FILED
                                               United States Court of Appeals
                                                       Tenth Circuit

                                   PUBLISH          January 10, 2019
                                                   Elisabeth A. Shumaker
              UNITED STATES COURT OF APPEALS           Clerk of Court

                           TENTH CIRCUIT



MARCIA W. DAVILLA; BENJAMIN
BLACKSTAR; THOMAS
BLACKSTAR, III; VANNETTE M.
BRANHAM; EDMOND L. CARTER;
PATRICIA CARTER FILES;
HAROLD F. DUPOINT; CARRIE G.
DUPOINT; RUDOLPH W. FISHER,
JR.; CAMERON KEAHBONE;
SINDY M. KEAHBONE; GILBERT
C. KEAHBONE; MARK B.
KEAHBONE; MARI L. KEAHBONE;
PERRY K. KEAHBONE; BLAKE E.
KEAHBONE; PATRICK
KEAHBONE, JR.; EDBERT E.
KEAHBONE, JR.; RENA A.
KILLSFIRST; KATINA S. LIPTON;
JANICE C. MAMMEDATY;
AMANDA M. MCCARTHY;
MICHAEL R. MCCARTHY;
MAYREDENA M. PALMER;
RACHEL M. PALMER; MEGAN L.
PALMER; LAUREN SILVERBIRD;
ANGELA R. SILVERHORN;
HARVEY E. TUCKER; WILLIAM K.
WARE; SAMUEL M. WARE;
MATTHEW M. WARE; BETTY L.
WARE; COREY WARE; PATRICIA
WARE; JEAN WARE; WESLEY
WARE, III; MELVA J. WERMY,

         Plaintiffs - Appellees,
v.                                           No. 17-6088
 ENABLE MIDSTREAM PARTNERS
 L.P.; ENABLE G.P., LLC; ENABLE
 OKLAHOMA INTRASTATE
 TRANSMISSION LLC, formerly
 known as Enogex, LLC,

             Defendants - Appellants.


        APPEAL FROM THE UNITED STATES DISTRICT COURT
           FOR THE WESTERN DISTRICT OF OKLAHOMA
                   (D.C. NO. 5:15-CV-01262-M)


Andrew W. Lester (Barry L. Pickens, Spencer Fane LLP, Overland Park, Kansas,
with him on the briefs), Spencer Fane LLP, Oklahoma City, Oklahoma, for
Appellants.

Dustin T. Greene (David C. Smith, Kilpatrick Townsend & Stockton LLP,
Washington, D.C., and Thurston H. Webb, Kilpatrick Townsend & Stockton LLP,
Atlanta, Georgia, with him on the brief), Kilpatrick Townsend & Stockton LLP,
Winston-Salem, North Carolina, for Appellees.


Before TYMKOVICH, Chief Judge, LUCERO and HARTZ, Circuit Judges.


TYMKOVICH, Chief Judge.


      Enable Intrastate Transmission, LLC owns and operates a natural gas

pipeline that crosses Indian allotted land in Anadarko, Oklahoma. A twenty-year

easement for the pipeline expired in 2000. Enable failed to renew the easement

but also failed to remove the pipeline. In response, roughly three-dozen



                                        -2-
individual Native American Allottees—who hold equitable title in the allotted

land—filed this lawsuit.

      The district court granted summary judgment to the Allottees, ruling on the

basis of stipulated facts that Enable was liable for trespass. The court then

enjoined the trespass, ordering Enable to remove the pipeline. Enable appeals

both rulings, claiming several legal errors. 1

      We affirm in part, reverse in part, and remand for further proceedings. The

district court properly granted summary judgment to the Allottees but erred in

issuing the permanent injunction. The availability of equitable relief in this case

depends on the relative weight of interests not yet considered below. We leave

those considerations for the district court to determine in the first instance.

                                 I. Background

      “After the formation of the United States, the [Indian] tribes became

‘domestic dependent nations,’ subject to plenary control by Congress.” Puerto

Rico v. Sanchez Valle, 

, 1872 (2016) (quoting United States v.

Lara, 

, 204 (2004)); see also Cty. of Oneida v. Oneida Indian

Nation, 

, 234 (1985) (“With the adoption of the Constitution, Indian



1
  The Allottees have also filed a motion for partial dismissal of this appeal,
asserting that we lack jurisdiction over one of the interlocutory orders issued
below. The merits briefing makes clear, however, that Enable does not appeal the
order in question. We therefore DENY the motion as moot.

                                          -3-
relations became the exclusive province of federal law.”). This “plenary

authority” includes “full power to legislate concerning . . . tribal property.”

Winton v. Amos, 

, 391 (1921); see also Ramah Navajo Sch. Bd., Inc.

v. Bureau of Revenue, 

, 837 (1982) (linking Congress’s “broad

[regulatory] power . . . [over] tribal affairs” to “the Indian Commerce Clause” and

“the semi-autonomous status of Indian tribes” (first citing U.S. Const. art. I, § 8,

cl. 3; then citing White Mountain Apache Tribe v. Bracker, 

, 142

(1980))). See generally White 

–45 (explaining the

relationship between federal, state, and tribal regulatory authority).

      Congress exercised that power during the “Allotment Era” of the late-

nineteenth and early-twentieth centuries by “carv[ing] [Indian] reservations into

allotments and assign[ing] the land parcels to tribal members.” Pub. Serv. Co. v.

Barboan, 

, 1104 (10th Cir. 2017). See generally 

(detailing the history of the Allotment Era). This project aimed to promote Indian

assimilation by encouraging private property ownership and agricultural pursuits.

E.g., Upper Skagit Indian Tribe v. Lundgren, 

, 1652 (2018).

      But all did not go according to plan. “[M]any of the early allottees quickly

lost their land through transactions that were unwise or even procured by fraud.”

Cty. of Yakima v. Confederated Tribes & Bands of the Yakima Indian Nation, 

, 254 (1992). In response, Congress “restricted immediate alienation or


                                          -4-
encumbrance” in favor of a trust-based model. 

