David Jennings appeals two convictions: (1) possession of a firearm (a .38 revolver) in relation to a “crime of violence” (possession of an unregistered pipe bomb); and (2) attempted interference with interstate commerce in violation of the Hobbs Act. We affirm.
I.
David Jennings planned to extort money from workers and customers of day care centers and medical offices by threatening them with homemade bombs. Jennings desсribed his plans in detail to police informant Jesus “Chuy” Herrera. After telling Chuy that he owned a gun and that he knew how to make a bomb with a remote starter, Jennings asked him to find help to execute the plan.
Chuy then brought several law enforcement officials to meet with Jennings, introducing the agents as his cousins.. Jennings discussed with these officials his plan to extort money from the dental office of Orie Gardner, D.D.S., in Baytown, Texas. Jennings planned to remove Dr. Gardnеr, her assistants, and her patients from the office, take them to a remote location, and hold them for ransom. In a recorded conversation with undercover ATF officer Ismael Rodarte, Jennings expressed his hope that children were at the office when he struck, as he believed their parents would pay substantially for their return. Jennings believed that profits from this plan would fund larger schemes in the future.
Agent Rodarte asked Jennings to bring all of his equipment to a meeting at the Republic of Texas Park in Baytown. At the meeting, Jennings showed Rodarte his .38 revolver, several pipe bombs, knives, gloves, and rope. After Rodarte convinced Jennings to leave the tools in his car, the Baytown police and bomb squad appeared, and Jennings was arrested. After the arrest, police found four functional pipe bombs and a .38 revolver inside a briefcase *797 in Jennings’s car. A search of Jennings’s home revealed four other pipe bombs and assorted electronic equipment used to construct them.
Jennings was indicted on five counts: possession of an unregistered pipe bomb in violation of 26 U.S.C. § 5861(d) (count 1), solicitation to interfere with commerce by extortion in violation of the Hobbs Act, 18 U.S.C. § 1951 (count 2), .carrying a firearm (a .38 caliber revolver) during a crime of violence (both possession of the unregistered pipe bomb and solicitation to interfere with commerce by extortion) in violation of 18 U.S.C. § 924(c) (count 3), attempted interference with commerce by extortion in violation of the Hobbs Act, 18 U.S.C. § 1951 (count 4), and carrying a pipe bomb during the interference with commerce by extortion, in violation of 18 U.S.C. § 924(c) (count 5).
At trial, Jennings moved to dismiss count 3, arguing that neither possession of a pipe bomb nor solicitation to commit a Hobbs Act violation were “crimes of viоlence.” The district court granted the motion with respect to solicitation, but denied it with respect to possession of a pipe bomb. Instead, finding that possession of an unregistered pipe bomb qualifies as a “crime of violence” as defined by statute, the district court instructed the jury that possession of a pipe bomb was a “crime of violence” as a matter of law.
Jennings also objected to the jury instructions on count 4, arguing that he could only constitutionally be convicted of that offense if his conduct had a “substantial effect” on interstate commerce. The district court overruled the objection, instructing the jury that the conduct only had to have an “effect” on interstate commerce.
The jury convicted Jennings on all five counts of the indictment and the district court sentenced him to 226 months of confinement, three years of supervised release, a $2,000 fine, and a $500 special assessment. Jennings appeals his convictions for possession of a firearm in relation to a crime of violence and attempted interference with interstate commerce by extortion.
II.
Jennings first contends that the indictment count for carrying a firearm during and in relation to a crime of violence, in violation of 18 U.S.C. § 924(c), failed to charge an offense because the predicate act of possessing an unregistered pipe bomb does not constitute a “crime of violence.” We review the sufficiency of an indictment
de novo. See United States v. Gabrera-Teran,
18 U.S.C. § 924(c)(3) provides that:
the term “crime of violence” means an offense that is a felony and—
(A) has as an element the use, attempted use, or threatened use of physical forcе against the person or property of another; or
(B) that by its nature, involves a substantial risk that physical force against the person or property of another may be used in the course of committing the offense.
18 U.S.C. § 924(c)(3). The government concedes that the first definition does not apply here, so our only inquiry is whether the ppssession of an unregistered pipe bomb is an offense that “by its nature, involves a substantial risk that physical forсe against the person or property of another may be used in the course of committing the offense.” Id..
