Justice Ginsburg, delivered the opinion of the Court.
It is a federal crime under 18 U. S. C. § 844(i) (1994 ed., Supp. IV) to damage or destroy, "by means of fire or an explosive, any . . . property used in interstate or foreign commerce or in any activity affecting interstate or foreign commerce." This case presents the question whether arson of an owner-occupied private residence falls within § 844(i)'s compass. Construing the statute's text, we hold that an owner-occupied residence not used for any commercial purpose does not qualify as property "used in" commerce or
I
On February 23, 1998, petitioner Dewey Jones tossed a Molotov cocktail through a window into a home in Fort Wayne, Indiana, owned and occupied by his cousin. No one was injured in the ensuing fire, but the blaze severely damaged the home. A federal grand jury returned a three-count indictment charging Jones with arson, 18 U. S. C. § 844(i) (1994 ed., Supp. IV); using a destructive device during and in relation to a crime of violence (the arson), 18 U. S. C. § 924(c); and making an illegal destructive device, 26 U. S. C. § 5861(f). Jones was tried under that indictment in the Northern District of Indiana and convicted by a jury on all three counts.
Jones unsuccessfully urged, both before the District Court and on appeal to the Seventh Circuit, that § 844(i), when applied to the arson of a private residence, exceeds the authority vested in Congress under the Commerce Clause of the
II
Congress enacted 18 U. S. C. § 844(i) as part of Title XI of the Organized Crime Control Act of 1970, Pub. L. 91-452, § 1102, 84 Stat. 952, "because of the need `to curb the use, transportation, and possession of explosives.' " Russell v.
In support of its argument that § 844(i) reaches the arson of an owner-occupied private residence, the Government relies principally on the breadth of the statutory term "affecting . . . commerce," see Brief for United States 10, 16-17, words that, when unqualified, signal Congress' intent to invoke its full authority under the Commerce Clause. But § 844(i) contains the qualifying words "used in" a commerce-affecting activity. The key word is "used." "Congress did not define the crime described in § 844(i) as the explosion of a building whose damage or destruction might affect interstate commerce . . . ." United States v. Mennuti, 639 F.2d 107, 110 (CA2 1981) (Friendly, J.).
The Government urges that the Fort Wayne, Indiana, residence into which Jones tossed a Molotov cocktail was constantly "used" in at least three "activit[ies] affecting commerce." First, the homeowner "used" the dwelling as collateral to obtain and secure a mortgage from an Oklahoma lender; the lender, in turn, "used" the property as security for the home loan. Second, the homeowner "used" the residence to obtain a casualty insurance policy from a Wisconsin insurer. That policy, the Government points out, safeguarded the interests of the homeowner and the mortgagee. Third, the homeowner "used" the dwelling to receive natural gas from sources outside Indiana. See Brief for United States 19-23.
The Government correctly observes that § 844(i) excludes no particular type of building (it covers "any building"); the provision does, however, require that the building be "used" in an activity affecting commerce. That qualification is most sensibly read to mean active employment for commercial purposes, and not merely a passive, passing, or past connection to commerce. Although "variously defined," the word "use," in legislation as in conversation, ordinarily signifies "active employment." Bailey v. United States, 516 U.S. 137, 143, 145 (1995); see also Asgrow Seed Co. v. Winterboer, 513 U.S. 179, 187 (1995) ("When terms used in a statute are undefined, we give them their ordinary meaning.").
Our decision in Russell does not warrant a less "use"-centered reading of § 844(i). In that case, which involved the arson of property rented out by its owner, see supra, at 853, the Court referred to the recognized distinction between legislation limited to activities "in commerce" and legislation invoking Congress' full power over activity substantially "affecting . . . commerce." 471 U. S., at 859— 860, and n. 4. The Russell opinion went on to observe, however, that "[b]y its terms," § 844(i) applies only to "property that is `used' in an `activity' that affects commerce." Id., at 862. "The rental of real estate," the Court then stated, "is unquestionably such an activity." Ibid.
III
Our reading of § 844(i) is in harmony with the guiding principle that "where a statute is susceptible of two constructions, by one of which grave and doubtful constitutional questions arise and by the other of which such questions are avoided, our duty is to adopt the latter." United States ex rel. Attorney General v. Delaware & Hudson Co., 213 U.S. 366, 408 (1909), quoted in Jones v. United States, 526 U.S. 227, 239 (1999); see also DeBartolo, 485 U. S., at 575; Ashwander v. TVA, 297 U.S. 288, 348 (1936) (Brandeis, J., concurring). In Lopez, this Court invalidated the Gun-Free School Zones Act, former 18 U. S. C. § 922(q) (1988 ed., Supp. V), which made it a federal crime to possess a firearm within
Given the concerns brought to the fore in Lopez, it is appropriate to avoid the constitutional question that would arise were we to read § 844(i) to render the "traditionally local criminal conduct" in which petitioner Jones engaged "a matter for federal enforcement." United States v. Bass, 404 U.S. 336, 350 (1971). Our comprehension of § 844(i) is additionally reinforced by other interpretive guides. We have instructed that "ambiguity concerning the ambit of criminal statutes should be resolved in favor of lenity," Rewis v. United States, 401 U.S. 808, 812 (1971), and that "when choice has to be made between two readings of what conduct Congress has made a crime, it is appropriate, before we choose the harsher alternative, to require that Congress should have spoken in language that is clear and definite," United States v. Universal C. I. T. Credit Corp., 344 U.S. 218, 221-222 (1952). We have cautioned, as well, that "unless Congress conveys its purpose clearly, it will not be deemed to have significantly changed the federal-state balance" in the prosecution of crimes. Bass, 404 U. S., at 349. To read § 844(i) as encompassing the arson of an owneroccupied private home would effect such a change, for arson is a paradigmatic common-law state crime. See generally Poulos, The Metamorphosis of the Law of Arson, 51 Mo. L. Rev. 295 (1986).
IV
We conclude that § 844(i) is not soundly read to make virtually every arson in the country a federal offense. We hold that the provision covers only property currently used in commerce or in an activity affecting commerce. The home owned and occupied by petitioner Jones's cousin was not so used—it was a dwelling place used for everyday family living. As we read § 844(i), Congress left cases of this genre to the law enforcement authorities of the States.
Our holding that § 844(i) does not cover the arson of an owner-occupied dwelling means that Jones's § 844(i) conviction must be vacated. Accordingly, the judgment of the Court of Appeals is reversed, and the case is remanded for further proceedings consistent with this opinion.
Part II of the Court's opinion convincingly explains why its construction of 18 U. S. C. § 844(i) better fits the text and context of the provision than the Government's expansive reading. It also seems appropriate, however, to emphasize the kinship between our well-established presumption against federal pre-emption of state law, see Ray v. Atlantic Richfield Co., 435 U.S. 151, 157 (1978), and our reluctance to "believe Congress intended to authorize federal intervention in local law enforcement in a marginal case such as this." United States v. Altobella, 442 F.2d 310, 316 (CA7 1971). The fact that petitioner received a sentence of 35 years in prison when the maximum penalty for the comparable state offense was only 10 years, Ind. Code §§ 35-43-1—1, 35-50— 2-5 (1993), illustrates how a criminal law like this may effectively displace a policy choice made by the State. Even when Congress has undoubted power to pre-empt local law,
Justice Thomas, with whom Justice Scalia joins, concurring.
In joining the Court's opinion, I express no view on the question whether the federal arson statute, 18 U. S. C. § 844(i) (1994 ed., Supp. IV), as there construed, is constitutional in its application to all buildings used for commercial activities.
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