Dawes Act, ch.

119, 24 Stat. 388 (1887), repealed by Indian Land Consolidation Act

Amendments of 2000, Pub. L. No. 106-462, §§ 101–103, 114 Stat. 1991,

1991–2006 (codified at 25 U.S.C. §§ 2201–2219), Congress empowered the

President to allot reservation land in trust rather than granting immediate, fee

simple ownership, County of 

. Under these trust

arrangements, the United States retained legal title of allotted parcels while

Indian allottees received equitable title. See 

could secure a fee

simple land patent only upon dissolution of the trust, which the government would

allow after a term of years or by special determination. 

      It was through this program that, in August of 1901, President William

McKinley allotted 160 acres of land in Anadarko, Oklahoma, to a Kiowa woman

named Emaugobah. But Congress’s allotment project “came to an abrupt end . . .

with passage of the Indian Reorganization Act” in 1934. 

Under that

legislation, “Congress halted further allotments and extended indefinitely the

existing periods of trust applicable to already allotted (but not yet fee-patented)

Indian lands.” 

result, Emaugobah never received a fee simple patent.

And well over a century later, the federal government still holds roughly 136

acres of Emaugobah’s tract in trust for the benefit of her tribe and thirty-some

individual Allottees.


                                          -5-
      Meanwhile, Congress’s vacillation on Indian land policy left “a

checkerboard of tribal, individual Indian, and individual non-Indian land

interests” across Indian country. 

. This, in turn,

created its own set of problems. As Congress hemmed and hawed over Indian

affairs, the American people headed west and industrialized. The Great

Plains—once passable only by foot, hoof, and wagon—slowly but surely sprouted

a network of train tracks, telegraph wires, and other conduits of modern

commerce. “[T]o help ensure that [such modern] necessities . . . could” span the

continent “without encumbrance,” Congress soon enacted a series of

“right-of-way statutes.” 

here, these laws empowered the Secretary of the Interior to

approve easements “for all purposes . . . over and across any lands . . . held in

trust by the United States for individual Indians or Indian tribes.” 25 U.S.C.

§ 323. But the Secretary could not do so unilaterally. Instead, the Secretary

needed “the consent of the proper tribal officials” or, where applicable,

“individual Indian owners.” 

In the case of allotments shared among

multiple Indians, the law required consent of a “majority of the [equitable]

interests” to approve a right-of-way. 

acting under these provisions, the Secretary allowed conveyance of

a twenty-five-foot-wide pipeline easement over a strip of Emaugobah’s allotment.


                                          -6-
By its terms, the easement would allow Producer’s Gas Company to “install . . .

and thereafter use, operate, inspect, repair, maintain, . . . and remove a single

buried [twenty-inch] natural gas pipeline” within a twenty-year period. App. 40.

Producer’s Gas later conveyed both the easement and the pipeline to Enable.

      When the easement expired in November 2000, however, Enable’s pipeline

remained buried in the ground. Enable eventually sought a new twenty-year

easement by approaching the Allottees and applying for approval from the Bureau

of Indian Affairs. But the company failed to secure approval for the new

easement from a majority of the equitable interests. Accordingly, the Bureau

cancelled Enable’s right-of-way application. Apparently undeterred, Enable

continued to operate the pipeline.

      The Allottees eventually sued. Their complaint claimed Enable was

committing a trespass and sought a court order compelling the pipeline’s removal.

The parties agreed on most of the relevant facts, so the Allottees moved for

partial summary judgment on liability for trespass and injunctive relief. The

district court granted the motion. Enable now appeals.

                                     II. Analysis

      Enable raises two issues on appeal. First, it argues the district court erred

in granting summary judgment to the Allottees on their trespass claims. Second,

it contends the district court erred in issuing a permanent injunction to enforce the


                                          -7-
summary judgment ruling. We affirm the district court’s entry of summary

judgment. We reverse its entry of a permanent injunction, however, and remand

for the appropriate weighing of equities.

      A. Summary Judgment

      We review district court grants of summary judgment de novo. White v.

York Int’l Corp., 

, 360 (10th Cir. 1995). In so doing, we ask the same

question the district court asked: has discovery yielded a genuine dispute of

“material fact” or is the movant “entitled to judgment” on a claim or issue without

any need to weigh evidence? Fed. R. Civ. P. 56(a); see Anderson v. Liberty

Lobby, Inc., 

, 249 (1986). A genuine dispute arises where the

available evidence would allow a rational jury to accept either party’s allegation

of a particular fact. See Tabor v. Hilti, Inc., 

, 1215 (10th Cir.

2013). But only facts that “could have an effect on the outcome” of a claim

qualify as “material.” 

v. Horizon/CMS Healthcare Corp., 

, 1190 (10th Cir. 2000)). We construe all evidence and draw all

inferences in favor of the party opposing a summary judgment motion. See, e.g.,

EagleMed LLC v. Cox, 

, 899 (10th Cir. 2017).

      But it is the law, not the material facts, that complicates this case. When a

dispute arises over possessory rights in Indian allotted land, federal law governs.

See Nahno-Lopez v. Houser, 

, 1282 (10th Cir. 2010); cf. Clearfield


                                            -8-
Tr. Co. v. United States, 

, 366 (1943) (“The rights and duties of the

United States on commercial paper which it issues are governed by federal rather

than local law.”). And although no act of Congress expressly creates a right of

action for trespass on Indian allotted land, the parties agree such a right exists.