In conducting this inquiry, we do not consider any facts specific to Jennings’s case. Using a categorical approach, we ask whether the inherent nature of the offense, possession of an unregistered pipe bomb, is a “crime of violence.”
See, e.g.,
*798
United States v. Delgado-Enriquez,
Contrary to appellant’s argument, however, to qualify as a “crime of violence” an offense need not actually involve violence. Rather, “the statute requires merely that the predicate crime create a substantial risk of the possible use of force.”
United States v. Greer,
We hold that possession of an unregistered pipe bomb, by its very nature, creates a substantial risk of violence. Unlike a handgun, it is not considered sport to hunt or engage in target practice with a pipe bomb.
1
Moreover, it would be quite difficult to protect oneself or one’s family with a pipe bomb. In fact, we cannot conceive of any non-violent or lawful uses for a pipe bomb.
2
See United States v. Dodge,
We are guided to this conclusion by the language of the statute prohibiting the pоssession of an unregistered pipe bomb.
See Taylor v. United States,
Not all firearms must be registered under 26 U.S.C. § 5861(d). Only those firearms must be registered that Congress has found to be inherently dangerous and generally lacking usefulness, except for violent and criminal purposes, such as sawed-off shotguns and hand-grenades.
United States v. Fortes,
As this analysis implies, the primary reason that unregistered possession of these particular weapons is a crime is the virtual inevitability that such possession will result in violence. 4 Accordingly, as possession of a pipe bomb is a “crime of violence,” Jennings’s was properly convicted of possession of a firearm (his .38 revolver) in relation to this “crime of violence.”
III.
Jennings next asserts that the district court erred in allowing his cоnviction under the Hobbs Act, 18 U.S.C. § 1951 (1994)
5
, merely upon a finding that his conduct “affected” interstate commerce. Under the rationale of
United States
v.
Lopez,
First, we address Jennings’s argument thаt the Hobbs Act cannot constitutionally be applied to his single act of attempted extortion against a business. We review constitutional challenges
de novo. See United States v. Rose,
Jennings’s constitutional challenge is foreclosed by our decision in
United States v. Robinson,
[I]n Hobbs Act prosecutions based on local activities that affect interstate commerce, the government need not prove that the effect of an individual defendant’s conduct was substantial. It suffices to show a slight effect in each case, provided that the defendant’s conduct is of a general type which, viewed in the aggregate, affects interstate commerce substantially.
Id.
at 1208. We subsequently explained this analysis to allow a Hobbs Act conviction for activity having a
“de minimus
nexus to interstate commerce, provided that the statute regulates an activity which, through repetition, in aggregate has a substantial effect on interstate commerce.”
United States v. Miles,
Accordingly, under the “aggregation” principle, the interstate commerce nexus is sufficient to uphold a Hobbs Act conviction if Jennings’s actions are of a type that, repeated many times over, would have a “substantial effect” on interstate commerce.
See Robinson,
We hold that attempted extortion of a business, repeated many times throughout the country, would have a substantial effect on interstate commerce. The fact that Jennings was only convicted of attempt to obstruct interstate commerce rather than actual obstruction is incidental. In calculating the impact of his actions for interstate commerce purposes, we assume Jennings completed his goals.
See United States v. Kaplan,
We next consider Jennings’s argument that the district court erred in instructing the jury. Jennings argues that the jury should have been required to find a “substantial effect” on interstate commerce to convict him, rather than being instructed to convict based on merеly “an effect.” Challenges to jury instructions are reviewed to determine whether the court’s charge, as a whole, is a correct statement of the law and clearly instructs jurors on the legal principles at issue.
See United States v. Moreno,
This argument, too, was rejected in
Robinson,
where we called this post
-Lopez
theory “simple and rather elegant ... [but] wrong.”
Robinson,
Finally, we consider Jennings’s contention that there was insufficient evidence to convict him of interference with interstate commerce. Challenges to evidentiary sufficiency arе reviewed in the light most favorable to the verdict, inquiring only whether a rational juror could have found each element of the crime proven beyond a reasonable doubt.
