OPINION

PAEZ, Circuit Judge:

On October 25, 2008, Damien Zepeda ("Zepeda") traveled with his brothers Jeremy and Matthew Zepeda ("Matthew") to the home of Dallas Peters ("Peters"), located on the Ak-Chin Reservation of Arizona. Zepeda and Matthew opened fire upon the house's occupants, injuring Peters severely. In a nine-count indictment, the government charged Zepeda with, inter alia, conspiracy to commit assault, assault with a deadly weapon, and use of a firearm during a crime of violence.1 The indictment alleged that Zepeda was an "Indian[]." Following a jury trial, Zepeda was convicted of all counts.

The Major Crimes Act, 18 U.S.C. § 1153, provides for federal jurisdiction for certain crimes committed by Indians in Indian country.2 The statute does not define who is an Indian, and determining the proper boundaries of federal jurisdiction over Indians is a formidable task. It is now well-settled in this circuit that we apply the two-part test articulated in United States v. Bruce, 394 F.3d 1215 (9th Cir.2005) to determine who is an Indian. We consider: (1) the defendant's degree of Indian blood, and (2) the defendant's tribal or government recognition as an Indian. Id. at 1223; United States v. Cruz, 554 F.3d 840, 845 (9th Cir.2009). More recently, we clarified that the first of these two prongs requires that the defendant's "bloodline be derived from a federally recognized tribe."3 United States v. Maggi, 598 F.3d 1073, 1080 (9th Cir.2010).

This appeal calls upon us to decide whether a Certificate of Enrollment in an Indian tribe, entered into evidence through the parties' stipulation, is sufficient evidence for a rational juror to find beyond a reasonable doubt that the defendant is an Indian for the purposes of § 1153 where the government offers no evidence that the defendant's bloodline is derived from a federally recognized tribe. We hold that it is not.

I.

At Zepeda's trial, the government introduced into evidence, as Exhibit 1, a document entitled "Gila River Enrollment/Census Office Certified Degree of Indian Blood."4 The document bore an "official seal" and stated that Zepeda was "an enrolled member of the Gila River Indian Community," and that "information [wa]s taken from the official records and membership roll of the Gila River Indian Community." It also stated that Zepeda had a "Blood Degree" of "1/4 Pima [and] 1/4 Tohono O'Odham" for a total of 1/2. The Certificate was signed by "Sheila Flores," an "Enrollment Services Processor." The prosecutor and Zepeda's attorney stipulated to admission of the Certificate into evidence without objection.5 Their stipulation stated: "The parties have conferred and have agreed that Exhibit 1 [, the Tribal Enrollment Certificate,] ... may be presented at trial without objection and [its] contents are stipulated to as fact."

The Tribal Enrollment Certificate was published to the jury through the testimony of Detective Sylvia Soliz, a detective for the Ak-Chin Police Department, who told the jury that she obtained the Certificate from the Gila River Indian Community in advance of trial, "confirming" that Zepeda was an enrolled member. The colloquy between Soliz and the prosecutor proceeded as follows:

Zepeda's brother Matthew also testified regarding Zepeda's Indian status. Matthew testified that he was half "Native American," from the "Pima and Tiho" tribes, and that his Indian heritage came from his father. He also testified that he and Zepeda shared the same father, as well as the same mother, who was "Mexican."

No further evidence regarding Zepeda's Indian status was admitted. At the close of the government's case in chief, Zepeda moved for a judgment of acquittal under Federal Rule of Criminal Procedure 29, arguing that insufficient evidence supported his convictions.6 The court denied his motion. Zepeda renewed his motion at the close of the evidence, and again, his motion was denied.

On appeal, Zepeda argues, inter alia, that the government failed to prove beyond a reasonable doubt that he was an Indian under § 1153. We agree.

II.

Indian "tribes generally have exclusive jurisdiction over crimes committed by Indians against Indians in Indian country."7 United States v. LaBuff, 658 F.3d 873, 876 (9th Cir.2011). As we explained in United States v. Begay, 42 F.3d 486 (9th Cir.1994):

Id. at 498.

To balance the sovereignty interest of Indian tribes and the United States's interest in punishing offenses committed in Indian country, Congress enacted two statutes, 18 U.S.C. §§ 1152 and 1153. Id. Section 1152, the General Crimes Act,8 grants federal jurisdiction over certain crimes committed in Indian country by non-Indians against Indians and vice versa, but excludes crimes committed by one Indian against another. Id.; LaBuff, 658 F.3d at 876. Section 1153, the Major Crimes Act,9 creates federal jurisdiction for cases in which an Indian commits one of a list of thirteen enumerated crimes in Indian country. Id. The government charged Zepeda and prosecuted him under the latter statute.