See, Aplt. Br. at 16; Aple. Br. at 15. 2 They do, however, dispute the rules of

decision. Thus we must determine those rules as a matter of so-called “federal

common law.” 3

      Because we lack a federal body of trespass law to protect the Allottees’

federal property interests, we must borrow state law to the extent it comports with

federal policy. See Kamen v. Kemper Fin. Servs., Inc., 

, 98 (1991);


2
  Nahno-Lopez also concerned an alleged trespass on Indian allotted land. 

. In that case, however, we affirmed summary judgment to the
defendants due to a lack of evidence to prove an essential element. See 

It is therefore unclear whether we have ever formally recognized a federal
claim for trespass on an Indian allotment, or simply assumed such a claim’s
existence. Cf., e.g., Gohier v. Enright, 

, 1220–22 (10th Cir. 1999)
(disposing of a claim under federal law without deciding whether to recognize
that claim).
3
  Of course, “[t]here is no federal general common law.” Erie R.R. Co. v.
Tompkins, 

, 78 (1938) (emphasis added). Nevertheless, the federal
courts have—confusingly—adopted the label “federal common law” to describe a
certain variety of statutory interpretation. See generally Martha A. Field, Sources
of Law: The Scope of Federal Common Law, 99 Harv. L. Rev. 881, 890–97 (1986)
(explaining the meaning of the term). Within this realm, federal courts drift far
from codified text and interpret congressional silence to include rules of law
protecting “uniquely federal interests.” Boyle v. United Techs. Corp., 

, 504 (1988) (quoting Tex. Indus., Inc. v. Radcliff Materials, Inc., 

, 640 (1981)).

                                          -9-
California ex rel. State Lands Comm’n v. United States, 

, 283

(1982); United States v. Kimbell Foods, Inc., 

, 728 (1979). The State

of Oklahoma recognizes a right of action in trespass where one person “actual[ly]

physical[ly] inva[des] . . . the real estate of another without the permission of the

person lawfully entitled to possession.” Williamson v. Fowler Toyota, Inc., 

, 862 (Okla. 1998). In other words, a trespass occurs when “one . . .

enters upon the property of another without any right, lawful authority, or express

or implied invitation, permission, or license.” 

must not be “in the

performance of any duty to the owner or person in charge or on any business of

such person.” 

trespasser comes or remains on land “merely for his

own purposes, pleasure, . . . convenience, or out of curiosity.” 

of Oklahoma law thus yields three elements constituting the

Allottees’ federal trespass claims. First, the Allottees must prove an entitlement

to possession of the allotment. Second, they must prove Enable physically entered

or remained on the allotment. Finally, they must prove Enable lacked a legal

right—express or implied—to enter or remain. The stipulated facts already

described definitively prove the first two elements. Enable takes issue, however,

with the entry of summary judgment on the third.




                                         -10-
             1. Consent as a Defense to Trespass

      Enable contends it has produced evidence of consent sufficient to prove a

legal right to maintain the pipeline despite the easement’s expiration. See Aplt.

Br. 20–23. Moreover, Enable argues the Allottees’ failure to address this

evidence in their opening summary judgment brief below should have rendered

the motion insufficient at the outset. See 

      We first address the role of consent in this area of law. In Nahno-Lopez we

considered a similar trespass action regarding Indian allotted land. See 

. Several individual Comanche had agreed to lease their allotted land to the

Fort Sill Apache Tribe for development of a casino parking facility. A

controversy then arose among the allottees, the Tribe, and the Bureau of Indian

Affairs regarding the lease’s validity. The allottees sued the Tribe, claiming

trespass. The district court granted summary judgment to the Tribe.

      We affirmed. We reasoned that the Comanche allottees had not offered

record evidence sufficient to survive summary judgment. We specifically noted

the Comanche allottees’ failure to controvert the Tribe’s evidence of “consent” to

the alleged trespass—namely, the lease document and acceptance of rent

payments. See 

1284. Because, in our words, “consent forms a

complete defense to trespass” under the incorporated Oklahoma law, we upheld

the summary judgment order. 

                                        -11-
      Enable relies on this language in arguing it has a sufficient fact question

regarding consent. In 2004, Enable obtained written consent forms from five of

the thirty-seven individual Allottees in this case. The forms show these five

Allottees’ willingness to grant a new right-of-way for the pipeline in exchange for

cash payments. 4 Despite the fact that these Allottees hold less than ten percent of

the interests in equitable title, Enable contends their consent creates a triable

factual dispute precluding summary judgment under Nahno-Lopez. See Aplt. Br.

at 21–23. If consent is “a complete defense to trespass,” Enable argues, then

these forms would allow a reasonable jury to rule against trespass liability.

      This argument confuses the law. Admittedly, our concise presentation of

“consent” as a “complete defense to trespass” in Nahno-Lopez somewhat

oversimplified the rule. To be sure, the rightful possessor of real property cannot

hold his licensees liable for trespass under Oklahoma law. But this is

because—as we have just explained—the defendant’s lack of a right to enter is an

element of the claim. Accordingly, evidence of a plaintiff’s consent to a

defendant’s entry on the land will defeat liability in those cases where the

plaintiff’s consent itself creates a right to enter or remain. In such cases, the

claim will fail for lack of proof on an essential element.


4
  The Allottees’ have contested the continued validity of these fourteen-year-old
forms. See Aple. Br. at 32–33. We assume their validity for the sake of
argument.

                                         -12-
      When it comes to maintaining a pipeline over Indian allotted land, however,

Congress has dictated the prerequisites of a right to enter by statute. Enable thus

has no legal right to keep a structure on the Allottees’ land unless and until it

secures a right-of-way for that purpose from the Secretary of the Interior. See 25

U.S.C. § 323. The Secretary must, in turn, have the approval of the relevant

Indian stakeholders. See 

      The statute notwithstanding, Enable argues “[a] single owner of a tenancy

in common may enter into a lease for the entire co-tenancy property without any

other’s consent.” Aplt. Br. at 22 (emphasis added). Enable gives us no reason to

equate the Allottees’ interest in the land with a traditional tenancy in common.

