OPINION OF THE COURT
In 1996, after fourteen years of marriage, Ira Kukafka abandoned his wife and four children in New Jersey and fled to Florida where he shared an apartment with his mother. Eight years later, owing over $125,000 in outstanding child support, Kukafka was indicted by a New Jersey Grand Jury for willful failure to pay his support obligation in violation of the federal Child Support Recovery Act, 18 U.S.C. § 228. Kukafka was convicted and sentenced to two years in prison and $145,337 in restitution. On appeal, Kukafka’s primary challenge is that, following the Supreme Court’s decision in
United States v. Morrison,
I. Background
Ira Kukafka is a trained electrical engineer, with an undergraduate degree from *533 the City University of New York and a Master’s degree from Fairleigh Dickinson University. He also has several credits toward a PhD at the New Jersey Institute of Technology. During the 1970’s and 1980’s, Kukafka worked as an engineer for AT & T and then for the United States Army. In 1982, he married Esther Bailey and moved to a house in Oakhurst, New Jersey. The couple have four children.
In 1984, Kukafka left engineering to go into the real estate business with his father-in-law, Harry Bailey. After ten years, and facing increasing financial difficulty, the partnership dissolved because of a bad real estate venture. The bank foreclosed on Kukafka’s house, which had been used as collateral for part of the deal, forcing him and his family to move in with his in-laws. Over the next two years, financial difficulties and family pressures led to problems in Kukafka’s marriage. He worked only intermittently, and two of his children were diagnosed with serious illnesses — one with retinal blastoma resulting in the loss of an eye, and the other with a congenital stomach disorder and a severe developmental disability. In mid-1996, after a fight with his father-in-law, Kukafka left his family to stay with his sister in New York. Soon thereafter he moved to Florida and, from that time forward, had only sporadic contact with his children.
In 1997, Esther Bailey commenced divorce proceedings against her husband. Kukafka did not contest the divorce and the Superior Court of New Jersey entered a default Judgment of Divorce (“Divorce Decree”). Among other things, the Divorce Decree required Kukafka to pay $400 per week in child support, $350 per week in alimony, for an ecclesiastical divorce, and to maintain health insurance for his children.
From 1998 to 2004, Kukafka consistently failed to make child support payments. He made no payments in 2004, the year this action was commenced. During the period he was in default, Kukafka was living with his mother and had no rent or basic living expenses. Although he applied for various positions, his only employment was one week of work in December 2000, for which he earned about $2,900. Kukafka also earned sporadic income from an assortment of odd jobs, such as providing driving service to the elderly. Around this time, Kukafka was also diagnosed with depression and diabetes.
By August 2004, Kukafka had paid only $1,657 in child support and owed $127,343 in outstanding payments. Except for $157 in 2001, every payment Kukafka made was pursuant to court order following contempt proceedings in Florida. 1 These payments were the minimum amount needed to avoid being sent to jail for ninety days. During the contempt proceedings, Kukafka claimed, among other things: that he should not have to pay child support; that his ex-wife earned enough on her own to support their children; that he was unable to obtain suitable employment; that he was awaiting returns on several real estate ventures; that he was pursuing needed licensing and education; and that his illnesses prevented him from finding work. He was repeatedly admonished to make efforts to find work and to pay the $400 per week obligation.
*534 Ultimately, a grand jury indicted Kukaf-ka on two counts of knowing failure to pay child support. Count I charged Kukafka with willful failure to make support payments from December 1997 until June 23, 1998 in violation of 18 U.S.C. § 228(a)(1). Count II charged him with willful failure to provide support from June 24, 1998 until August 20, 2004 in violation of 18 U.S.C. § 228(a)(3). After a two-week trial, a jury found Kukafka guilty of both counts and made a supplementary finding that he had violated one or more specific court orders. The District Court sentenced him to two years in prison, one year of supervised release, $145,337 in restitution, and a $200 special assessment. This appeal followed. We have carefully reviewed the numerous issues Kukafka raises. Of these, the four relating to the Child Support Recovery Act warrant discussion. His other arguments are without merit and require no further discussion.
