Yankton Sioux Tribe v. Matt Gaffey ( 1999 )


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  •                     United States Court of Appeals
    FOR THE EIGHTH CIRCUIT
    ___________
    No. 98-3893
    ___________
    Yankton Sioux Tribe, and its individual *
    members,                                *
    *
    Appellee,                        *
    *
    United States of America, on its own    *
    behalf and for the benefit of the       *
    Yankton Sioux Tribe,                    *
    *
    Intervenor Plaintiff - Appellee, *
    *
    v.                                   *
    *
    Matt Gaffey, States Attorney of Charles *   Appeals from the United States
    Mix County; Herman Peters, Member       *   District Court for the District of
    of the Charles Mix, South Dakota,       *   South Dakota.
    County Commission; Bruce Bakken,        *
    Member of the Charles Mix, South        *
    Dakota, County Commission; Jack         *
    Soulek, Member of the Charles Mix,      *
    South Dakota, County Commission,        *
    *
    Appellants,                      *
    *
    William Janklow, Governor of South      *
    Dakota; Mark W. Barnett, Attorney       *
    General of South Dakota,                *
    *
    Defendants.                      *
    __________________                      *
    *
    Gary Beeson, Landowner; City of             *
    Dante; City of Geddes; City of Lake         *
    Andes; City of Pickstown; City of           *
    Platte; City of Ravinia; City of            *
    Wagner; Harvey P. Weisser, doing            *
    business as Weisser Oil Co., Inc.,          *
    Individually,                               *
    *
    Amici on behalf of Appellant,         *
    *
    Vine Deloria, Jr.; Philip S. Deloria;       *
    Philip Lane, Sr.; Philip Lane, Jr.; James   *
    Weddell, descendants of Francois            *
    Deloria, Signatory to the Treaty of         *
    1858, and descendants and relatives of      *
    Philip J. Deloria,                          *
    *
    Amici on Behalf of Appellee.          *
    ___________
    No. 98-3894
    ___________
    Yankton Sioux Tribe, and its individual *
    members,                                *
    *
    Appellee,                         *
    *
    United States of America, on its own    *
    behalf and for the benefit of the       *
    Yankton Sioux Tribe,                    *
    *
    Intervenor Plaintiff - Appellee,  *
    *
    v.                                    *
    *
    Matt Gaffey, States Attorney of Charles *
    2
    Mix County; Herman Peters, Member           *
    of the Charles Mix, South Dakota,           *
    County Commission; Bruce Bakken,            *
    Member of the Charles Mix, South            *
    Dakota, County Commission; Jack             *
    Soulek, Member of the Charles Mix,          *
    South Dakota, County Commission,            *
    *
    Defendants,                           *
    *
    William Janklow, Governor of South          *
    Dakota; Mark W. Barnett, Attorney           *
    General of South Dakota,                    *
    *
    Appellants.                            *
    __________________                          *
    *
    Gary Beeson, Landowner; City of             *
    Dante; City of Geddes; City of Lake         *
    Andes; City of Pickstown; City of           *
    Platte; City of Ravinia; City of            *
    Wagner; Harvey P. Weisser, doing            *
    business as Weisser Oil Co., Inc.,          *
    Individually,                               *
    *
    Amici on behalf of Appellant,         *
    *
    Vine Deloria, Jr.; Philip S. Deloria;       *
    Philip Lane, Sr.; Philip Lane, Jr.; James   *
    Weddell, descendants of Francois            *
    Deloria, Signatory to the Treaty of         *
    1858, and descendants and relatives of      *
    Philip J. Deloria,                          *
    *
    Amici on Behalf of Appellee.          *
    ___________
    3
    No. 98-3896
    ___________
    Yankton Sioux Tribe, and its              *
    individual members; Darrell E.            *
    Drapeau, individually, a member of the    *
    Yankton Sioux Tribe,                      *
    *
    Appellees,                         *
    *
    v.                                     *
    *
    Southern Missouri Waste Management *
    District, a non-profit corporation,       *
    *
    Defendant,                         *
    *
    v.                                      *
    *
    State of South Dakota,                    *
    *
    Third Party Defendant - Appellant. *
    __________________                        *
    *
    Gary Beeson, Landowner; City of           *
    Dante; City of Geddes; City of Lake       *
    Andes; City of Pickstown; City of         *
    Platte; City of Ravinia; City of          *
    Wagner; Harvey P. Weisser, doing          *
    business as Weisser Oil Co., Inc.,        *
    Individually,                             *
    *
    Amici on behalf of Appellant,      *
    *
    Vine Deloria, Jr.; Philip S. Deloria;     *
    Philip Lane, Sr.; Philip Lane, Jr.; James *
    Weddell, descendants of Francois          *
    4
    Deloria, Signatory to the Treaty of      *
    1858, and descendants and relatives of   *
    Philip J. Deloria,                       *
    *
    Amici on Behalf of Appellee.      *
    ___________
    No. 98-3900
    ___________
    Yankton Sioux Tribe, and its             *
    individual members; Darrell E.           *
    Drapeau, individually, a member of the   *
    Yankton Sioux Tribe,                     *
    *
    Appellees,                        *
    *
    v.                                     *
    *
    Southern Missouri Waste Management       *
    District, a non-profit corporation,      *
    *
    Appellant,                        *
    *
    v.                                      *
    *
    State of South Dakota,                   *
    *
    Third Party Defendant.              *
    __________________                       *
    *
    Gary Beeson, Landowner; City of          *
    Dante; City of Geddes; City of Lake      *
    Andes; City of Pickstown; City of        *
    Platte; City of Ravinia; City of         *
    Wagner; Harvey P. Weisser, doing         *
    business as Weisser Oil Co., Inc.,       *
    5
    Individually,                              *
    *
    Amici on behalf of Appellant,       *
    *
    Vine Deloria, Jr.; Philip S. Deloria;      *
    Philip Lane, Sr.; Philip Lane, Jr.; James *
    Weddell, descendants of Francois           *
    Deloria, Signatory to the Treaty of        *
    1858, and descendants and relatives of *
    Philip J. Deloria,                         *
    *
    Amici on Behalf of Appellee.        *
    ___________
    Submitted: June 17, 1999
    Filed: August 31, 1999
    ___________
    Before RICHARD S. ARNOLD, MAGILL, and MURPHY, Circuit Judges.
    ___________
    MURPHY, Circuit Judge.
    Before the court are several appeals from judgments concerning lands once
    recognized to be part of the Yankton Sioux Reservation. After the Supreme Court
    decided in South Dakota v. Yankton Sioux Tribe, 
    118 S. Ct. 789
    (1998) (Yankton),
    that the reservation had been diminished at the end of the nineteenth century when the
    Yankton Sioux Tribe (Tribe) ceded land to the United States, that case was remanded
    for further proceedings.1 In the district court the case was then consolidated with an
    1
    See Yankton Sioux Tribe v. Southern Missouri Waste Management Dist., 
    141 F.3d 798
    (8th Cir. 1998). Earlier in the history of the case we upheld the district court's
    previous ruling that the reservation had been neither disestablished nor diminished.
    Yankton Sioux Tribe v. Southern Missouri Waste Management Dist., 
    890 F. Supp. 878
    (D.S.D. 1995), aff'd, 
    99 F.3d 1439
    (8th Cir. 1996), rev'd, 
    118 S. Ct. 789
    (1998).
    6
    action brought by the Tribe to challenge state criminal jurisdiction over acts of tribal
    members on nonceded land within the original reservation boundaries. After an
    evidentiary hearing, the district court granted declaratory relief to the Tribe, its
    individual members, and its chairman Darrell Drapeau, and issued permanent
    injunctions enjoining state officials from exercising criminal jurisdiction over tribal
    members on "allotted or reserved lands." Yankton Sioux Tribe v. Gaffey, 
    14 F. Supp. 2d
    1135, 1160 (D.S.D. 1998). The district court concluded that the reservation has not
    been disestablished and still includes all land within the original exterior reservation
    boundaries that was not ceded to the United States. See 
    id. at 1159.
    The State of
    South Dakota (State), the Southern Missouri Waste Management District (District), and
    the individual named state and county officials appeal.2
    We affirm the conclusion that the reservation was never clearly disestablished,
    but we reverse the conclusion that the original exterior boundaries of the reservation
    continue to have effect and that all nonceded lands remain part of the reservation. We
    also vacate the injunctions issued in the district court and remand the cases for further
    proceedings consistent with this opinion.
    I.
    The original boundaries of the Yankton Sioux Reservation were defined in a
    treaty between the United States and the Yankton Sioux Tribe on April 19, 1858, 11
    Stat. 743 (1858 Treaty), to include approximately 400,000 acres in what is now Charles
    2
    The named defendants in the declaratory judgment action were Matt Gaffey,
    States Attorney of Charles Mix County and four members of the Charles Mix, South
    Dakota, County Commission (collectively "county officials"), as well as William
    Janklow, Governor of South Dakota and Mark W. Barnett, Attorney General of South
    Dakota (collectively "state officials").