But even if it were, the authorities Enable identifies do not support this bold

assertion. See United States v. Craft, 

, 280 (2002) (explaining, in

dicta, that under traditional English common law, cotenants “may each

unilaterally alienate [or encumber] their shares” but also have “the right to . . .

exclude third parties from” the property (emphasis added)); Anderson v. Dyco

Petroleum Corp., 

, 1371–72 & n.8 (Okla. 1989) (holding that

cotenants in the “working interest in [a] natural gas well” may each “market

production from the well and . . . [sell] gas to a purchaser . . . without consent of

other cotenants,” 

More to the point, those authorities fall well short

of holding that one cotenant has no right of action for trespass under Oklahoma


                                          -13-
law when another cotenant—much less a small minority of cotenancy interests—

has agreed to a right-of-way easement. And though we have found no Oklahoma

authority directly on point, other jurisdictions have adopted a directly opposite

view. See, e.g., Burnham v. Balt. Gas & Elec. Co., 

, 87 (Md. 1958)

(“The authorities appear to be uniform in holding that a cotenant cannot by

himself grant an easement that will bind his cotenants.”).

      Moreover, even if Oklahoma would say that this evidence could defeat any

trespass claim, we would not incorporate such a rule into the Allottees’ federal

right of action. As we explained above, federal courts should only incorporate

state rules of decision into federal claims to the extent those rules are consistent

with federal law and policy. See, e.g., 

. Needless to say,

securing the approval of a majority of beneficial interests plus the government

presents a greater challenge than getting the consent of just a few minority

stakeholders. Thus, if the consent of a minority of interests in equitable title

could defeat any federal claim for trespass on an Indian allotment, there would be

no point to fulfilling the more stringent requirements of securing a right-of-way

under federal statute. Adopting Enable’s view would therefore frustrate federal

Indian land policy, effectively robbing Indian allottees and the government of

meaningful control over alienation. We thus reject Enable’s theory of consent.




                                         -14-
      In light of this conclusion, Enable’s proffered evidence plainly does not

warrant reversal of the district court’s summary judgment ruling. The undisputed

facts—expiration of the easement, specifically—show that Enable lacks a legal

right to keep the pipeline in the ground. The consent forms would not allow a

reasonable jury to find otherwise.

      The Allottees’ briefing below did not bar the district court from reaching

this conclusion either. To be sure, the Allottees had to show liability was

“appropriate as a matter of law” to support summary judgment. Trainor v. Apollo

Metal Specialties, Inc., 

, 979 (10th Cir. 2002). And they did not

mention the consent evidence in their initial motion. But the consent evidence

would not have contributed to the initial showing of liability. Thus, because the

Allottees raised the stipulated facts that the easement had expired and not been

renewed, the onus fell to Enable to put its right to entry at issue. See Anderson v.

Dep’t of Heath & Human Servs., 

, 947 (10th Cir. 1990).

      Nor did the district court exceed its discretion by allowing the Allottees to

file a reply brief addressing consent after Enable raised the issue. See Beaird v.

Seagate Tech., Inc., 

, 1164 (10th Cir. 1998) (applying the abuse of

discretion standard). Enable had a full opportunity to brief the issue—indeed, it

raised the issue itself. More importantly, Enable gives no indication that it

sought and was denied an opportunity to file a surreply. Thus, the court below


                                        -15-
had every right to reach and resolve this issue. See Jencks v. Modern Woodmen of

Am., 

, 1268–69 (10th Cir. 2007).

             2. Demand for Removal

      Enable also argues that no duty to remove the pipeline ever arose—

expiration of the easement notwithstanding—because the Allottees never

demanded that Enable remove the pipeline.

      We note first that Enable failed to raise this argument below. A litigant

must preserve an issue for appellate review by pressing it in the trial court. See,

e.g., Carney v. Okla. Dep’t of Pub. Safety, 

, 1351 (10th Cir. 2017).

And because Enable has not raised it under the plain error standard here, we have

no obligation to address it. See Richison v. Ernest Grp., Inc., 

,

1130–31 (10th Cir. 2011).

      Recognizing this problem, Enable has attempted to shift blame to the

Allottees. According to Enable, the Allottees could only secure summary

judgment if they briefed all elements of their trespass claim—including demand

for removal. See Aplt. Br. at 18–20; Reply Br. at 2–4. But our adversarial system

does not work that way. To be sure, a party seeking summary judgment must

show the law and available evidence compel the requested outcome. See Fed. R.

Civ. P. 56; Adickes v. S. H. Kress & Co., 

, 157 (1970); Neal v. Lewis,

, 1248 (10th Cir. 2005); Reed v. Bennett, 

, 1194 (10th


                                        -16-
Cir. 2002). And to do so, he must necessarily identify governing legal principles.

But even an erroneous or incomplete view of the law can support summary

judgment against a party that fails to contest it. Indeed, our courts act only as

“neutral arbiter[s] of matters the parties present.” Greenlaw v. United States, 

, 243, 128 (2008). Thus, the movant’s burden of production at the

summary judgment stage does not abrogate the nonmovant’s obligation to contest

matters of law. If it did, district court review of summary judgment motions

would become a waste of time in many instances. See Wright v. Experian Info.

Sols., Inc., 

, 1244 n.6 (10th Cir. 2015).

      But Enable’s forfeiture does not prevent us from definitively rejecting its

demand argument on the merits. See, e.g., United States v. Jarvis, 

,

1201 (10th Cir. 2007); see also Champagne Metals v. Ken-Mac Metals, Inc., 

, 1088 (10th Cir. 2006) (declaring our court’s discretion to affirm on

any sufficient ground the parties have had an opportunity to address). And in the

interest of clarifying the law, we think it appropriate to do so. Cf. 

.

      Again, we incorporate Oklahoma law into this federal claim so long as it

does not frustrate federal policy. See, e.g., 

. And we begin

by noting the absence of any Oklahoma case establishing a demand requirement.

See Fairlawn Cemetery Ass’n v. First Presbyterian Church, U.S.A., 496 P.2d


                                         -17-
1185, 1187 (Okla. 1972) (specifically considering a trespass by means of a

permanent physical invasion of dirt fill); Russell v. Williams, 

(Okla.