II. Discussion
The Child Support Recovery Act of 1992, as amended by the Deadbeat Parents Punishment Act of 1998, Pub.L. No. 105-187, 112 Stat. 618 (1998) (hereinafter “the Deadbeat Parents Act,” or “the Act”),
2
makes it a federal crime to willfully fail to pay a child support obligation to a child in another state.
3
The Act was intended by Congress to strengthen state efforts to enforce child support obligations against parents who flee across state lines. Specifically, the Act “addresses the growing problem of interstate enforcement of child support by punishing certain persons who intentionally fail to pay their child support obligations.”
See
H.R.Rep. No. 102-771, at 4 (1992).
See generally United States v. Kramer,
Kukafka was convicted under §§ 228(a)(1) and (a)(3). Under § 228(a)(1), if a child support obligation remains unpaid for longer than one year, or is greater than $5000, the offender is subject to six months’ imprisonment. 18 U.S.C. § 228(a)(1), (c)(1). Under § 228(a)(3), if the child support obligation remains unpaid for longer than two years, or is greater than $10,000, the offender is subject to two years’ imprisonment. 18 U.S.C. § 228(a)(3), (c)(2). By their terms, these provisions apply only to “interstate” support obligations.
The District Court had jurisdiction under 18 U.S.C. § 3231. We have jurisdiction under 28 U.S.C. § 1291 and 18 U.S.C. § 3742(a).
See United States v. Tykarsky,
A. Commerce Clause
Kukafka argues that the Deadbeat Parents Act exceeds the scope of Congress’s power under the Commerce Clause and violates the Tenth Amendment of the U.S. Constitution. Because he challenges the constitutionality of the Act, we exercise plenary review over the District Court’s
*535
assertion of federal jurisdiction.
United States v. Singletary,
In
United States v. Lopez,
In
United States v. Parker,
Failure to make required payments gives rise to a debt which implicates economic activity. This is an instance where “local activities ... are ... part of a national problem with a substantial impact upon interstate commerce.” It is significant that the legislative history underlying the Act establishes that state efforts have been inadequate to ensure that payments owed are actually made and that, as a result, annual obligations covered by the Act total billions of dollars. Finally, unlike the statute the Court reviewed in Lopez, the [Deadbeat Parents Act] involves an unbroken chain of interstate events which begins when one parent crosses state lines and ends with interstate collection efforts.
Id.
at 31 (quoting
United States v. Bishop,
Kukafka contends that
Parker
was effectively overruled by
United States v. Morrison,
Focusing on the third
Lopez
category, “the Court provided a framework to determine whether a law regulates intrastate activity that has a substantial effect on interstate commerce.”
United States v. Gregg,
With this in mind, the Deadbeat Parents Act clearly regulates an activity having a substantial effect on interstate commerce. First, the activity regulated under the Act is commercial, or economic, in nature. As characterized in
Parker,
failure to fulfill a financial obligation “gives rise to a debt which implicates economic activity.”
We therefore have no trouble determining that a rational basis exists for concluding that failure to make interstate child support payments substantially affects interstate commerce. Accordingly, even after Morrison, the Deadbeat Parents Act falls within Congress’s power under the third Lopez category.
The constitutionality of the Deadbeat Parents Act is unaffected by
Morrison
for the additional reason that the Act falls under the second
Lopez
category, which was not addressed by
Morrison. See United States v. MacEwan,
The Act covers “persons or things” in interstate commerce, even though it punishes only those who have “willfully
fail[ed]
to pay a support obligation.” 28 U.S.C. § 228(a) (emphasis added). That is, by criminalizing an individual’s willful failure to pay, the Deadbeat Parents Act encourages the payment of interstate debts.