    7
    Mix County, South Dakota.3 The Supreme Court held in Yankton that the reservation
    was diminished by land ceded to the United States under an 1892 agreement, later
    ratified by Congress in 1894. Act of Aug. 15, 1894, ch. 290, 28 Stat. 286, 314-19
    (1894 Act). The specific question before the Court in Yankton was whether the Tribe
    continued to have jurisdiction over a portion of the ceded land on which the District
    planned to build a landfill. The Court focused its discussion on that issue, holding
    unanimously that the Yankton Sioux Reservation had been diminished by the 1894 Act,
    at least to the extent of the tracts ceded to the United States, and that the State has
    primary jurisdiction over all ceded lands including the waste site. See 
    Yankton, 118 S. Ct. at 805
    .
    A.
    The district court held an evidentiary hearing after Yankton was remanded and
    consolidated with the second case, and later ruled that the Yankton Sioux Reservation
    had not been disestablished and that it had only been diminished to the extent of the
    ceded lands. Yankton Sioux Tribe v. Gaffey, 
    14 F. Supp. 2d
    1135 (D.S.D. 1998). The
    court noted that nothing in the explicit language of the 1892 agreement supports
    disestablishment, but that several articles support the conclusion that a diminished
    reservation remains intact. 
    Id. at 1149-56.
    It also referred to the reports of the council
    3
    The reservation was later surveyed and found to comprise 430,405 acres. See
    Letter from the Commissioner of Indian Affairs to the Secretary of the Interior (Dec.
    9, 1983), reprinted in, S. Exec. Doc. No. 27, 53d Cong., 2d Sess., 1, 5 (1894) (1894
    Commissioner Letter). It is estimated that under the Dawes Act, 167,325 acres were
    allotted and patented, and that an additional 95,000 acres were allotted after passage
    of the 1891 Act, leaving 168,000 acres of unallotted lands to be ceded through the 1894
    Act. See 
    id. The figures
    from the 1894 Commissioner Letter have been used by the
    parties throughout this litigation. Nevertheless, we note that the Court of Claims found
    in 1980 that the Yankton Sioux had ceded 201,110 unallotted acres through the 1894
    Act. Yankton Sioux Tribe v. United States, 
    623 F.2d 159
    , 184 (Ct. Cl. 1980).
    8
    meetings with the Tribe, which do not discuss boundary changes or relinquishment of
    the reservation, but indicate that the 1892 agreement "memoralized only the consent of
    the Tribe to sell the surplus lands." 
    Id. at 1145.
    The efforts to have the tribal members
    live close to white settlers were not intended to eliminate the reservation, but to help
    the Indians adapt to changed conditions. 
    Id. at 1146-47.
    The Indians could have
    concluded from the representations made by the government negotiators that they
    would retain independent powers of self government over their lands. 
    Id. at 1147.
    The
    district court held that the Yankton Sioux Reservation consists of all nonceded land
    "within the original exterior 1858 treaty boundaries," including those parcels now
    owned by non Indians, as well as Indian owned land and the land reserved from sale
    in the 1892 agreement for agency, school, and other tribal purposes. 
    Id. at 1159.
    It
    concluded that primary criminal and civil jurisdiction over these lands belongs to the
    Tribe and the United States. 
    Id. The court
    then issued declaratory judgments and
    enjoined state and county officials from exercising criminal law enforcement
    jurisdiction over tribal members alleged to have committed crimes on reservation land.
    
    Id. at 1159-60.
    The State, the District, and the individual state and county officials appealed
    from these judgments in four separate appeals which have been consolidated by this
    court. A motion to expedite the appeals was also granted.4 The four groups of
    4
    Several other motions have been filed. The County has moved to have the
    briefs to the Supreme Court lodged with the clerk. The Supreme Court briefs were
    made part of the record in the district court and are available online. The motion is
    denied since the briefs are already available. The Tribe and the United States have
    moved to strike portions of the District's brief and to strike the amicus briefs of Gary
    Beeson and the Cities of Dante, Geddes, Lake Andes, Pickstown, Platte, Ravinia, and
    Wagner (collectively Cities). In addition, the Tribe has moved to strike the amicus
    brief of Harvey P. Weisser. All the motions to strike allege that the challenged briefs
    refer to documents which are not part of the record on appeal and thus violate Fed. R.
    App. P. 10(a). With the exception of the affidavits of Jonelle J. Drapeau and Ed
    Zylstra, submitted as addenda to the amicus brief of the Cities, the challenged
    9
    appellants all present complementary arguments; they will be referred to collectively
    as "the State" when their arguments do not differ. The United States offers numerous
    arguments supportive of the Tribe's position; both appellees will be referred to
    collectively as "the Tribe" except where their arguments diverge. Each side basically
    argues that it is entitled to win on all issues left open by the Supreme Court in Yankton.
    The contentions between them primarily involve questions of law which we review de
    novo, although any factual findings are reviewed for clear error. See Fed. R. Civ. P.
    52(a).
    The State asserts that the 1894 Act disestablished the Yankton Sioux
    Reservation and that the only remaining Indian country within the original boundaries
    are "Indian allotments, the Indian titles to which have not been extinguished." 18
    U.S.C. § 1151(c). It claims that the Supreme Court held in Yankton that the
    reservation boundaries did not remain intact and that it also implied that DeCoteau v.
    District County Court, 
    420 U.S. 425
    (1975) (finding the Lake Traverse Reservation
    completely disestablished), controls the outcome here. The State interprets the text of
    the 1894 Act and its legislative history as illustrating the parties' intent to eliminate the
    reservation, and it finds further support for this position in the subsequent treatment of
    the area. It argues that immediately following the 1894 Act the Tribe itself did not hold
    any land in common, and the State's exercise of jurisdiction over the area has led
    landowners to develop reasonable expectations that their lands are not Indian country.
    The Tribe argues that the district court correctly ruled that all the nonceded land
    within the original exterior reservation boundaries constitutes the present Yankton
    references do not deal for the first time with key factual material about which the
    opposing parties were unaware. The motions to strike portions of the District's brief
    and portions of the Weisser and Beeson briefs are denied. The motions to strike the
    Cities' brief are granted only to the extent that they seek to strike the Drapeau and
    Zylstra affidavits; these affidavits are stricken and have not been considered.
    10
    Sioux Reservation.5 The Supreme Court finding of diminishment in Yankton does not
    mean that the reservation boundaries did not continue as before, and it cites in support
    the Tenth Circuit's decision in Ute Indian Tribe v. Utah, 
    114 F.3d 1513
    (10th Cir.
    1997), cert. denied, 
    118 S. Ct. 1034
    (1998). The Tribe argues that DeCoteau does not
    control because each agreement and treaty with an Indian tribe is unique and must be
    examined in light of the circumstances surrounding its passage. See Minnesota v. Mille
    Lacs Band of Chippewa Indians, 
    119 S. Ct. 1187
    , 1203 (1999). It contends that the
    required clear statement of congressional intent to disestablish the reservation cannot
    be found in the text of the 1894 Act, the legislative history, or the historical
    circumstances surrounding its passage. It argues instead that these documents show
    that Congress and the parties who negotiated the agreement intended all the nonceded
    land to retain its reservation status.
    B.
    The Yankton Court explicitly limited the scope of its holding to the status of the
    ceded lands. Those "surplus" lands were intended by the 1892 agreement to be sold
    to white settlers, but a small amount of unallotted land was reserved from sale for use
    by the federal government. This land was returned to the Tribe in 1929 and remains
    under its control. See Act of February 13, 1929, ch. 183, 45 Stat. 1167. The Supreme
    Court refrained from going beyond what was necessary for it to decide in Yankton, and
    it did not determine issues of current jurisdiction over the nonceded lands which were
    reserved from sale or were originally allotted to individual tribal members. See
    
    Yankton, 118 S. Ct. at 805
    .
    5
    The district court observed that the Tribe's Constitution as amended in 1990
    claimed jurisdiction "extending to the original exterior 1858 boundaries." Yankton
    Sioux Tribe v. Gaffey, 
    14 F. Supp. 2d
    at 1157. But see 
    Yankton, 118 S. Ct. at 804-05
    (quoting the Constitution drafted in 1932 and amended in 1962).
    11
    Allotment is a term of art in Indian law. It refers to the distribution to individual
    Indians of property rights to specific parcels of reservation. See Affiliated Ute Citizens
    v. United States, 
    406 U.S. 128
    , 142 (1972). The rights of use and occupancy to these
    lands were initially held in common by the Tribe, and the federal allotment policy
    sought to advance assimilation of the Indians by promoting its prevailing concept of
    individual land ownership. The practice of allotting reservation land began with the
    1887 passage of the General Allotment Act (Dawes Act), ch. 119, 24 Stat. 388 (1887)
    (codified as amended at 25 U.S.C. § 331). Under the Dawes Act individual tribal
    members received patents for allotments of reservation land in parcels of up to 160
    acres, to be held in trust by the federal government for twenty five years. At the end
    of the trust period the United States would convey the allotment in fee to the individual
    allottee, who would then be subject to the civil and criminal laws of the State or
    Territory in which he resided. 