Civ. App. 1998) (considering trespass by a portion of a modular home); see also

Frank v. Mayberry, 

, 775–76 (Okla. 1999) (often cited as explaining

Oklahoma’s law of trespass); 

(same).

      Moreover, even assuming—as Enable urges—that Oklahoma follows the

Restatement (Second) of Torts, see Aplt. Br. at 17 & n.6; but cf. 

(noting that the Oklahoma Supreme Court has “quoted [the Second

Restatement] with approval,” rather than adopting it), the argument still fails.

The Restatement provides that “the continued presence on the land of a structure

. . . which the actor . . . has placed” there “with the consent of” the lawful

possessor constitutes a trespass “if the actor fails to remove it after the consent

has been effectively terminated.” Restatement (Second) of Torts § 160 (Am. Law

Inst. 1977) (emphasis added). The comments clarify that “[i]f a structure . . . is

placed on the land with the possessor’s consent conditioned upon the actor’s

subsequently removing it, the termination of consent creates a duty to remove it.”

And, unsurprisingly, “the lapse of any specified period of time by

which the consent is restricted” terminates consent. 

      According to these rules, the easement’s expiration created a duty to

remove the pipeline. Permission to lay and maintain the pipeline came


                                          -18-
hand-in-hand with an obligation to remove it. See App. 40 (granting the easement

to “install . . . and remove” the pipeline within a term of twenty years); cf. 25

C.F.R. § 161.5(I) (1980) (requiring right-of-way applicants to expressly agree to

restore the land to its original condition). Indeed, there would have been no sense

in limiting the easement term to twenty years otherwise. The Restatement would

therefore not impose a separate obligation to demand removal on these facts. 5

      To be sure, had the Allottees refused to allow Enable to remove the

pipeline, the Restatement might have forbidden liability for trespass. See

Restatement (Second) of Torts §§ 160 cmt. m, 161 cmt. d. But Enable gives us no

reason to believe the Allottees have ever prevented removal of the pipeline.

Instead, Enable espouses the view that it would have incurred trespass liability for

attempting to remove the pipeline unless and until the Allottees made a removal

demand. This argument mischaracterizes the right-of-way grant and misstates

Oklahoma law. Both allowed Enable to enter the land to remove the pipeline at

least within the easement term, if not beyond it. See App. 40; 

.

      Ignoring these issues, Enable focuses on rules pertaining to structures

“tortiously placed” on land and subsequently transferred to new owners. See



5
  For that matter, the complaint filed in district court acted as a demand for
removal.

                                         -19-
Aplt. Br. at 18 (discussing Restatement (Second) of Torts § 161). Of course,

Producer’s Gas—Enable’s predecessor—did not tortiously place the pipeline on

the land; it constructed the pipeline with permission. And the fact that Enable

kept the pipeline on the land without permission does not render the initial

placement tortious. Moreover, the only transfer of the pipeline occurred during

the easement term, at which point the parties agree the pipeline’s presence was

still lawful. Finally, even assuming this case had involved a transfer after

expiration of the easement, the Restatement makes clear that notice of a duty to

remove—for instance, through the terms of an easement contract—binds the

transferee. See Restatement (Second) of Torts § 161(2).

      Finally, Enable errs by relying on the Ninth Circuit’s decision in United

States v. Milner, 

(9th Cir. 2009), to bolster its position. In Milner,

the Ninth Circuit considered an alleged federal trespass by anti-erosion structures

originally placed on privately owned tidal uplands in Washington State. The

boundary between the uplands and adjacent Indian tidelands had shifted with the

gradual change of the mean high water mark over the course of several years.

Eventually, the boundary line shifted so far that the stationary anti-erosion

structures began encroaching on the tribal tideland. In defense against a trespass

claim, the upland owners argued they lacked the intent necessary to commit a

trespass. The Ninth Circuit rejected this argument, reasoning that intent followed


                                         -20-
refusal to remove the structures despite notice of a duty to remove. That notice,

said the court, followed the United States’ demand for removal as legal title

holder. See 

      Even if we assumed the legal principles the Ninth Circuit applied in Milner

had bearing on this case, 6 they would not support Enable’s argument for a demand

element. As we have explained, Enable acquired the pipeline already knowing

the right-of-way would eventually expire. It therefore cannot—and indeed does

not—claim it lacked notice of its duty to remove or intent to maintain the

trespass.

      We thus reject Enable’s contention that the Allottees had to demand

removal of the pipeline for trespass liability to arise.

                                         ***




6
  The Milner court applied the Restatement (Second) of Torts under the
somewhat ambiguous reasoning that both federal precedent and borrowed
precedent from the State of Washington supported that application. See United
States v. Milner, 

, 1182–83 & n.6 (9th Cir. 2009). The Restatement
classifies trespass traditionally as an intentional tort, see Restatement (Second) of
Torts § 158, with “intent” meaning a “desire[] to cause consequences of” the act
in question “or . . . belie[f] that the consequences are substantially certain to
result,” 

It is worth noting, however, that the Oklahoma courts have yet
to develop a jurisprudence of intent with regard to real property trespass.
Nevertheless, because Enable has never made an issue of it, the place of intent in
Oklahoma tort law and, consequently, federal trespass law, does not bear on our
analysis.

                                         -21-
      In sum, Enable’s arguments against summary judgment fail under the

incorporated trespass law of Oklahoma. And Enable has not argued for any

conflict between that law, as we understand it, and federal policy regarding Indian

allotted land. We therefore affirm the district court’s grant of summary judgment.

      B. Permanent Injunction

      The Allottees’ success on the merits notwithstanding, Enable argues the

district court applied the wrong legal standard in determining whether to issue a

permanent injunction. According to Enable, the district court incorporated a

simplified injunction rule from Oklahoma law when it should have adhered to

basic tenants of federal equity jurisprudence. Aplt. Br. at 25–28. 7

      We agree. By failing to apply the federal courts’ traditional equity

jurisprudence to its remedy analysis, the court below committed an error of law

and thus abused its equitable discretion. Accordingly, we must reverse the

injunction order and remand for a full weighing of the equities.