See United States v. Nutall,
Jennings planned to remove Dr. Gardner, her assistants, and her patients from the office. Jennings also planned to call other patients who had appointments later in the day to postpone or cancel their appointments. It is unclear from the reсord how long Jennings anticipated holding his targets hostage, but he did contemplate the activity taking a substantial amount of time. Further, Jennings contemplated killing any hostages who gave him a problem, and expressly authorized his co-conspirators (who all happened to be undercover law enforcement officials) to do the same.
The government asserts that the crime, if completed, would have obstructed Dr. Gardner’s officе from purchasing goods in interstate commerce. Under the “depletion of assets” doctrine developed in past cases, the government asserts, this showing is sufficient to uphold a Hobbs Act conviction.
See Robinson,
The record indicates that Dr. Gardner’s office purchased a substantial amount of its supplies from out-of-state. While the government did not prove that Jennings’s scheme would have, if successful, impaired the office from purchasing supрlies in the future, it need not make such a showing. We infer such obstruction in interstate commerce from a showing that the business “regularly buys goods from out of state.”
Hebert,
We acknowledge that the “asset depletion” theory asserted in
Robinson, Miles,
and
Hebert,
is not identical to the case at bar. Those cases involved Hobbs Act convictions for the actual theft of money from businesses, money which we inferred would havе been used to purchase supplies from out of state.
See Robinson,
The interstate commerce nexus here is slightly more attenuated. The “asset” that would have been “depleted” had Jennings succeeded was not cash on hand but Dr. Gardner and her assistants.
7
Howеver, this distinction is insignificant. The absence of Dr. Gardner and the postponement or cancellation of appointments undoubtedly would have produced diminished funds in the office register and consequently curtailed interstate purchases.
Cf. United States v. Arena,
We recognize that approval of
Robinson
and its progeny has not been unanimous.
9
However, until reconsidered by an
en banc
panel of this Court or by the Supreme Court, it is the law we are bound to follow and apply.
See Macktal v. United States Dep't of Labor,
IV.
Finding his contentions to be without merit, we AFFIRM Jennings’s convictions.
Notes
. We thus distinguish the line of cases, cited by Jennings, where cоurts have held that mere possession of a handgun by a felon is insufficient to qualify as a crime of violence. See,
e.g., United States v. Flennory,
. At oral argument, when asked for an example of a non-violent, non-criminal use for a pipe bomb, counsel for Jennings could only suggest "blowing up something on your own property.” We cannot agree that this is a feasible use for a weapon as imprecise and dangerous as a pipe bomb.
. The types of weapons included in the § 5845 definition of "firearm” include: short-barreled ("sawed-off”) or otherwise modified shotguns, short-barreled rifles, modified rifles, machine guns, silencers, bombs, grenades, powerful rockets and missiles, mines, other powerful explosives, and specialized weapons "from which a shot can be discharged through the energy of an explosive." 26 U.S.C. § 5845.
. Congress added bombs to the list of weapons for which unregistеred possession was a crime in 1968. Congress expanded the scope of the National Firearms Act in this manner because of its “specific declaration and finding that destructive devices (such as bazookas, mortars, antitank guns, bombs, missiles, etc.,) machine guns, short-barreled shotguns, and short-barreled rifles are primarily weapons of war and have no appropriate sporting use or use for personal protection.” See S. Rep. No. 90-1501, at 28 (1968).
.The Hobbs Act provides, in pertinent part:
Whoevеr in any way or degree obstructs, delays, or affects commerce or the movement of any article or commodity in commerce, by robbery or extortion or attempts or conspires to do so, or commits or threatens physical violence to any person or property in furtherance of a plan or purpose to do anything in violation of this section shall be fined under this title or imprisoned not more than twenty years, or both.
18 U.S.C. § 1951(a).
. In Jennings's brief and at oral argument, counsel for Jennings admitted that her Hobbs Act argument was foreclosed by Fifth Circuit precedent and asserted that the issue was presented in the briefs only for possible en banc or Supreme Court review.
. There is no specific evidence in the record to indicate, nor does the government argue, that Jennings planned to steal the cash or supplies from Dr. Gardner's office. Therefore, we assume for purposes of this argument thаt the only “asset” that would have been depleted had Jennings been successful was the removal of the dental staff from the office.
. This case is distinguishable from
United States v. Collins,
.
See, e.g., United States v. Johnson, 194
F.3d 657, 663 (5th Cir.1999) (Garwood, J., concurring);
Miles,