    Id. at 389-90.
    At the time there was increasing pressure
    for western land for white settlers, and the Dawes Act provided that the Secretary of
    the Interior could negotiate with an Indian tribe to purchase all unallotted lands. 
    Id. The act
    was thus a two pronged effort to open up lands for white settlement and to
    encourage assimilation of the Indians. It was considered a critical element in
    assimilation because the Indian concept of tribal control over land was fundamentally
    different from the European American concept of individual land ownership. See Felix
    Cohen, Handbook of Federal Indian Law 131-32 (1982 ed.).
    Approximately three-fifths of the Yankton Sioux Reservation was allotted under
    the Dawes Act and an act of February 28, 1891, ch. 383, 26 Stat. 794 (amending and
    extending the Dawes Act). Although the trust period was initially set at twenty five
    years, it was terminated early for some allotments and extended for others. At least
    eighty five percent of the land allotted on the Yankton Sioux Reservation eventually
    passed out of trust status; most of this land was sold in fee to non Indians. The
    allotment policy was later repudiated by the passage of the Indian Reorganization Act
    in 1934, which prohibited further allotment of reservation land and indefinitely
    extended the trust period for the remaining trust lands. Indian Reorganization Act, ch.
    12
    576, 48 Stat. 984 (1934) (codified as amended at 25 U.S.C. §§ 461-77). The record
    is far from crystal clear about the specific lands remaining in trust on the Yankton
    Sioux Reservation, but it appears such land is interspersed in a checkerboard pattern
    with ceded lands and lands which have passed out of trust status and are now owned
    in fee.
    The land ceded to the United States under the 1894 Act was subsequently sold
    to homesteaders, but the lands allotted to individual Indians continued to be held by the
    United States in trust for them. Many of these parcels soon lost their trust status. The
    Burke Act, ch. 2348, 34 Stat. 182 (1906) (codified at 25 U.S.C. § 349), permitted the
    government to take certain allotted lands out of trust status before the twenty five year
    time period expired and to grant the individual Indian allottees unrestricted fee title to
    the land. In addition, the trust period on lands which had been allotted within a few
    years of the passage of the Dawes Act in 1887 began to expire in the first part of the
    twentieth century. At that time it was understood that when an allotment passed out
    of trust status and the allottee received the land in fee, he also became subject to the
    civil and criminal laws of the State, see Dawes Act, 24 Stat. at 389-90, and could then
    sell his land to non Indians if he chose.
    As federal policy began shifting away from allotment, the federal government
    acted to protect the trust status of the remaining allotments which had not yet lost that
    status. In 1916, an executive order was issued extending the trust period on all but
    approximately 150 of the parcels still held in trust on the Yankton Sioux Reservation.
    Exec. Order No. 2363, Apr. 20, 1916. The trust period for these allotments was
    extended again in 1926 and 1929, Exec. Order No. 4406, Mar. 30, 1926; Exec. Order
    No. 5173, Aug. 9. 1929, and then indefinitely in 1934 by the Indian Reorganization
    Act, § 2, ch. 576, 48 Stat. 984, 984 (1934) (codified at 25 U.S.C. § 462). As a result
    of this history, the majority of residents in many areas of the original Yankton Sioux
    13
    Reservation are non Indian.6 See U.S. Dept. of Commerce, Census Bureau, 1990
    Census of Population, General Population Characteristics, South Dakota 29 tbl. 13
    (1990 Census).
    These appeals concern the undetermined current status of the 262,000 acres
    originally allotted to tribal members, some of which remain in trust, but the bulk of
    which have lost their trust status and are owned in fee by non Indians. The Supreme
    Court explained in Yankton that "[t]he conflicting understandings about the status of
    the reservation, together with the fact that the Tribe continues to own land in common,
    caution us . . . to limit our holding to the narrow question presented: whether unallotted,
    ceded lands were severed from the reservation." 
    Id. It answered
    that question by
    holding that the ceded lands were severed and the reservation diminished to that extent.
    
    Id. We are
    called on now to address questions intentionally left open in
    Yankton—whether the Yankton Sioux Reservation was disestablished, and if not,
    whether the reservation has been diminished beyond the nonceded lands.
    C.
    Although the terms "diminished" and "disestablished" have at times been used
    interchangeably, disestablishment generally refers to the relatively rare elimination of
    a reservation while diminishment commonly refers to the reduction in size of a
    reservation. Compare DeCoteau, 
    420 U.S. 425
    ; with Rosebud Sioux Tribe v. Kneip,
    6
    According to the 1990 Census, the overall area was approximately two-thirds
    non Indian, and although the tribal presence in the area has been increasing since the
    Fort Randall Casino was built, see 
    Yankton, 118 S. Ct. at 804
    , it appears that non
    Indians own the bulk of the land within the original reservation boundaries.
    Municipalities such as Lake Andes and Wagner, for example, have non Indian
    majorities even though they are partially located on lands originally allotted to
    individual Yankton tribal members. The Tribe has apparently recently purchased
    additional land in the area and has petitioned the United States to take it into trust.
    14
    
    430 U.S. 584
    (1977); see also Yankton Sioux Tribe v. Southern Missouri Waste
    Management Dist., 
    99 F.3d 1439
    , 1443 n.4 (8th Cir. 1996). A finding of diminishment
    generally suggests that a discrete, easily identifiable parcel of land has been removed
    from reservation status. See, e.g., Rosebud Sioux 
    Tribe, 430 U.S. at 615
    . The 168,000
    acres by which the reservation was found diminished in Yankton are not contiguous,
    however, and no single boundary line can encompass these lands.
    The question here is one of jurisdiction, that is to what extent the Tribe retains
    jurisdiction over any nonceded land within the original reservation boundaries.
    Congress clarified tribal jurisdiction by statute in 1948. For the Tribe to have
    jurisdiction over any land under the current statute it must qualify as Indian country
    pursuant to 18 U.S.C. § 1151. The statute defines Indian country to include all
    reservation land (§ 1151(a)), dependent Indian communities (§ 1151(b)), and allotments
    "the Indian titles to which have not been extinguished" (§ 1151(c)). If a reservation
    exists, the Tribe maintains jurisdiction over all land within its limits, § 1151(a),7 but if
    there is no reservation, the State has primary jurisdiction over all land except allotments
    which continue to be held in trust, § 1151(c); see also, Alaska v. Native Village of
    Venetie, 
    118 S. Ct. 948
    , 953 (1998).
    The parties agree that the Tribe has jurisdiction over allotted lands still held in
    trust by the federal government. The State, the District, and the individual state and
    county officials assert, however, that this jurisdiction falls under § 1151(c) and that no
    other lands within the original 1858 boundaries have retained their status as Indian
    7
    It is undisputed that there are broad areas over which the Tribe cannot have
    exclusive jurisdiction regardless of territorial jurisdiction. For example, tribes do not
    have criminal jurisdiction over non Indians, see Oliphant v. Suquamish Indian Tribe,
    
    435 U.S. 191
    , 195 (1978), or authority to regulate activities of nonmembers which do
    not affect tribal welfare and self-government unless the nonmembers have entered into
    consensual relations with the Tribe, see Montana v. United States, 
    450 U.S. 544
    , 563-
    67 (1981).
    15
    country under § 1151(a) because the reservation has been completely disestablished.
    The Tribe and the United States argue that the district court correctly ruled that the
    original exterior reservation boundaries retain effect and that all nonceded land within
    those boundaries constitutes the Yankton Sioux Reservation.
    II.
    A.
    The heart of the matter involves whether Congress intended to disestablish the
    Yankton Sioux Reservation when on August 15, 1894 it finally ratified the 1892
    agreement ceding certain tribal lands to the United States, see 28 Stat. at 314-20, or if
    not, whether it intended to diminish the reservation beyond the ceded lands. The 1892
    agreement was the product of protracted negotiations between twenty four tribal
    representatives and the members of the Yankton Indian Commission (the
    Commissioners) who were appointed to procure the sale of the unallotted lands. The
    negotiations took place through a series of councils held from October through
    December of 1892. Although the immediate objective of the negotiations was the
    purchase of the unallotted lands, the Commissioners viewed this purchase as a step in
    the larger process of encouraging complete assimilation.
    Commissioner Cole outlined the Commission's mission to the tribal
    representatives at the first council meeting. He explained that "The Great White father
    has sent us here to treat with you. He wants to give you a chance to sell your surplus
    lands . . . . He does not want you to sell your homes that he has allotted to you. He
    wants you to keep your homes forever." Council of the Yankton Indians (Oct. 8, 1892),
    transcribed in S. Exec. Doc. 27, 53d Cong., 2d Sess., at 49. Later in the negotiations,
    Commissioner Cole also encouraged the Tribe to adapt to western influences. He
    argued that the Tribe had no choice but to sell the unallotted lands, declaring: "The tide
    of civilization is as resistless as the tide of the ocean, and you have no choice but to
    16
    accept it and live according to its methods or be destroyed by it. To accept it requires
    the sale of these surplus lands and the opening of this reservation to white settlement."
