ample warning, when she committed the later acts ... that those acts would cause her sentence for the earlier crime to be determined in accordance with the Guidelines Manual applicable to the later offenses, and thus that the intervening amendment to [Guidelines] would apply.
Lewis,
Some courts have found further support in the Sentencing Commission’s explanation for § 1B1.11(b)(3).
See Sullivan,
On the other hand, the Third and Ninth Circuits have concluded that § lBl.ll(b)(3) does violate the
Ex Post Facto
Clause.
See United States v. Ortland,
This court has not directly addressed this issue in a published decision. But our unpublished opinion in
United States v. Lacefield
is consistent with the majority of circuits that have concluded that defendants are on notice that committing additional similar offenses may cause their previous offenses to be sentenced under revised Guidelines.
We agree with the majority of circuits addressing the issue that where, as here, offenses grouped together for sentencing purposes were committed before and after an amended version of the Guidelines went into effect, the use of the amended version of the Guidelines does not violate the Ex Post Facto Clause. Therefore, the application of § lBl.ll(b)(3) in this case presented no ex post facto problem. After receiving child pornography on two occasions in 2003, Duane continued to possess child pornography, in violation of § 2252(a)(4), following the enactment of the 2005 Guidelines. Section lBl.ll(b)(3), enacted in 1993, and the grouping rules, enacted in 1987, provided Duane constructive notice that this continued possession of child pornography would make the 2005 Guidelines applicable to all such related trafficking and possession offenses. Thus Duane had fair warning that continuing to possess the child images would subject him to a greater Guidelines range and to a five-level enhancement pursuant to U.S.S.G. § 2G2.2(b)(7)(D) (2005).
III.
Duane next asserts that the district court erred in enhancing his sentence pursuant to U.S.S.G. § 2G2.2 (b)(4) for receiv *450 ing and possessing sadistic images. 2
A.
This court reviews a district court’s interpretation of the Guidelines
de novo,
and the district court’s findings of fact for clear error.
United States v. Kosinski
B.
U.S.S.G. § 2G2.2(b)(4) provides a four-level enhancement “[i]f the offense involved material that portrays sadistic ... conduct.” Duane first argues that the enhancement was inappropriate because few (15) of the many (over 4,000) total images were sadistic, and because the small number suggests that Duane did not intend to possess the images. But even Duane concedes that the district court did not err as a matter of law. The commentary to § 2G2.2(b)(4) explicitly provides that whether a defendant
intended
to possess sadistic images is irrelevant. U.S.S.G. § 2G2.2, cmt. n. 2. Nor does § 2G2.2(b)(4) specify that its application is contingent upon any pаrticular number of sadistic images or percentage of sadistic images in relation to other prohibited images.
See United States v. Stulock,
IV.
Finally Duane contends that his sentence is unreasonable. Following
United States v. Booker,
we review sentences for reasonableness.
A.
First, Duane argues that his sentence is procedurally unreasonable because the district court’s explanation did not demonstrate that it adequately considered the § 3553(a) fаctors or his arguments for a lesser sentence.
1.
Because Duane did not seek further explanation for the sentence imposed when given an opportunity to do so, we review this claim for plain error. In United States v. Bostic, this court explained that:
after pronouncing the defendant’s sentence but before adjourning the sentencing hearing, [the district court must] ask the parties whether they have any objections to the sentence just pronounced that have not previously been raised.... If a party does not clearly articulate any objection ... then that party will ... face plain error review on appeal.
In this case, by asking if there were “any objections that I haven’t heard to this sentence,” the district court was clearly eliciting objections not previously raised. Because Duane did not object to the district court’s explanation, we review this explanation for plain error. To establish plain error, Duane must show “(1) error, (2) that was obvious or clear, (3) that affected [his] substantial rights, and (4) that affected the fairness, integrity, or public reputation of judicial proceedings.”
United States v. Vonner,
2.
In
Rita v. United States,
— U.S. -,
A lengthy explanation may be particularly unnecessary where a defendant’s arguments are “straightforward [and] conceptually simple” and where a sentencing court imposes a within-Guidelines sentence.
Id.
at 2469;
accord Vonner,
To be sure, ideally a district court
will
address a defendant’s nonfrivolous arguments for a lesser sentence.
See Vonner,
In addition, the district court is not required to explicitly consider each of the § 3553(a) factors or to engage in a “ritualistic incantation.”
United States v. Trejo-Martinez,
In this case, the district court’s explanation explicitly addressed the relevant § 3553(a) factors and most of the defendant’s arguments for a lesser sentence. We conclude that this explanation did not constitute error.