      Federal district courts have the power to order injunctive relief when equity

so requires. See Signature Props. Int’l Ltd. P’ship v. City of Edmond, 

, 1268 (10th Cir. 2002). We review a district court’s exercise of that power



7
  The Allottees contend Enable forfeited this argument by failing to raise it
below. See Aple. Br. at 34–35. Our review of the briefing below, however,
reveals that Enable did not acquiesce to the Allottees’ proposed automatic-
injunction rule and instead argued for the typical four-factor analysis.

                                        -22-
for abuse of discretion only. See, e.g., 

however, a district court

abuses its discretion when it “bases its decision on an erroneous conclusion of

law.” Wyoming v. U.S. Dep’t of Agric., 

, 1227 (10th Cir. 2011)

(quoting Wilderness Workshop v. U.S. Bureau of Land Mgmt., 

,

1224 (10th Cir. 2008)).

      In this case, the district court relied primarily on Oklahoma law—with

supplemental authority from other federal courts—to conclude that “equity will

restrain [a continuing] trespass.” App. 268 (quoting Fairlawn 

). 8 As a result, it did not apply the usual four-factor test guiding federal

courts’ grant of permanent injunctive relief. See, e.g., eBay Inc. v.

MercExchange, L. L. C., 

, 391 (2006); Kitchen v. Herbert, 

, 1208 (10th Cir. 2014). Though it observed “some courts have declined to

enter an injunction when the trespass was unintentional and when the landowner”

delays objection, it did not think such issues at play in this case. App. 269. Thus,




8
  Where a refusal to remove a permanent structure effects the invasion of real
property, it constitutes a “continuing trespass” under Oklahoma law. Fairlawn

. “Continuing trespass” is not a distinct legal wrong.
Rather, the ongoing, unabating nature of certain trespasses continuously gives rise
to causes of action that the victim can sue on, and eventually can support
equitable relief. See Hughes v. Harden, 

, 427 (Okla. 1944); see also
Bradley v. Renfrow, 

, 431 (Okla. 1938) (describing an allegation of
continuing trespass as supporting pursuit of equitable relief).

                                         -23-
with no further weighing of the equities, the court ordered Enable to remove the

pipeline.

      Generally, federal courts adopt state law even when the dispute is

“governed exclusively by federal [common] law.” See United States v. Turley,

, 957 (10th Cir. 2017). “Indeed, there is a ‘presumption that state

law should be incorporated into federal common law.’” 

v.

Kemper Fin. Servs., Inc., 

, 98 (1991)). This is partly because courts

are hesitant, and for good reason, to create federal common law rules that are

“wholly the product of a federal court’s own devising.” See 

; United States v. Yazell, 

, 353 (1966) (declining to “invent” a

federal common law rule and “impose it upon the States”). Such policy, even

when applied to cases arising under federal common law rather than diversity

jurisdiction, supports “the twin aims of the Erie rule: discouragement of forum-

shopping and avoidance of inequitable administration of the laws.” Hanna v.

Plumer, 

, 468 (1965).

      But federal courts do not mechanically apply state law in every

circumstance. “Whether to adopt state law or to fashion a nationwide federal rule

is a matter of judicial policy ‘dependent upon a variety of considerations.’”

United States v. Kimbell Foods, Inc., 

, 728 (1979) (citation omitted).

And to guide this judicial policymaking, the Supreme Court has indicated that


                                        -24-
federal courts should consider (1) “whether application of state law would

frustrate specific” federal interests, (2) whether there is a “need for a nationally

uniform body of law,” and (3) other considerations such as whether “application

of a federal rule would disrupt commercial relationships predicated on state law.”

see also 

. The considerations in this case

lead us to conclude that the district court erred in applying Oklahoma rather than

federal remedial law.

      The district court erred because the circumstances presented here reveal “a

distinct need for nationwide legal standards.” 

. As already

explained, Congress provided a way for the Secretary of the Interior to approve

easements “over and across any lands . . . held in trust by the United States for

individual Indians or Indian tribes.” 25 U.S.C. § 323. This right-of-way statute

was “to help ensure that necessities such as telegraph lines and roads could

continue without encumbrance.” Pub. Serv. Co. of New Mexico v. Barboan, 

, 1105 (10th Cir. 2017). While this does not rise to the level of creating

a federal interest that federal common law should manage, the nationwide

application of this right-of-way statute suggests a need for a uniform federal

standard.

      This uniform standard is necessary because the Secretary has undoubtedly

approved easements over and across Indian land in multiple states. And since


                                         -25-
many of these easements are likely for a limited duration, these easements—for

pipelines, telecommunication lines, and roads—like the easement at issue here,

may fail to receive consent to renew by a “majority of the [equitable] interests”

and may therefore be subject to an order of removal. See 

This prospect

shows the distinct need for easement holders to be subject to the same standard

for when an equitable remedy is required and when a legal remedy is

sufficient—regardless of where the easement is located. Otherwise, an easement

holder in Oklahoma and one in Kansas could be subject to differing permanent

injunction standards despite both receiving an easement from the Secretary of the

Interior pursuant to the same federal program.

      We therefore conclude that the district court erred in failing to apply the

federal permanent-injunction standard even though it properly applied Oklahoma

trespass law. This is because our jurisprudence distinguishes between matters of

right and matters of remedy. The Supreme Court has concluded that “State law

cannot define the remedies which a federal court must give” and that “a federal

court may afford an equitable remedy for a substantive right recognized by a State

even though a state court cannot give it.” Guaranty Trust Co. of N.Y. v. York, 

, 105 (1945). Thus, the practice of borrowing state rules of decision does

not apply with equal force to determining appropriate remedies, especially

equitable remedies, as it does to defining actionable rights.