    Council of the Yankton Indians (Dec. 17, 1892), transcribed in S. Exec. Doc. No. 27,
    at 81.
    The Tribe proved reluctant to accept the offer to purchase its surplus lands. The
    Commission's reports show its work was made difficult by the Indians' distrust of the
    federal government and by factional divisions within the Tribe. See Report of the
    Yankton Indian Commission (March 31, 1893), reprinted in S. Exec. Doc. No. 27, at
    7-25 (hereinafter Report). Some tribal members favored the sale and focused their
    energies on obtaining the highest possible price for the land, while others expressed
    strong opposition to any sale of tribal lands. See 
    id. at 8-11.
    Key issues in the
    negotiations included the price to be paid for the lands, the payment of money due to
    individual Indians who had served as scouts for the United States, the continued
    payment of annuities pursuant to the 1858 Treaty, and the exclusion of alcohol from the
    ceded area. See 
    id. at 12-21.
    As the Commission reported: "Careful inquiry into the
    conditions and requirements of these Indians soon revealed to us the fact that the
    purchase of the surplus land was but a small part of our mission and of minor
    importance to both the Indians and the Government, the provisions connected therewith
    for the future welfare of the Indians being of greater importance to them and to the
    Government than the sale of their surplus lands." 
    Id. at 17.
    In December of 1892, the Commission finally reached an agreement with the
    Tribe whereby it agreed in Articles I and II to "cede, sell, relinquish, and convey to the
    United States all their claim, right, title, and interest in and to all the unallotted lands
    within the limits of the reservation" for $600,000. 28 Stat. at 314-15. Article VIII
    provided that the portions of the ceded land currently occupied by the United States for
    "agency, schools, and other purposes" would be reserved from sale to settlers. 28 Stat.
    at 316. Article XVIII stated that the agreement did not abrogate the Tribe's rights under
    the 1858 treaty, 28 Stat. at 318, but this language pertained only to the right to receive
    17
    annuities, not to the reservation boundaries. See 
    Yankton, 118 S. Ct. at 799
    . Several
    other sections of the agreement are relevant to these appeals, but many are not.8
    By 1893 the Commissioners had collected the signatures required to show
    endorsement of the agreement by a majority of the adult male members of the Tribe.
    Congressional action to ratify the agreement was delayed, however, by the need to
    investigate allegations of fraud in the procurement of signatures. Congress finally
    ratified the agreement on August 15, 1894, along with two other similar surplus land
    sale agreements. 28 Stat. at 314-20. The 1894 Act incorporated the entire 1892
    agreement, appropriated necessary funds, prescribed a punishment for violating the
    liquor prohibition, and reserved some sections for common school purposes. 
    Id. B. Our
    starting point in analyzing the 1894 Act is the Supreme Court's Yankton
    decision, which each side not surprisingly interprets in its own favor. The State asserts
    that Yankton provides an easy answer to the questions before the court because it shows
    that the reservation status of all land within the original boundaries has been lost.
    8
    Articles VII, IX-XVI, and XIX-XX have little bearing on the issues here.
    Article VII provided for gifts of gold pieces to tribal members. 28 Stat. at 316. Article
    IX allowed uncultivated allotted land to be leased. 
    Id. Article X
    allowed religious
    societies to purchase ceded land on which they were operating. 
    Id. at 316-17.
    Article
    XII provided that the money paid under the agreement was not subject to claims by
    creditors. 
    Id. at 317.
    Article XIII fixed the status of mixed bloods. 
    Id. Article X
    IV
    required the government to complete the allotment process as soon as possible. 
    Id. Article X
    V settled the claims of the Yankton scouts who had not been paid for their
    services. 
    Id. Article X
    VI settled the Tribe's claim to the Pipestone Reservation. 
    Id. at 317-18.
    Article XIX required a copy of the agreement to be placed in the Yankton
    "Agreement Book." 
    Id. Article X
    X bound the parties upon ratification by Congress.
    
    Id. 18 Because
    the Court relied on DeCoteau, 
    420 U.S. 425
    , for the proposition that certain
    language in the 1894 Act was precisely suited to terminating reservation status, and
    because DeCoteau had found the Lake Traverse Reservation completely disestablished,
    it necessarily follows that the 1894 Act similarly completely disestablished the Yankton
    Sioux Reservation. In contrast, the Tribe distinguishes DeCoteau and claims that
    Yankton's holding of diminishment does not mean the reservation has been
    disestablished or its exterior boundaries changed.
    Justice O'Connor, writing for the unanimous Yankton Court, articulated its
    precise holding as follows:
    In sum, we hold that Congress diminished the Yankton Sioux Reservation
    in the 1894 Act, that the unallotted tracts [which were ceded to the United
    States through that Act] no longer constitute Indian country, and thus that
    the State has primary jurisdiction over the waste site and other lands ceded
    under the Act.
    
    Yankton, 118 S. Ct. at 805
    . The Court explicitly declined to decide whether or not the
    1894 Act altered the status of the nonceded lands. As Justice O'Connor explained,
    "[w]e need not determine whether Congress disestablished the reservation altogether in
    order to resolve this case, and accordingly decline to do so." 
    Id. Whether or
    not other
    land within the original reservation boundaries retained its reservation status thus
    remained an open question.
    Although the Court used DeCoteau in reaching its conclusion of diminishment,
    the Yankton holding was explicitly more limited than that in the earlier case. In
    DeCoteau, the Supreme Court analyzed the circumstances surrounding the ratification
    and the text of an agreement ceding certain lands on the Lake Traverse Reservation to
    the United States and held that the reservation there had been completely disestablished.
    
    DeCoteau, 420 U.S. at 427
    . The background of the Lake Traverse agreement was very
    19
    different from that of the 1894 Act, however, because the tribal members there had
    expressed their clear desire to terminate their reservation. See 
    DeCoteau, 420 U.S. at 432
    . In exchange they negotiated allotments for each individual, including married
    women. See Act of March 3, 1891, ch. 543, 26 Stat. 989, 1037-38. The circumstances
    surrounding the negotiation of the 1892 agreement with the Yankton Sioux and the
    difficulty in obtaining tribal votes to ratify it are significantly different, and there was no
    expression by the Indians of an intent to eliminate their reservation. Even more
    important, the content and wording of the agreements are very different, aside from the
    particular cession language the Supreme Court compared in Yankton. Compare 26 Stat.
    1036-38, with 28 Stat. 314-18.
    It is well established that similar treaty language does not necessarily have the
    same effect when dealing with separate agreements. Justice O'Connor writing for the
    Court in Minnesota v. Mille Lacs Band of Chippewa Indians, 
    119 S. Ct. 1187
    , 1203
    (1999), warned against reaching this conclusion.
    The . . . argument that similar language in two Treaties involving different
    partes has precisely the same meaning reveals a fundamental
    misunderstanding of basic principles of treaty construction. . . . Th[e]
    review of history and the negotiations of the agreement is central to the
    interpretation of treaties.
    Context has been found to play a similarly important role in interpreting the language
    of the surplus land acts.9 See Solem v. Bartlett, 
    465 U.S. 463
    , 469 (1984). The
    9
    Although in 1871, Congress terminated treaty making with Indian tribes, the
    United States continued to negotiate agreements with them in much the same manner
    as it had negotiated treaties. See Felix S. Cohen, Handbook of Federal Indian Law
    127-28 (1982 ed.). The 1892 agreement itself was also sometimes referred to as a
    "treaty." See, e.g., S. Exec. Doc. No. 27, 53rd Cong., 2d Sess. at 48 (statement of
    Commissioner Cole to tribal negotiations); 1894 Commissioner Letter at 5 (letter from
    20
    Commissioners negotiating on behalf of the United States told the Yankton tribal
    representatives that "[The Great White Father] wants you to keep your homes forever.
    He only wants you to sell your surplus lands for which you have no use." Council of the
    Yankton Indians (Oct. 8, 1892), transcribed in S. Exec. Doc. 27, 53d Cong., 2d Sess.,
    at 49. In light of the significant contextual differences, we cannot assume that the
    Court's citation to DeCoteau means that that case controls the issues raised here.
    The Yankton Court did make a number of explicit references to the status of the
    reservation boundaries. The Court found the 1894 Act distinguishable from those acts
    which it "has interpreted as maintaining reservation boundaries." 
    Yankton, 118 S. Ct. at 799
    . The question before it was described as whether the 1894 Act "diminished the
    boundaries" of the reservation. 
    Id. at 793.
    The Court distinguished situations in which
    states acquired primary jurisdiction over opened lands and "thereby diminished the
    reservation boundaries" from those in which the entire opened area remained Indian
    country even though non Indians were able to purchase land. 