First, the record demonstrates that the sentencing court addressed the § 3553(a) factors that it found most relevant. In addition to the Guidelines range, the court focused on the seriousness of the offense. This was a proper consideration under § 3553(a)(2)(A) and a response to Duane’s argument that his offense was victimless. In addition, observing that Mr. Duane is “not the only one” who has purchased child pornography, the district court noted that “[deterrence should be a part of the sentencing factor here.” This was an appropriate consideration pursuant to § 3553(a)(2)(B). Finally, the district court referеnced Duane’s need for treatment, a proper consideration under § 3553(a)(2)(D).
The district court also addressed four out of five of Duane’s arguments for a lesser sentence. Again, Duane’s arguments were that: (1) he had zero criminal history points; (2) the majority of the images on his computer consisted of child erotica, not actual child pornography; (3) despite being 57 years old he had no history of sexual misconduct; (4) his conduct did not include touching children and he does not present a risk of such behavior; and (5) he would be amenable to treatment. The district court responded in some form to Duane’s second, third, fourth, аnd fifth arguments. As to Duane’s second argument, the district court noted that the images ranged from “masochistic portrayals of deviancy” to “so-called erotica, but even [the latter] is a terrible victimization.... ” In response to Duane’s third argument, the court explained that its sentence was “sufficient given Mr. Duane’s age to make certain that he is not further involved in this disgusting business.” Regarding Duane’s fourth argument, the district court emphasized that this crime was serious “not because the defendant ... has tried to contact or molest a child,” but because “offenders like Duane help drive this market.” Finally, in response to Duane’s fifth argument, the court recognized that “there’s no doubt that Mr. Duane needs treatment ... so that he does not re-offend, and I believe that will be provided for him.”
*453 To be sure, the district court did not respond to Duane’s first argument — that he deserved a more lenient sentence because he had zero criminal history points. 4 This was not a particularly strong argument given that Duane’s criminal history category was taken into account in determining his Guidelines range. But the argument was not completely frivolous. Because Duane had zero points at age 57, he might plausibly argue that even category I — -which applies when a defendant has zero or one сriminal history point(s)— overstated his criminal history to some degree. Although the district court would have ideally addressed this argument, we can hardly say that this failure alone constituted error in this case. Given that the district court imposed a within-Guidelines sentence, addressed the factors it found relevant, and addressed the majority of Duane’s arguments, we conclude that the district court did not err.
B.
Duane also argues that the length, or substance, of his sentence was unreasonable. “[A] sentence may [be] substantively unreasonable where the district court [1] select[s] the sentence arbitrarily, [2] bas[es] the sentence on impermissible factors, [3] fail[s] to consider pertinent § 3553(a) factors or [4] giv[es] an unreasonable amount of weight to any pertinent factor.”
United States v. Jones,
Because Duane was sentenced within the Guidelines range, a rebuttable presumption of reasonableness attaches to his sentence.
See United States v. Williams,
Y.
For the foregoing reasons, we affirm Duane’s sentence.
Notes
. Addressing the
ex post facto
implications of applying revised Guidelines retroactively, the Seventh Circuit has concluded that “the ex post facto clause should apply only to laws and regulations that bind rather than advise.”
United States v. Demaree,
. In the alternative, Duane argues that the district cоurt should have considered the relatively small number of sadistic images in determining his overall sentence. As discussed in Part IV, the district court did consider the types of images Duane possessed, and we conclude that its explanation and the length of the sentence were both reasonable.
. Title 18 U.S.C. § 3553(a) provides:
The court shall impose a sentence sufficient, but not greater than necessary, to comply with the purposes set forth in paragraph (2) of this subsection. The court, in determining the particular sentence to be imposed, shall consider—
(1) the nature and circumstances of the offense and the history and characteristics of the defendant;
(2) the need for the sentence imposed—
(A) to reflect the seriousness of the offense, to promote respect for the law, and to provide just punishment for the offense;
(B) to afford adequate deterrence to criminal conduct;
(C) to protect the public from further crimes of the defendant; and
(D) to provide the defendant with needed educational or vocational training, medical care, or other correctional treatment in the most effective manner.
. The district court also did not explicitly address Duane's second argument with respect to the proportion of erotic verses pornographic images. But this argument seems particularly unpersuasive. Duane's offense level was determined in part by his possession of over 600 pornographic images. That he also possessed an additional 3,728 erotic child images hardly seems to weigh in his favor.