                                         -26-
      Moreover, applying the federal permanent-injunction standard differs

significantly from applying the federal common law of trespass. As explained,

federal courts lack a body of federal trespass law to protect the Allottees’ federal

property interests. So applying federal trespass law would require our court to

construct rules entirely of this court’s creation. We accordingly borrow a body of

well-developed state law to the extent it does not conflict with federal policy.

These same considerations are not present when seeking to apply federal equitable

remedies, however. Applying federal remedial law does not require this court to

create federal common law or even to “fill the interstices of federal remedial

schemes” with the court’s own rules. See 

(declining to

fashion federal rules to fill gaps in federal statutory remedial scheme); Kimbell

(same).

      This is because the federal judiciary already has a well-developed body of

law regarding equitable remedies to guide judicial discretion. The Supreme Court

has repeatedly weighed in on the standard federal courts apply when granting or

denying a permanent injunction. See, e.g., eBay Inc. v. MercExchange, L.L.C.,

547 U.S 388, 391 (2006); Amoco Prod. Co. v. Vill. of Gambell, AK, 

,

541–42 (1987); Weinberger v. Romero-Barcelo, 

, (1982). In each

case the Supreme Court set out the proper standard for granting a permanent

injunction and chastised the circuit court for granting equitable relief based solely


                                         -27-
on success on the merits. See 

–312 (“It goes without

saying that an injunction is an equitable remedy [that] . . . ‘is not a remedy which

issues as of course.’”) (citation omitted). We may therefore apply a well-

developed federal common law standard for issuing a permanent injunction that

will fulfill the “distinct need for nationwide legal standards” called for in this

case. 

.

      Thus, a federal district court’s decision to permanently enjoin a continuing

trespass on allotted land should take into account (1) whether an injunction is

necessary to prevent “irreparable harm,” (2) whether “the threatened injury

outweighs the harm that the injunction may cause” to the enjoined party, and (3)

whether the injunction would “adversely affect the public interest.” Kitchen v.

Herbert, 

, 1208 (10th Cir. 2014) (quoting Sw. Stainless, LP v.

Sappington, 

, 1191 (10th Cir. 2009)). 9 Accordingly, by ordering

Enable to remove the pipeline on the basis of liability alone, the district court

legally erred and thus abused its discretion.

      The Allottees’ attempts to escape this conclusion do not persuade us. First,

they argue the district court did not, in fact, apply a simplified rule. Instead, they



9
  We acknowledge that our circuit’s articulation of the rule differs slightly from
that of the Supreme Court in eBay. Compare 

, with

. But the subtle differences are not at issue, and we think
the two articulations capture the same considerations in any event.

                                          -28-
claim the court merely applied the usual rule to simplified facts. See Aple. Br.

35–38. But we see little support for this reading. The court below made no

mention of the appropriate equitable considerations. Indeed, it went to great

lengths to justify its analysis as legally, rather than just factually, appropriate.

      Second, the Allottees invite us to affirm the district court even if it applied

incorrect law, claiming the record clearly warrants relief regardless. See Aple.

Br. at 38–41. But though—as we have already noted—we may generally affirm a

district court order on any sufficient grounds the parties have had an opportunity

to brief, see Champagne 

, we resist that invitation. The

discretion to issue a permanent injunction in this case rests with the district court,

not us. Cf., e.g., Bailey v. State Farm Fire & Cas. Co., 

, 1191

(10th Cir. 2005). And just because we think the district court could have issued a

permanent injunction under the proper test does not mean we can ignore an error

of law and resolve the issue on appeal. “Injunctive relief is, by its very nature,

fact-sensitive and case-specific.” New Comm Wireless Servs., Inc. v. SprintCom,

Inc., 

, 13 (1st Cir. 2002). Thus our court should generally refrain from

“uphold[ing] a preliminary injunction on a ground that was not fully addressed”

below. 

we did endeavor to balance the equities ourselves, we would

not get very far. As the above makes clear, the sheer right to exclude simply


                                          -29-
cannot begin and end the equitable analysis. Cf. 

–93. And

the Allottees do not explain how the pipeline’s presence works “irreparable harm”

otherwise. 

(quoting 

).

More importantly, without further evidence—which the Allottees have never

proffered—we have no way of knowing the relative costs and benefits of Enable

removing the pipeline, either as they pertain to these parties or the public at large.

To the extent the Allottees have addressed these concerns, their arguments have

offered legal analysis in lieu of pertinent facts. See App. 120–23; Aple. Br. at

38–41. In short, we will not assume the equities support injunctive relief in this

case, or whether the district court would in fact award such relief under governing

law.

       In sum, we must remand the decision to the district court to weigh the

equities in the first instance. 10

                                     III. Conclusion

       For the reasons stated above, we AFFIRM the district court’s grant of

summary judgment to the Allottees, REVERSE the entry of the permanent

injunction, and REMAND for further proceedings.




10
  As a result, we do not reach Enable’s challenge to the district court’s
compliance with Rule 52 of the Federal Rules of Civil Procedure. See Aplt. Br. at
28–30.

                                           -30-
17-6088, Davilla v. Enable Midstream Partners
HARTZ, Circuit Judge, concurrence and partial dissent:
       Except in one respect, I am pleased to join Chief Judge Tymkovich’s opinion.

Where I differ from the panel opinion is that I would apply the state law of Oklahoma,

rather than federal law, to determine the remedy for Enable’s trespass. Because the panel

opinion covers the ground so well, my discussion can be relatively brief.

       The dispute in this case concerns about 1300 feet of natural-gas pipeline that is

part of a 100-mile pipeline between Canute and Cox City, Oklahoma, which in turn is

part of a broader 2200-mile pipeline system within Oklahoma. Plaintiffs’ claim is that

this quarter-mile pipeline segment trespasses property held in trust for them by the United

States. Because of the interest of the federal government, federal law governs. But there

is no applicable federal trespass statute, so we decide this case as a matter of federal

common law. As a general rule, federal common law regarding interests in real property

adopts the law of the state where the property is located. See United States v. Turley, 

, 956–57 (10th Cir. 2017). Transactions can be handled more expeditiously and

with greater confidence when the government’s counterparty knows it can rely on the

local law with which it (or its attorney) is familiar.