    Id. at 797-98
    (citations
    omitted). In the Commission reports it found evidence that the 1894 Act involved
    alteration of "the reservation's character" and "a reconception of the reservation." 
    Id. at 802.
    Some of the language was "reminiscent" of that used for the diminished Unitah
    reservation. 
    Id. ("Congress would
    'pull up the nails' holding down the outside
    boundary" of the reservation) (citation omitted). The Court went on to hold that the
    savings clause of Article XVIII "pertains to the continuance of annuities, not the 1858
    borders." 
    Id. at 800
    (emphasis added). These references indicate the Court's
    understanding that the 1858 reservation boundaries did not remain intact following
    passage of the 1894 Act.
    The Tribe is able to identify only one reservation which apparently continues to
    have its original boundaries even though some of the land within the boundaries has lost
    its reservation status—the Unitah Valley Reservation. The peculiar procedural history
    Commissioner of Indian Affairs referred to the Secretary of the Interior).
    21
    of the litigation involving that reservation does not suggest that it is precedent for
    maintenance of the original exterior borders of the Yankton Sioux Reservation. Long
    after the Tenth Circuit held that the Unitah Valley Reservation had been neither
    disestablished nor diminished, Ute Indian Tribe v. Utah, 
    773 F.2d 1087
    (10th Cir. 1985)
    (en banc), the Supreme Court decided in a different case that the reservation had been
    diminished, Hagen v. Utah, 
    510 U.S. 399
    (1994). The Tenth Circuit then modified its
    Ute decision to the extent it was in direct conflict with Hagen, holding that the ceded
    lands did not retain reservation status, but it did not change its position regarding the
    status of the other lands within the original reservation boundaries. Ute Indian Tribe v.
    Utah, 
    114 F.3d 1513
    , 1520 (10th Cir. 1997). The Tenth Circuit indicated that the
    reason it went no further in its 1997 decision was because of concern for finality in light
    of years of reliance on its earlier holding. See 
    id. at 1524,
    1527.
    Based on our interpretation of what the Court said in Yankton, the lack of
    controlling precedent to suggest the original reservation boundaries can be maintained
    despite the extent of the diminishment, and the record before the court which we discuss
    below, we conclude that the original exterior boundaries of the Yankton Sioux
    Reservation do not serve to separate Indian country from areas under primary State
    jurisdiction.
    C.
    Congressional intent is the touchstone for analyzing whether the 1894 Act altered
    the status of the nonceded lands. See Rosebud Sioux 
    Tribe, 430 U.S. at 586
    . After land
    is set aside for an Indian reservation, it retains that status until Congress explicitly
    indicates otherwise. See 
    Solem, 465 U.S. at 470
    . Intent to diminish or disestablish a
    reservation must be "clear and plain." United States v. Dion, 
    476 U.S. 734
    , 738 (1986).
    Such intent must be "expressed on the face of the Act or be clear from the surrounding
    circumstances and legislative history." Mattz v. Arnett, 
    412 U.S. 481
    , 505 (1973).
    Whether Congress intended to disestablish the reservation completely, or whether it
    22
    intended all or some of the nonceded land to retain its reservation status is complicated
    by the fact that modern distinctions between different categories of Indian country were
    not recognized by nineteenth century legislators who had a different understanding of
    the requirements for land to be classified as reservation land and/or Indian country.
    As mentioned earlier, three different categories of land currently qualify as Indian
    country:
    (a) all land within the limits of any Indian reservation under the jurisdiction
    of the United States Government, notwithstanding the issuance of any
    patent, and, including rights- of-way running through the reservation, (b)
    all dependent Indian communities within the borders of the United States
    whether within the original or subsequently acquired territory thereof, and
    whether within or without the limits of a state, and (c) all Indian
    allotments, the Indian titles to which have not been extinguished, including
    rights-of-way running through the same.
    18 U.S.C. § 1151. This definition of Indian country was codified in 1948, and its key
    provisions have remained unchanged since that time. The State places great emphasis
    on the distinction this definition makes between land that is Indian country because it
    is part of a reservation, § 1151(a), and land which qualifies as Indian country under
    § 1151(c) because of its allotment status. An Indian allotment may be either a parcel
    held in trust by the federal government for the benefit of an Indian (a trust allotment) or
    a parcel owned by an Indian subject to a restriction on alienation in favor of the United
    States (a restricted allotment). See United States v. Stands, 
    105 F.3d 1565
    , 1571-72
    (8th Cir. 1997). Under § 1151(c) both types of allotments are Indian country regardless
    of whether they are on or off an Indian reservation. 18 U.S.C. § 1151(c); see also
    Alaska v. Native Village of Venetie, 
    118 S. Ct. 948
    , 953 (1998). In contrast, lands that
    are owned in fee without such restrictions on alienation do not qualify as Indian country
    23
    under § 1151(c); but they may be classified as Indian country under § 1151(a) if they
    are within the boundaries of an Indian reservation. See 
    Stands, 105 F.3d at 1572
    .
    The parties all agree that lands originally allotted to individual tribal members that
    are still held in trust by the United States are Indian country within the meaning of
    § 1151(c), but they dispute whether the Yankton Sioux reservation still exists and
    whether any nonceded lands fit the current understanding of Indian country in § 1151(a).
    The State argues that although Congress intended some lands to retain their status as
    Indian country because of their status as allotments, it did not intend to maintain any
    reservation. The Tribe, on the other hand argues that the 1894 Act only altered the
    status of the ceded lands and that the reservation status of all other lands within the
    original 1858 boundaries was not changed.
    Members of Congress in 1894 operated on a set of assumptions which are in
    tension with the modern definitions of Indian country, and the intentions of that Congress
    and of the 1892 negotiating parties are what we must look to here. At the turn of the
    century, Indian lands were defined to include "only those lands in which the Indians held
    some form of property interest: trust lands; individual allotments, and, to a more limited
    degree, opened lands that had not yet been claimed by non-Indians." 
    Solem, 465 U.S. at 468
    . Lands to which the Indians did not have any property rights were never
    considered Indian country. The notion of a reservation as a piece of land, all of which
    is Indian country regardless of who owns it, would have thus been quite foreign.
    Congress in the late nineteenth century was operating on the assumption that reservations
    would soon cease to exist, see id, and on the belief that allotting lands, and purchasing
    those left unallotted, were steps in the process of eventually dismantling the reservation
    system. See United States v. Southern Pacific Transp. Co., 
    543 F.2d 676
    , 695 (9th Cir.
    1976). The 1894 Congress would have felt little pressure to specify how far a given act
    went toward diminishing a reservation and would have had no reason to distinguish
    between reservation land and other types of Indian country. See 
    id. 24 With
    this background in mind, see 
    Yankton, 118 S. Ct. at 798
    , we consider
    whether the 1894 Congress intended to eliminate the Yankton reservation entirely or
    whether it intended to maintain the reservation status of some or all of the nonceded land.
    We apply the standard rules of interpretation for surplus land act cases. Each act must
    be analyzed individually, its effect depending on the language used and the circumstances
    of its passage. See 
    Solem, 465 U.S. at 469
    . The statutory language provides the most
    probative evidence of congressional intent. See Rosebud Sioux 
    Tribe, 430 U.S. at 586
    .
    Also relevant are the legislative history of the act and its historical context, including
    events surrounding the statute's passage which shed light on the contemporaneous
    understanding of it. See Hagen v. Utah, 
    510 U.S. 399
    , 411 (1994). Treaties with Indians
    are also interpreted to give effect to the terms as the Indians themselves would have
    understood them. See Mille Lacs Band of Chippewa 
    Indians, 119 S. Ct. at 1200
    . To a
    lesser extent, the subsequent treatment of the area is also relevant. See Yankton, 118 S.
    Ct. at 798. Under certain circumstances the "justifiable expectations" of the parties are
    considered, see Rosebud Sioux 
    Tribe, 430 U.S. at 605
    , as well as changes in the
    demographics of the area, see 
    Hagen, 510 U.S. at 411
    All ambiguities are resolved in
    favor of the Indians, and neither diminishment nor disestablishment will be found lightly.
    See 
    Yankton, 118 S. Ct. at 798
    ; 
    Hagen, 510 U.S. at 411
    .
    The primary purpose of the 1892 agreement, which was ratified by the 1894 Act,
    was to cede the unallotted surplus lands on the Yankton Sioux Reservation to the United
    States. The specific language accomplishing this goal is found in Articles I and II of the
    agreement. Article I states that the Tribe agrees to "cede, sell, relinquish, and convey to
    the United States all their [sic] claim, right, title, and interest in and to all the unallotted
    lands within the limits of the reservation." 28 Stat. at 314. Article II provides that the
    United States agrees to pay the Tribe $600,000 "in consideration for the lands ceded,
    sold, relinquished, and conveyed to the United States." 
    Id. at 315.
