*366 Historically, the "Ho-Chunk" Tribe occupied portions of what are now several midwestern states. In the 1800's the Tribe entered into treaties with the United States and divided into two branches: the Ho-Chunk Nation of Wisconsin and the Winnebago Tribe of Nebraska. Both are federally-recognized Indian tribes with federal reservations. See 83 Fed. Reg. 4,235 , 4,237, 4,239 (Jan. 30, 2018).

The four appellants in this case-a parent corporation and three of its subsidiaries-are incorporated under the laws of the Winnebago Tribe of Nebraska. Ho-Chunk, Inc., the parent corporation, is the Tribe's wholly-owned economic development arm. Among its wholly-owned subsidiaries are the three corporations who are also parties here. They are involved in the manufacture and distribution of cigarettes. Each corporation's principal place of business is the Tribe's reservation in Winnebago, Nebraska.

Appellant Rock River Manufacturing Company, one of these corporations, manufactures and imports tobacco products, including cigarettes. Rock River sells its products to another subsidiary corporation, HCI Distribution Company, as well as to state-licensed distributors. HCI Distribution resells these products to businesses owned or licensed by other Indian tribes. Woodlands Distribution Company, the third subsidiary corporation, sells tobacco products to off- and on-reservation companies.

In 2016, the federal Bureau of Alcohol, Tobacco, Firearms and Explosives sent letters to Rock River, HCI Distribution, and Woodlands. The letters notified the companies that the Bureau intended to inspect and copy their records of tobacco transactions and asked them to name a mutually-acceptable inspection date within fifteen business days from receipt of the letters.

The companies and their parent responded with a complaint seeking a declaratory judgment that they are not subject to federal recordkeeping laws dealing with the distribution of cigarettes. The district court entered summary judgment against them. Ho-Chunk, Inc. v. Sessions , 253 F.Supp.3d 303 , 304 (D.D.C. 2017). Their appeal presents a question of statutory interpretation-do the federal recordkeeping laws cover these corporations?

ATF, as the Bureau is commonly known, issued its inspection notices pursuant to the Contraband Cigarette Trafficking Act of 1978, as amended. See 18 U.S.C. § 2343 (c). The Act sought to remedy the "problem of organized crime and other large scale operations of interstate cigarette bootlegging and to help provide law enforcement assistance and relief to cities and States." S. Rep. 95-962, at 3 (1978). 1

*367 To this end, "[a]ny person who ships, sells, or distributes any quantity of cigarettes in excess of 10,000 ... in a single transaction ... [must] keep such information as the Attorney General considers appropriate ...." 18 U.S.C. § 2343 (a). This may include identifying information about cigarette purchasers and declarations of the purchasers' purposes in receiving the cigarettes. Id. § 2343(a)(1)-(3).

Rock River, HCI Distribution, and Woodlands claim that they are exempt from the Act's recordkeeping requirements. They are exempt, they say, because the statute and the regulations do not cover wholly-owned corporations of a federally-recognized Indian tribe.

Over the years, the Supreme Court has dealt with issues regarding Indian tribes and their sale of cigarettes. The law, as the Court has developed it, now stands as follows. Indians and Indian tribes may sell untaxed cigarettes on their reservations to tribal members for their personal consumption. See Moe v. Confederated Salish & Kootenai Tribes of the Flathead Reservation , 425 U.S. 463 , 480-81, 96 S.Ct. 1634 , 48 L.Ed.2d 96 (1976). States, however, retain the authority to tax non-Indian customers of Indian cigarette distributors on the reservation. See Washington v. Confederated Tribes of the Colville Indian Reservation , 447 U.S. 134 , 150-51, 100 S.Ct. 2069 , 65 L.Ed.2d 10 (1980). Under Moe and Colville , "a State may require Indian retailers to collect a tax imposed on non-Indian purchasers of cigarettes." Dep't of Taxation & Fin. of N.Y. v. Milhelm Attea & Bros., Inc. , 512 U.S. 61 , 68, 114 S.Ct. 2028 , 129 L.Ed.2d 52 (1994). And a state may require tribal retailers selling cigarettes on the reservation to nonmembers of the tribe "to keep extensive records concerning these transactions." Id. at 71-72 , 114 S.Ct. 2028 .

Although Indian tribes are thus subject to state recordkeeping requirements for cigarette sales, the corporations here claim they are exempt from the federal laws imposing similar requirements. One of their arguments rests on the following reasoning. The federal statute and regulations define "State" as a "State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, or the Virgin Islands." 18 U.S.C. § 2341 (4) ; 27 C.F.R. § 646.143 . These corporations are headquartered on the Tribe's reservation. An Indian reservation is within "Indian country." See 18 U.S.C. § 1151 . The Act's definition of "State" does not mention "Indian country." Therefore the Act's recordkeeping requirements do not apply to these corporations.

The argument suffers from several flaws. The most obvious is that the Act's recordkeeping requirements do not turn on any territorial determination. See 18 U.S.C. § 2343 (a). That these three corporations have their principal place of business on the Tribe's reservation in Nebraska says nothing about whether federal law requires them to keep records. More than that, if the corporations were correct that the Act's regulation of contraband cigarettes does not apply to sales to non-Indians in Indian country, this would not only be senseless but would also contravene decades of settled law upholding enforcement of the Act against individuals and entities operating on reservations. See, e.g. , United States v. Morrison , 686 F.3d 94 , 96 (2d Cir. 2012) ;

*368 Grey Poplars Inc. v. One Million Three Hundred Seventy-One Thousand One Hundred (1,371,100) Assorted Brands of Cigarettes , 282 F.3d 1175 , 1177 (9th Cir. 2002) ; United States v. Baker , 63 F.3d 1478 , 1485-86 (9th Cir. 1995).