       The dispute before us, however, does require some consideration of federal

statutory law. Easements for rights-of-way over what can be described, roughly

speaking, as Indian lands must comply with 25 U.S.C. §§ 323–28, which set forth how

consent to a right-of-way must be obtained, ordinarily through approval of the majority

ownership interest of the known property owners (or tribal officials, if the land is tribal
land), see 

324. The easement for the pipeline in this case explicitly cites to those

statutory provisions. Much of the panel opinion, with which I fully agree, explains why

we believe that such consent had lapsed for the pertinent portion of Enable’s easement.

       But consent is only one element of a trespass claim. For the other elements,

Oklahoma law governs. That choice of law makes particularly good sense here. The

record does not show how much of the 100-mile pipeline or the 2200-mile pipeline

system crosses land held in trust by the United States and how much of it crosses land

that is privately owned. But all of it is within Oklahoma, and surely it facilitates

commerce to have a single legal regime govern what happens when a pipeline crosses

land without the owner’s consent. Thus, this panel unanimously agrees that Oklahoma

law governs the requirements of notice and demand to the trespasser.

       Where I depart from the majority is regarding the law governing whether a

permanent injunction should issue. In my view, we should continue to apply Oklahoma

law on that issue. As one leading treatise has stated, “Rights and remedies are closely

interrelated concepts; to deviate from the state’s definition of the latter often also would

change the former.” Wright & Miller § 4513 at 567. That statement appears in a

discussion of the Erie doctrine, explaining why in diversity cases federal courts should

ordinarily look to state law in determining what remedy is appropriate, even when

considering equitable remedies. But the point applies here as well. Once the federal

court has decided that federal common law should incorporate state law regarding a cause

of action, the same considerations should ordinarily counsel in favor of incorporating

state law regarding the remedies available for that cause of action.


                                              2
       The majority believes that there are good reasons not to follow that approach here.

The panel opinion states that there is “‘a distinct need for nationwide legal standards’”

with respect to the remedy in this case. Maj. Op. at 25 (quoting Kamen v. Kemper Fin.

Servs., Inc., 

, 98 (1991)). It points out that the federal statute at issue here

permits rights-of-way on Indian land “to help ensure that necessities such as telegraph

lines and roads could continue without encumbrance.” Pub. Serv. Co. of New Mexico v.

Barboan, 

, 1105 (10th Cir. 2017). It reasons that because the statute

applies in multiple states, fulfilling this purpose requires a uniform federal standard.

       I am not persuaded. There is certainly a federal interest in uniform national

application of the federal statutes that govern whether there has been valid consent to an

easement over Indian land. But once, as here, it has been determined that there has not

been compliance with the statute, that interest in uniformity has been served. We begin

with a “‘presumption that state law should be incorporated into federal common law.’”

United States v. Turley, 

, 956 (10th Cir. 2017) (quoting 

)). That presumption has not been rebutted here.

        I see no reason why local law should not determine what consequences flow

when the former beneficiary of an easement loses its rights to the easement. The district

court construed Oklahoma law as giving the victim of a continuing trespass an automatic

right to obtain an order requiring the trespasser to remove the offending property. In the

circumstances here, that means that Enable must remove its pipeline. What that amounts

to in practice—since removal of the pipeline apparently would not benefit the landowners

—is that the landowners have increased bargaining power in determining what Enable


                                               3
must pay to continue the easement. This is an inherent and important component of the

substantive rights provided to Oklahoma property owners. The purposes behind the

federal statutes at issue here relate only to providing a reasonable mechanism for

obtaining consent to an easement from Indian landowners. They say nothing about how

much bargaining power landowners should have in negotiating with those seeking

easements. In colloquial terms, the federal government has no dog in that fight. This is

not a case, for example, where the easement was granted under a federal condemnation

statute. In that circumstance the federal interest in having a pipeline cross the property

might weigh against requiring the former easement holder to remove the pipeline from

the burdened land. But in the present circumstance there is no such federal interest. Why

should remedial rights of Indian landowners be different from those of other landowners

who granted easements to Enable for the same pipeline? In particular, why should the

Indian landowners have less bargaining power to negotiate a new easement price than do

the other landowners, who can rely on Oklahoma state law when Enable trespasses on

their land?

       I acknowledge that there is problematic language in Guaranty Trust Co. of N.Y. v.

York, 

(1945), a diversity case. But as discussed at length in a leading

treatise, the Supreme Court’s language is obscure, and it is far from clear that federal

courts have independent authority (aside from constitutional provisions and federal rules

of procedure) to reject state equitable principles in diversity cases. See Wright & Miller

§ 4513; 

(“as a general rule, when forum state law defines the underlying

substantive right, state law also governs the availability of such equitable remedies as a


                                             4
permanent injunction”). I would refrain from incorporating the difficulty of Guaranty

Trust into federal-common-law doctrine when that doctrine appears to provide the means

to resolve the issue before us.

       Also, I respectfully disagree with the panel opinion’s view that this case is

governed by Supreme Court authority governing the availability of permanent injunctions

as a remedy for federal statutory claims, as in eBay Inc. v. MercExchange, LLC, 

, 391 (2006) (infringement suit under the Patent Act); Amoco Prod. Co. v. Vill. of

Gambell, AK, 

, 541–42 (1987) (preliminary injunction for violation of

Alaska National Interest Lands Conservation Act); and Weinberger v. Romero-Barcello,

(1982) (violation of Federal Water Pollution Control Act). In that context,

one can presume that when Congress enacts a statutory cause of action it recognizes that

traditional equitable relief is available. See 

. Here, however,

there is no federal statutory cause of action.

       I hesitate to dissent from what I consider to be a fine opinion. But we are plowing

new ground here, and I think it useful to express some of the considerations that may

counsel a different approach.




                                                 5