    The text of these
    articles refers explicitly only to the ceded lands.
    25
    The State argues that the cession of these lands necessarily terminated the
    reservation status of all lands within the original 1858 boundaries. It contends that
    allotments were intended to be temporary in nature and cannot alone constitute a
    reservation. It believes the failure of the Tribe to retain ownership in common of land
    for itself means that the reservation was disestablished. The State asserts that uncertainty
    about whether the Tribe owned land in common in 1894 was the key point which kept
    the Yankton Court from finding the reservation disestablished. Now that it has produced
    evidence to resolve that question in its favor and the district court has found that the
    Tribe did not reserve any lands in 1892 to be held in common, see Yankton Sioux Tribe
    v. Gaffey, 
    14 F. Supp. 2d
    at 1154, the reservation must be found disestablished. We
    cannot agree that the Supreme Court expected this point alone to be dispositive,
    however, for it said that among the factors causing it to limit its holding was "the fact that
    the Tribe continues to own land in common." 
    Yankton, 118 S. Ct. at 805
    (emphasis
    added), an apparent reference to the Tribe's current landholdings.
    The State also relies heavily on what it views as the background understanding of
    the 1894 Congress to support its conclusion that cession of all land held in common by
    the Tribe necessarily terminated the reservation status of everything within the original
    1858 boundaries. It cites the comment in Yankton that around the turn of the century
    "'[t]he notion that reservation status of Indian lands might not be coextensive with tribal
    ownership was unfamiliar.'" 
    Id. at 798
    (quoting 
    Solem, 465 U.S. at 468
    ). It is important
    to keep in mind that it is not clear that the reference in Solem to "tribal ownership" meant
    ownership of land in common by the Tribe, as opposed to ownership by a tribal
    member.10 In any event Indian tribes did not hold ownership rights to land, but rather
    10
    A careful reading of the relevant passage in Solem suggests that the Court used
    the terms "reservation lands" and "Indian lands" interchangeably to refer to all lands in
    which Indians had a property interest when it was discussing the assumptions of
    Congress in the early nineteenth century. Solem contrasted lands that "retained
    reservation status" from those that were "divested of all Indian interests," and the Court
    appeared to use both the words "reservation lands" and "Indian lands" to refer to lands
    26
    rights to exclusive use and occupancy of land. See Spalding v. Chandler, 
    160 U.S. 394
    ,
    403 (1896). Although the background understanding of the 1894 Congress "informs our
    inquiry," 
    id., courts have
    not been willing to extrapolate from general legislative
    assumptions and expectations of the late nineteenth century to find in each surplus land
    act a specific congressional purpose to remove all lands not under Indian control from
    reservation status. See 
    Solem, 465 U.S. at 468
    -69. If Congress' general understanding
    that tribal ownership was a necessary component of reservation status controlled, all
    land which passed out of tribal ownership would necessarily be found to have lost its
    reservation status—a conclusion the Supreme Court has explicitly refused to adopt. 
    Id. More persuasive
    arguments regarding the interpretation of Articles I and II are
    drawn from evidence which places the Act in its full historical context and sheds light on
    the parties' contemporaneous understanding of the impact of the cession. The State
    argues that this evidence shows that the "'cession' and 'sum certain' language" in Articles
    I and II, see 
    Yankton, 118 S. Ct. at 798
    (citation omitted), was intended to terminate the
    reservation status of all lands within the original reservation boundaries. The Tribe
    argues that these same documents establish that the parties understood that these articles
    would only terminate the reservation status of the ceded lands.
    The Commissioners who negotiated the agreement on behalf of the United States
    retained detailed records of the councils held to negotiate the sale of the unallotted lands
    and prepared an extensive report which was submitted to Congress along with the
    agreement. See S. Exec. Doc. No. 27, 53d Cong., 2d Sess. (1894). Two key points can
    be discerned from these records. First, the Commissioners indicated to the tribal
    that retained their reservation status. 
    Solem, 465 U.S. at 468
    . "Indian lands" included:
    "[o]nly those lands in which the Indians held some form of property interest: trust lands,
    individual allotments, and, to a more limited degree, opened lands that had not yet been
    claimed by non-Indians." 
    Id. Finally, the
    Court specifically pointed out that "only in
    1948 did Congress uncouple reservation status from Indian ownership." 
    Id. (emphasis added).
                                               27
    representatives that their primary objective was the purchase of the unallotted lands.
    Second, the Commissioners emphasized to the tribal representatives that tribal members
    needed to move into the modern, post tribal era and that the sale of the unallotted lands
    would constitute one step toward that ultimate goal. See 
    id. The Commissioners
    repeatedly emphasized that they had one primary purpose.
    Commissioner Adams, for example, introduced the Commission's purpose, stating that
    "we . . . understand that you own, outside your allotments, a large quantity of land in
    common. It is this land that you own in common that we were appointed by the Great
    Father to talk to you about." Council of the Yankton Indians (Oct. 8, 1892), transcribed
    in S. Exec. Doc. 27, 53d Cong., 2d Sess., at 48. They also indicated that the tribal
    leadership would retain some governing powers, suggesting for example, that: "It might
    be, after you sold your lands, you could have this reservation organized as a separate
    county. If this could be done—I do not say it can —you could govern your own people
    in your own way, so long as you obeyed the laws of the State ." 
    Id. The Yankton
    Sioux
    could have interpreted such comments to indicate that their powers of self government,
    which at that time were limited to lands in which Indians had a property interest, would
    not be further limited and that the cession of the unallotted lands would not alter the
    Tribe's control over the lands retained by the Indians. Although the Commissioners were
    careful not to make promises concerning the scope of tribal self government powers, the
    references to a continuing tribal government suggest the parties did not intend to
    disestablish the reservation.
    The Commissioners' introductory remarks, however, also emphasized that the
    tribal members needed to adapt to the modern era and urged them to allow settlers on the
    then unallotted lands so that they could learn from the white man how to farm, conduct
    business, and be citizens. 
    Id. In line
    with the assumption that the reservation system
    would soon be outmoded, Commissioner Cole admonished:
    28
    In your old life the tribal condition was a necessity. It united you and
    protected you and made you strong. But you are now living under new
    conditions and you must drop your old forms which are not suited to these
    conditions and take up new forms suited to your new mode of life. The
    Government seeing this sent an allotting agent to you to help you divide you
    land and select your homes. . . .
    Now that you have your homes and that your allotted lands are more
    than you can make use of, you have sent word to Secretary Noble that you
    desire to sell your surplus lands and get money to help you to improve your
    farms and build good houses and buy stock. The Great Father and his
    Great Secretary . . . have sent us here to buy [the] surplus lands for homes
    for white men who will settle among you; who will live peaceably and
    neighborly with you; who will cultivate these surplus lands and make your
    allotted lands more valuable.
    
    Id. at 50.
    At the time the cession agreement was negotiated, the allotment process was
    not even complete; many allotments remained to be finalized. See 1894 Commissioner
    Letter at 5. The concept of individual property ownership was new to the Indians, and
    although it was hoped allotment would stimulate individual effort to improve the land,
    there is little indication that this concept had taken root. See Report of the Yankton
    Indian Commission (Mar. 31, 1893), reprinted in S. Exec. Doc. No. 27, at 7, 14-16 (1893
    Report). The Indians thus could easily have understood these statements to mean that
    the status of the lands that had been allotted to them would not be changed by the
    agreement, and that they would retain control over these lands as in the past.
    The Commission's report to Congress highlights its hope that assimilation would
    be promoted by the allotment of reservation lands and the cession of those that remained
    unallotted, but the report also suggests the parties recognized a division between
    unallotted and ceded lands. The Commission indicated that "now that [the members of
    29
    the tribe] have been allotted their lands in severalty and have sold their surplus land – the
    last property bond which assisted to hold them together in their tribal interest and estate
    – their tribal interests may be considered a thing of the past." Report of the Yankton
    Indian Commission (Mar. 31, 1893), reprinted in S. Exec. Doc. No. 27, at 7, 19
    (hereinafter Report). The Supreme Court found this language supported its conclusion
    that the 1894 agreement divested the Tribe of jurisdiction over the ceded lands.
    
    Yankton, 118 S. Ct. at 803
    .
    This same report also indicates, however, that the ceded and nonceded lands
    would be treated differently, at least for as long as the Indians retained property in
    common, suggesting that the divestiture of jurisdiction was not complete. In explaining
    to Congress why they had such difficulty negotiating a price for the land, the
    Commissioners explained.
    On the matter of price we encountered much difficulty. Two important
    factors in determining the value of these lands seem to have been wholly
    overlooked by both the Indians and their friends: First, That the Indians
    were not selling their whole reservation, but less than two-fifths of it, and
    that more than three-fifths of it would remain in their possession for such
    cultivation and improvement as Indians will give to it, and free from
    taxation for twenty five years; second, that the surplus lands are not in one
    body, but scattered over the reservation and mixed up with the allotted
    lands of the Indians. We think the value of these surplus lands per acre
    would be doubled if the whole reservation were being disposed of by the
    Indians, to be equally improved by white people and uniformly taxed.