Neither the Act nor the implementing regulations contain any language exempting tribal entities operating on Indian reservations from the federal recordkeeping requirements. "Ordinarily, ... an Indian reservation is considered part of the territory of the State." Nevada v. Hicks , 533 U.S. 353 , 361-62, 121 S.Ct. 2304 , 150 L.Ed.2d 398 (2001) (citations and internal quotation marks omitted). The corporate appellants conceded as much at oral argument. The district court gave additional reasons for rejecting the corporations' "Indian country" argument. Ho-Chunk, Inc. , 253 F.Supp.3d at 307-09 . We agree with the district court and deem it unnecessary to repeat the court's reasoning.

The corporations' main argument is that § 2343(a) -the recordkeeping provision-applies only to "[a]ny person" and they are not "persons." They are not "persons," they argue, because they are "tribal instrumentalities," which assumes that a tribal instrumentality-and for that matter, a tribe itself-cannot be a "person." Both assumptions are mistaken.

The cigarette act does not define "person." Therefore, an interpreter of this legislation must consult the Dictionary Act, 1 U.S.C. § 1 , as the Conference Committee on the cigarette act acknowledged, H.R. Rep. No. 95-1778, at 10 (1978) (Conf. Rep.). The Dictionary Act states: "In determining the meaning of any Act of Congress, unless the context indicates otherwise ... the words 'person' and 'whoever' include corporations, companies, associations, firms, partnerships, societies, and joint stock companies, as well as individuals."

This would seem to doom the corporations' we-are-not-a-person argument, regardless whether the Tribe itself is a "person." As to Ho-Chunk, Inc. and its subsidiaries, the obvious progression is this: the Act's § 2343(a) recordkeeping requirements apply to "[a]ny person"; under federal law, "person" includes "corporations"; these appellants are "corporations"; they are therefore "persons" and the Act's recordkeeping requirements apply to them.

The government, relying on San Manuel Indian Bingo & Casino v. NLRB , 475 F.3d 1306 (D.C. Cir. 2007), makes an argument much the same as the one we have just described from the Dictionary Act. The Indian tribe in San Manuel operated an on-reservation casino. The question was whether the tribe itself was a "person" and thus an "employer" within the meaning of the National Labor Relations Act. Section 2(2) of the NLRA defines "employer" to include "any person," with exceptions for the federal government and "any State or political subdivision thereof." 29 U.S.C. § 152 (2). The NLRA defines the term "person" in much the same terms as the Dictionary Act. Id. § 152(1). Our court, agreeing with the National Labor Relations Board, held that the tribe was an "employer" and thus subject to the NLRA. In so holding, the court necessarily decided that the tribe was a "person." 2

*369 If, as in San Manuel , an Indian tribe operating an on-reservation commercial enterprise may itself be considered a "person" subject to federal law, so too may the commercial corporations established under the laws of the Winnebago Tribe. It is no answer to say, as the corporations do, that they are tribal instrumentalities and that the term "person" usually excludes federal, state, and local governments and their agencies. See Vt. Agency of Nat. Res. v. U.S. ex rel. Stevens , 529 U.S. 765 , 780, 120 S.Ct. 1858 , 146 L.Ed.2d 836 (2000). The statute in San Manuel , 29 U.S.C. § 152 (2), explicitly contained such an exclusion, yet our court held that an Indian tribe running a casino was a "person" and thus an "employer." See also supra note 2.

There is another reason why the district court correctly held that Congress did not exempt the corporate appellants from the Act's recordkeeping provision: statutory context. See Vt. Agency , 529 U.S. at 781 , 120 S.Ct. 1858 ; United States v. Persichilli , 608 F.3d 34 , 37 (1st Cir. 2010) ; see also 1 U.S.C. § 1 (statutory terms depart from Dictionary Act defaults if "the context indicates otherwise"). Subsection (a) of § 2343 specifies the recordkeeping requirements applicable to "[a]ny person." The next subsection- § 2343(b) -requires periodic reports to the Attorney General of large cigarette transactions. 3 Subsection (b) applies to "[a]ny person, except for a tribal government" who distributes cigarettes. Assume the corporate appellants in this case are "a tribal government" even though they seem to be exclusively involved in commercial transactions. That would exempt them from subsection (b)'s reporting requirements. But the issue in this case deals with subsection (a)'s recordkeeping requirements. Subsection (a) contains no exception for "a tribal government," let alone for a corporation formed under tribal law and engaged in the cigarette business. As the district court recognized, the exception in (b) for tribal governments would have been unnecessary if "persons" in § 2343 did not include tribes. Ho-Chunk, Inc. , 253 F.Supp.3d at 311 . The district court added: "To the extent the goal was to cut down on cigarette taxation avoidance, it would have made little sense to wholly exempt tribal agencies and instrumentalities from the Act-thus offering cigarette bootlegging organizations a clearly demarcated shelter from enforcement." Id. 4

The corporations also claim that the position of the Bureau of Alcohol, Tobacco, Firearms and Explosives regarding § 2343(a), as set forth in its 2016 inspection letters, is an unexplained and arbitrary departure from agency policy in violation of the Administrative Procedure Act, 5 U.S.C. § 706 (2)(A), and that the Bureau violated the APA when it adopted its position without engaging in notice and comment rulemaking. The premise is that the inspection letters represented a change in the Bureau's position regarding whether the Act applies to the Ho-Chunk corporations. 5 The corporations did not present *370 their APA arguments to the district court before it entered summary judgment and we therefore will not consider them. See, e.g. , Potter v. District of Columbia , 558 F.3d 542 , 547-51 (D.C. Cir. 2009).

We have reviewed and rejected the appellants' other contentions.

Affirmed.