See
H.R.Rep. No. 102-771, at 6 (stating that Act promotes payment by “taking the incentive out of moving interstate to avoid payment.”). In this way, the Act prevents “frustration of an interstate commercial transaction that otherwise would have occurred absent the defendant’s dereliction.”
United States v. Bailey,
We therefore conclude that the Deadbeat Parents Act properly regulates “persons or things in interstate commerce.”
See United States v. King,
In sum, we reject Kukafka’s argument that Morrison overrules our conclusion in Parker that the Act is constitutional. Instead, we conclude that the Deadbeat Parents Act is a constitutional exercise of congressional power under the second and third categories of Lopez. 5
B. Collateral Challenge
Kukafka next argues that his indictment must be dismissed because the Divorce Decree containing his child support obligation includes a requirement that he obtain an ecclesiastical dissolution of marriage — specifically, a “Get”.
6
He contends that this provision interferes with his free exercise of religion under the First Amendment of the Constitution. The District Court ruled that Kukafka could not attack the indictment by collaterally challenging the Divorce Decree. Our review is plenary.
Singletary,
The Deadbeat Parents Act requires that a defendant be subject to a “support obligation,” which is defined as: ■
any amount determined under a court order or an order of an administrative process pursuant to the law of a State or of an Indian tribe to be due from a person for the support and maintenance of a child or of a child and the parent with whom the child is living.
18 U.S.C. § 228(f)(3). According to this plain language, Kukafka is subject to a state court order obligating him to pay for *538 the “support and maintenance of a child.” Kukafka does not contest that he is subject to such an order.
Rather, Kukafka challenges the provision in that order requiring him to pay for a Get. He argues that, because of the unconstitutionality of the Get provision, the entire Divorce Decree, which contains the support obligation, must be invalid. Because the decree is invalid, he claims, his indictment should be dismissed.
We see no merit to this collateral challenge. Regardless of the constitutionality of the Get provision, Kukafka’s conviction is based upon his support obligation, which is wholly unrelated to and plainly separate from any obligation that he pay for the Get. Clearly, a federal prosecution under the Deadbeat Parents Act is not the appropriate arena in which to litigate the terms of Kukafka’s divorce. To sustain a conviction, the Act does not require a federal court to ensure the validity of each aspect of the underlying court order containing the support obligation.
See United States v. Brand,
In sum, the constitutionality of the Get bears no relevant relationship to the indictment in this case, and we see no reason to indulge Kukafka’s effort to litigate this unrelated issue. Accordingly, we reject his collateral challenge to prosecution under the Deadbeat Parents Act. 8
Our conclusion is supported by the fact that Kukafka has failed to present any evidence that he ever contested payment of the Get in state court proceedings. Indeed, as the government points out, and Kukafka does not dispute, he has already paid for his wife to obtain the Get. That payment, the only payment in this ease that he willingly made, provides no basis for a subsequent collateral challenge to his federal prosecution under the Deadbeat Parents Act.
*539 C. Jury Charge
Kukafka argues that the District Court erred in instructing the jury on the willfulness element of the Deadbeat Parents Act. Specifically, he objects to the District Court’s instruction that:
[i]n determining whether the defendant acted willfully, you must first find that the defendant had the ability to pay the child support.
This element of the offense is satisfied if you find that the defendant had the ability to pay any part of his child support, even if he did not have the entire amount which he was ordered to pay.
(App. at 1018.) Kukafka argues that the instruction lowered the government’s burden of proof by allowing the jury to find a willful violation “merely by determining that [he] had a spare quarter in his pocket one day in the year .... ” (Appellant’s Br. at 22.) Although Kukafka objected to this instruction before the District Court, he did so on a different basis;
9
accordingly, our review is for plain error.
United States v. Zehrbach,
The “ability to pay” is not an element of a Deadbeat Parents Act offense. Instead, “inability to pay ... provides a defense to liability ... and the defendant is free to present evidence that ... his income was not sufficient, after meeting his basic subsistence needs, to enable him to pay any portion of the support obligation.”