    1893 Report at 13. This report is evidence of the parties' understanding that only a
    portion of the reservation was being separated at that time, and also suggests that the
    negotiations were complicated by the Indians' differing conception of land use and
    property ownership.
    30
    The Commission's reports do not describe any reservation boundaries or mention
    any transfer of the Yanktons' tribal sovereignty. See Yankton Sioux Tribe v. Gaffey, 
    14 F. Supp. 2d
    1135, 1148 (D.S.D. 1998). Instead, these reports show only that the
    Commissioners emphasized the need for the Indians eventually to become completely
    assimilated into the "modern era" and encouraged them to sell their surplus lands to aid
    in this process. Although the sale of the surplus lands was characterized as a step
    required by changes of the modern era, it was not directly equated with the loss of
    control over other lands. In sum, the plain language of the text of Articles I and II only
    refers to the ceded lands, and the reports of the Commission do not indicate the "clear
    and plain" congressional intent required to show the reservation status of all nonceded
    lands was terminated by this Act. The evidence is thus insufficient to establish that the
    "cession and sum certain" language of Articles I and II was intended to disestablish the
    reservation.
    There are other provisions of the agreement which may shed light on the intended
    impact on unallotted lands. The State directs our attention to Articles III-VI and XI,
    which established a complex system for the payment of the purchase price of $600,000.
    28 Stat. 315-17. It points out that some aspects of the payment plan were linked to the
    twenty five year trust period and argues that this shows that such lands retained their
    Indian country status because the Indian title to the allotments had not yet been
    extinguished. The Tribe, on the other hand, argues that the provision allowing for the
    Act's creation of a fund to support schools, courts, and other tribal institutions evidences
    congressional intent to preserve tribal self government within the 1858 boundaries and
    to maintain reservation status for the allotted lands.
    According to the agreement for payment, $100,000 was to be divided among the
    members of the tribe per capita, and $500,000 was to be placed into an interest bearing
    account for the benefit of the Tribe. Article V provided that interest from that account
    could be used to set up a fund to meet basic needs of the tribal members, or it would be
    distributed on a per capita basis to tribal members. 28 Stat. at 315. After the trust period
    31
    expired on the allotted lands, any monies remaining in the original account or in the fund
    were to be disposed of by the Secretary of the Interior for the benefit of the Tribe. Arts.
    IV, V, 28 Stat. at 315. Article IX provided that the allotted land of any tribal members
    who died without heirs within twenty five years was to be sold and the proceeds added
    to the fund provided for in Article V. 28 Stat. at 315-17.
    The Tribe places great emphasis on Article V because it specifically provided that
    some of the interest due on payment funds might be set aside and used "for the care and
    maintenance of such orphans, and aged, infirm, or other helpless persons of the Yankton
    tribe of Sioux Indians. . . ; for schools and educational purpose for the said tribe; and for
    courts of justice and other local institutions for the benefit of said tribe." 28 Stat. at 315.
    Institutions that might have qualified for such monies included the Indian police force
    and the Court of Indian Offenses, both of which the district court found still operative at
    the time of ratification. See Yankton Sioux Tribe v. Gaffey, 
    14 F. Supp. 2d
    , at 1150.
    It is undisputed that this optional fund was never actually created, but the fact that it was
    provided for in the statute has relevance on the question of intent. Article V clearly
    foresaw continued tribal activity in providing for the needs of the Yankton Sioux in
    terms of education, justice, and "other local institutions." Nevertheless, section 2 of the
    article also contemplated a future in which such a fund would not be needed when the
    Indians might receive "complete title to their allotted lands and . . . assume[] all duties
    and responsibilities of citizenship." 28 Stat. at 315.
    The prohibitions on the sale of alcohol found in Article XVII provide further
    insight into the parties' intent. This article provides that "no intoxicating liquors nor other
    intoxicants shall ever be sold or given away upon any of the lands by this agreement
    ceded and sold to the United States, nor upon any other lands within or comprising the
    reservations of the Yankton Sioux or Dakota Indians." 28 Stat. at 318. The Supreme
    Court found this provision indicated that the parties intended to diminish the reservation
    by the Act of 1894, reasoning that the language would have been superfluous if all lands
    were to retain their reservation status. See 
    Yankton, 118 S. Ct. at 801
    . The language
    32
    would also have been superfluous if the parties had intended to disestablish the Yankton
    Sioux Reservation. The Court found it significant that the provision "signal[ed] a
    jurisdictional distinction between reservation and ceded land. Id." In this article the
    parties acknowledged the continued existence of two distinct categories of land to which
    different laws might apply.
    Article VIII, the "agency lands provision," provides strong evidence that a
    reservation was expected to remain in existence. This provision provides that "[s]uch
    part of the surplus lands hereby ceded and sold to the United States, as may now be
    occupied by the United States for agency, schools, and other purposes, shall be reserved
    from sale to settlers until they are no longer required for such purposes." 28 Stat. at 316.
    As the Supreme Court noted, this provision "counsels against finding the reservation
    terminated." 
    Yankton, 118 S. Ct. at 801
    . The Court cited its prior interpretation of
    virtually identical language in Solem where it reasoned that it would be "'difficult to
    imagine why Congress would have reserved lands for such purposes if it did not
    anticipate that the opened area would remain part of the reservation.'" 
    Yankton, 118 S. Ct. at 801
    (citing 
    Solem, 465 U.S. at 474
    ). Congress' expectation that the federal
    government would continue to have a significant presence in the area for the welfare of
    the Tribe indicates that some lands were expected to remain outside of primary state
    jurisdiction.
    The State argues that the retention of this land is irrelevant to our analysis because
    the provision does not specify that such reserved land remained in reservation status, and
    the federal government's continuing obligations were based on the fact that Indian
    allottees held patents for their land in trust. Nothing in Article VIII specifically ties the
    government's retention of these lands to the trust period, however, or indicates that its
    obligations were expected to end when the trust period expired. Instead, the Article says
    that the lands would be retained "until they are no longer required for such purposes."
    28 Stat. at 316. And in 1929 the lands were returned to the tribe for common purposes.
    33
    Act of February 13, 1929, ch. 183, 45 Stat. 1167 (explicitly providing that the lands
    could not be allotted).
    Neither the text of the 1894 Act nor evidence of the parties' contemporaneous
    understandings clearly establish an intent to disestablish the Yankton Sioux Reservation.
    The reports indicate that the Commissioners' statements may have sent mixed messages
    to the Indians in that they sometimes talked about continuing tribal control over land and
    sometimes suggested that the property bonds of the Indians would be severed. The
    Indian understanding of land use and control differed from the European American notion
    of individual property ownership and the Commissioners mixed messages could have led
    the Yankton Sioux to believe that their control over the lands retained in trust for
    individual members would remain unchanged. See Felix Cohen, Handbook of Federal
    Indian Law 131-32 (1982 ed.); see also Michael L. Ferch, Indian Land Rights, 2
    Transnat'l L. & Contemp. Probs. 301 (1992) (comparing the Indian view of property
    rights with the western view).
    The Act could not foresee all that would happen in the future with population
    movement, state development, and changing Indian policy, but it contained provisions
    showing concern for future interests of the Indians in common, as well as provisions
    recognizing that conditions were sure to change as white settlers moved in to the opened
    reservation with the expectation of state support. In the Act, the federal government
    reserved land to provide for tribal needs in Article VIII, and the parties recognized a
    distinction between ceded and reservation lands in Article XVII. The Act did not leave
    all land within the original exterior reservation boundaries under tribal control, see
    
    Yankton, 118 S. Ct. at 805
    , or define new reservation boundaries, and nothing in its text
    or the circumstances surrounding its passage suggests that any party anticipated that the
    Tribe would exercise jurisdiction over non Indians who purchased land after it lost its
    trust status. Some articles of the Act reflect the parties' assumption that an allottee who
    received full title at the end of the trust period would become subject to the civil and
    criminal laws of the State or territory in which he resided. 24 Stat. at 389-90. Article
    34
    V indicates that the fund which could be established to provide for helpless and infirm
    tribal members would no longer be needed "[w]hen the Yankton tribe of Sioux Indians
    shall have received from the United States a complete title to their allotted lands and shall
    have assumed all the duties and responsibilities of citizenship." 28 Stat. at 315.
    Congress also added the so-called "school sections clause" to the Act which parallels
    language in the South Dakota enabling act, Act of Feb. 22, 1889, 25 Stat. 679, and
    provided that certain sections of the ceded land would be reserved for common schools,
    28 Stat. at 319. This suggests that as more white settlers came on to the opened lands,
    increased state involvement on their behalf was expected, and the jurisdiction of the State
    was expected to increase over time.