United States v. Mattice,
Kukafka’s contention that the instruction- misled the jury is contradicted by the record. The jury instructions plainly show that the District Court told the jury that Kukafka’s refusal to pay his support obligation had to be “voluntary and intentional,” and that Kukafka had to be aware of “the unlawful nature of his acts.” Moreover, the Court explained that Kukafka had a right to keep enough money to subsist and. to meet his basic personal needs. The Court did not invite the jury to convict Kukafka if it believed he had some spare money on a given day. Accordingly, the District Court’s instruction was not erroneous.
*540 III. Kukafka’s Sentence
Finally, Kukafka contends, and the government agrees, that the District Court mistakenly imposed a two-year concurrent sentence with a $100 special assessment for Count I of the indictment. Count I charged a violation of 18 U.S.C. § 228(a)(1), which carries a maximum prison sentence of six months and is a Class B misdemeanor.
See
18 U.S.C. § 228(c)(1); 18 U.S.C. § 3559(a)(7). A Class B misdemeanor carries a special assessment of $10.
See
18 U.S.C. § 3013(a)(l)(A)(ii). There is no challenge to the two-year sentence imposed on Count II. Therefore, we will remand the case to the District Court for the sole and limited purpose of correcting the sentence regarding Count I to reflect the applicable statutory provisions.
See United States v. Dixon,
IV. Conclusion
For the foregoing reasons, we will affirm the judgment of conviction, and will remand the case to the District Court to correct the sentence on Count I only.
Notes
. In 1997, Esther Bailey began receiving welfare checks in exchange for assigning her support collection rights to the State. After she made this assignment, New Jersey requested that Florida enforce Kukafka’s child support obligation and seek collection from Kukafka. Under the Uniform Reciprocal Enforcement of Support Act ("URESA”), and the more recent Uniform Interstate Family Support Act ("UIFSA”), Florida agreed to enforce the child support obligation.
. The "operative language” of the statute remained the same, and we rely on cases from both before and after 1998.
United States v. Bigford,
. The Act punishes “any person ... who willfully fails to pay a support obligation with respect to a child who resides in another State,” or "any person who ... travels in interstate or foreign commerce with the intent to evade a support obligation.” 18 U.S.C. § 228(a).
.In
Parker
we did not explicitly place the Deadbeat Parents Act into Lopez's second category. Nevertheless, the reasoning of the cases adopted by
Parker
makes clear that, under the second
Lopez
category, the Act regulates "things in interstate commerce.”
See Sage,
. Because the Deadbeat Parents Act is a proper exercise of Congress's power under the Commerce Clause, Kukafka's Tenth Amendment challenge must fail as well.
See Parker,
. A "Get” is a divorce under Jewish law — or a document a rabbi signs to grant a divorce. Black’s Law Dictionary (8th ed.2004).
. Some courts have permitted challenges to the underlying support obligation based on the state court’s lack of personal jurisdiction.
See Bigford,
. Notably, every court of appeals that has addressed merits-based collateral challenges to prosecutions under the Deadbeat Parents Act has reached the same conclusion.
See United States v. Kerley,
. Kukafka argued to the District Court that it should have instructed the jury on the Deadbeat Parents Act's “rebuttable presumption,” which the District Court did not do. See 18 U.S.C. § 228(b) (“The existence of a support obligation that was in effect for the time period charged in the indictment ... creates a rebuttable presumption that the obligor has the ability to pay the support obligation for that time period.”). He does not, however, raise this issue on appeal. Accordingly, we only address Kukafka's contention that the District Court erroneously instructed the jury on his ability to pay. We note that, to the extent that the District Court erred by not instructing the jury on the rebuttable presumption, such error would be harmless. It could only have benefitted Kukafka to not have to overcome a rebuttable presumption that he could pay the obligation.