    In sum, the 1894 Act did not clearly disestablish the Yankton Sioux Reservation,
    but it intended to diminish the reservation by not only the ceded land, but also by the land
    which it foresaw would pass into the hands of the white settlers and homesteaders. The
    text of the 1894 Act, read in its full historical context, establishes that the intent was to
    cede certain lands to the United States and to open areas of the Yankton Sioux
    Reservation to white settlers, as well as to reserve land to be used to care for continued
    tribal interests. Until the Indian allottees would receive their lands in fee and the trust
    period over them would end, they could not convey land to non Indians. It was then
    foreseen that the trust period over the allotments would at some point come to an end,
    but we note that some of this allotted land apparently remains in trust to this very day.
    D.
    The treatment of the Yankton area in the years following the passage of the Act
    provides further evidence that the nonceded lands retained their reservation status until
    they passed out of trust. Although evidence regarding the subsequent treatment of the
    area cannot control when there is strong textual and contemporaneous evidence regarding
    the status of the land in question, 
    Yankton, 118 S. Ct. at 804
    , courts have consistently
    recognized that events occurring after the passage of a surplus land act may shed light
    35
    on the contemporaneous understanding of the act, see 
    Solem, 465 U.S. at 470
    1; see also
    
    Hagen, 510 U.S. at 411
    . Established jurisdictional patterns may also over time lead to
    the development of justifiable expectations which the Supreme Court has found worthy
    of consideration. Rosebud Sioux 
    Tribe, 430 U.S. at 604-05
    .
    Congress took a definitive and considered step when it decided to return title to
    the Yankton Sioux Tribe for the lands that had been reserved for federal use in the 1894
    Act. See Act of February 13, 1929, ch. 183, 45 Stat. 1167.11 Congress not only returned
    the land to the Tribe, but also specifically provided that the land would not become
    available for allotment purposes. 
    Id. Although "the
    views of a subsequent Congress
    form a hazardous basis for inferring the intent of an earlier one," 
    Yankton, 118 S. Ct. at 803
    , the return of these lands to tribal control suggests that the reserved lands were
    always intended to provide a property site for organized efforts to provide aid and
    education to tribal members so long as they were needed. This action indicates that at
    the close of the era, the United States government understood, as it continues to argue
    today, that the Yankton Sioux reservation was not completely disestablished in 1894.
    Longstanding divisions of jurisdictional authority have also been entitled to
    considerable weight in similar boundary disputes. See Rosebud Sioux Tribe, 
    430 U.S. 11
             References cited by the parties to administrative documents and maps, which
    either refer to the Yankton Sioux Reservation or lack any such reference, were found
    by the Supreme Court to have "limited interpretive value." 
    Yankton, 118 S. Ct. at 803
    -
    04. The use of the term "Yankton Sioux Reservation" in such documents, without
    more, cannot be said to be a considered jurisdictional statement regarding the specific
    status of the remaining Indian lands. Moreover, problems associated with relying on
    the presence or absence of a cite on a map is illustrated by the failure of a prestigious
    map maker to include the states of North Dakota, South Dakota, Oklahoma and parts
    of Minnesota, Iowa, and Kansas in one world atlas. See Richard J. Margolis, "How
    the West Was Lost," The New Leader, p. 13 (Nov. 27, 1989) (discussing the omission
    of these states from Rand McNally's 1989 Photographic World Atlas).
    36
    at 605 n.28. The State has presented uncontroverted evidence showing that the State has
    assumed primary jurisdiction over unallotted lands that have passed out of trust status.
    The Tribe has not established reason to doubt the veracity of the various letters and
    reports of several Superintendents of the Yankton Agency and Commissioners of Indian
    Affairs which indicate that the federal government only exercised jurisdiction over
    allotted lands held in trust and the agency reserve. In addition, three former United
    States Attorneys for the District of South Dakota testified that during their tenures, which
    collectively cover most of the years between 1965 and 1991, the federal government
    continued to exercise jurisdiction only over those lands actually held in trust. The Tribe
    has presented evidence indicating that it maintained a tribal police force and an
    independent judicial system following the passage of the 1894 Act.12 It has also
    presented evidence suggesting that the State did not always allocate sufficient resources
    to enforce its laws consistently within the original reservation boundaries. While this
    evidence may show problems of enforcement, it does not prove that the Tribe or the
    federal government exercised jurisdiction over the whole area. On the record before the
    court, the Tribe has not presented any new evidence to undermine the Supreme Court's
    statement that the Tribe has not asserted civil, regulatory, or criminal jurisdiction over
    lands other than those held in trust, 
    Yankton, 118 S. Ct. at 804
    , and "the longstanding
    assumption of jurisdiction by the State over [a predominately non-Indian area creates]
    justifiable expectations which should not be upset by [a] strained . . . reading of the Acts
    of Congress," Rosebud Sioux 
    Tribe, 430 U.S. at 604-05
    .
    III.
    12
    The Tribe's position on this evidence is not contested. A court of Indian
    offenses was in existence at the time of the treaty in 1894. Although it was abolished
    in 1909, its duties were taken over by the Superintendent until it was reinstated in 1943.
    The court was replaced in 1945 with the Yankton Sioux Tribal Court, but there is no
    evidence that this court ever exercised jurisdiction over lands owned by non-Indians.
    37
    In 1858 Congress designated the Yankton Sioux Reservation as an area set aside
    for the exclusive use of the Yankton Sioux Tribe. The status of the lands which initially
    comprised this reservation were later altered when the federal government allotted lands
    previously held in common by the Tribe to individual Indians and then purchased the
    remaining unallotted lands to open them up for homesteading. In Yankton, the Supreme
    Court held that the cession of the unallotted lands in 1894 removed these lands from the
    reservation and indicated that the 1858 boundaries were not maintained. The text of the
    1894 Act and evidence regarding the parties' contemporaneous understanding of it
    establish that the reservation was maintained, but do not define its precise boundaries.
    When viewed in its full historical context, however, it is clear that the parties did not
    intend for the tribe to retain control over allotted lands which passed out of trust status
    and into non Indian hands.
    For these reasons, we hold that the Yankton Sioux Reservation has not been
    disestablished, but that it has been further diminished by the loss of those lands originally
    allotted to tribal members which have passed out of Indian hands. These lands are not
    part of the Yankton Sioux Reservation and are no longer Indian country within the
    meaning of 18 U.S.C. § 1151. We recognize that the original exterior treaty boundaries
    of the reservation have not been maintained. See 
    Yankton, 118 S. Ct. at 799
    -800. We
    also assume that land now owned in fee by individual Indians is not under tribal
    jurisdiction unless it is found to be "within the limits of [the] Indian reservation." 18
    U.S.C. § 1151(a). On the record before the court, however, we cannot define the precise
    limits of the reservation which remains.
    The current amount of Indian trust land on the Yankton Sioux Reservation is
    unclear from the record. Since both sides have followed an all or nothing strategy (the
    State arguing disestablishment and the Tribe claiming maintenance of the 1858
    boundaries), neither side spent much time developing the record on the specifics of this
    trust land. The South Dakota Supreme Court has said that the reservation was reduced
    by the 1894 Act "from a 410 square mile (430,495 acre) sanctuary down to what is
    38
    presently scattered Indian holdings of approximately 40,000 acres." South Dakota v.
    Greger, 
    559 N.W.2d 854
    , 859 (1997). It also stated that in modern times both Indians
    and non Indians refer to the reservation "as a 'mile square'" 
    id., in reference
    "to the tribal
    headquarters area at Marty," 
    id. at 859
    n.4. The Supreme Court later stated in Yankton
    that currently less than ten percent of the 1858 reservation lands remains "in Indian
    
    hands," 118 S. Ct. at 804
    , and that within the original exterior reservation boundaries,
    there are only 30,000 acres held in trust for individual Indians, and 6,000 acres of "tribal
    lands," 
    id. at 796.
    References in the briefs in these cases and in judicial opinions are not always clear
    about what is meant by trust land. The term is variously used to include 1) the land
    reserved to the federal government in the 1894 Act and later returned to the Yankton
    Tribe, 2) land allotted to individual Indians that remains held in trust, and 3) land taken
    into trust under the Indian Reorganization Act of 1934. Efforts at oral argument to get
    precise statements from the parties identifying what trust land remains were unsuccessful.
    At this time we hold only that the land reserved to the federal government in the 1894
    Act and then returned to the Tribe continues to be a reservation under § 1151(a), and we
    leave it to the district court on remand to make any necessary findings relative to the
    status of Indian lands which are held in trust.
    The judgments of the district court are affirmed in so far as the court concluded
    that the Yankton Sioux Reservation has not been clearly disestablished, but the
    judgments are reversed in so far as the court concluded that the 1858 exterior reservation
    boundaries remain intact and that all nonceded lands remain part of the reservation. The
    permanent injunctions entered by the district court are vacated, and the cases are
    remanded for further proceedings consistent with this opinion.
    39
    A true copy.
    Attest:
    CLERK, U.S. COURT OF APPEALS, EIGHTH CIRCUIT.
    40