The question of Indian status operates as a jurisdictional element under § 1153. Cruz, 554 F.3d at 843; Bruce, 394 F.3d at 1228. Nonetheless, we have held that Indian status "is an element of the offense that must be alleged in the indictment and proved beyond a reasonable doubt." Maggi, 598 F.3d at 1077 (citing Cruz, 554 F.3d at 845; Bruce, 394 F.3d at 1229). We have also held that whether a defendant is an Indian is a mixed question of fact and law that must be determined by the jury.10 See Bruce, 394 F.3d at 1218, 1223, 1229; see also Maggi, 598 F.3d at 1077; Cruz, 554 F.3d at 845. Indeed, it is the special province of the jury to resolve any factual disputes arising under the two prongs of the Bruce test. See Bruce, 394 F.3d at 1223; Maggi, 598 F.3d at 1082-83; Cruz, 554 F.3d at 846-47.

"Although jurisdictional questions are ordinarily reviewed de novo, when a defendant brings a motion for acquittal in order to challenge the sufficiency of the evidence underlying a jurisdictional element, we owe deference to the jury's ultimate factual finding." Cruz, 554 F.3d at 843-44 (emphasis in original). "Accordingly... we review the district court's decision under the standard applied to sufficiency-of-the-evidence challenges: `whether, after viewing the evidence in the light most favorable to the prosecution, any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt.'" Id. at 844 (quoting Jackson v. Virginia, 443 U.S. 307, 319, 99 S.Ct. 2781, 61 L.Ed.2d 560 (1979) (emphasis omitted)); see also United States v. Nevils, 598 F.3d 1158, 1163-67 (9th Cir.2010) (en banc).

III.

A.

We first must determine whether the Tribal Enrollment Certificate was properly admitted into evidence, or rather, as Zepeda urges, whether its admission violated his rights under the Confrontation Clause. Because Zepeda did not object at trial to the district court's admission of the Certificate pursuant to the parties' stipulation, we review for plain error. United States v. Wright, 625 F.3d 583, 607 (9th Cir.2010).

"The test regarding the validity of a stipulation is voluntariness." United States v. Molina, 596 F.3d 1166, 1168-69 (9th Cir.2010). We have previously held that "`[s]tipulations freely and voluntarily entered into in criminal trials are as binding and enforceable as those entered into in civil actions.'" Id. at 1169 (quoting United States v. Technic Servs., 314 F.3d 1031, 1045 (9th Cir.2002) (alteration in original)). "`[S]tipulations serve both judicial economy and the convenience of the parties, [and] courts will enforce them absent indications of involuntary or uninformed consent.'" Id. (quoting CDN Inc. v. Kapes, 197 F.3d 1256, 1258 (9th Cir.1999) (alterations in original)). "A `defendant who has stipulated to the admission of evidence cannot later complain about its admissibility' unless he can show that the stipulation was involuntary." Id. (quoting Technic Servs., 314 F.3d at 1045).

Zepeda points to no record evidence that he entered into the stipulation at issue involuntarily. Rather, he points to a lack of record evidence that his attorney informed him of the contents of the stipulation and its legal effect, and asserts that his counsel's waiver of his Confrontation Clause rights was invalid. While his first contention is plausible, Soliz testified extensively regarding the Tribal Enrollment Certificate's contents, referring both to Zepeda's bloodline and to his eligibility for benefits from the Gila River Indian Community. This testimony at least put Zepeda on notice regarding the contents of the stipulation. Regardless, Zepeda bears the burden on appeal of pointing to record evidence showing that his consent was involuntary, and he has not done so here. See Molina, 596 F.3d at 1169.

Moreover, our case law recognizes that "defense counsel may waive an accused's constitutional rights as a part of trial strategy." United States v. Gamba, 541 F.3d 895, 900 (9th Cir.2008). Counsel's authority extends to waivers of the accused's Sixth Amendment right to cross-examination and confrontation as a matter of trial tactics or strategy. Wilson v. Gray, 345 F.2d 282, 287-88 (9th Cir.1965).

Zepeda argues that waiver of a fundamental constitutional right cannot ever constitute a sound trial strategy, particularly where, as here, the Tribal Enrollment Certificate purported to establish an essential jurisdictional element. It appears from the record, however, that Zepeda's attorney strategically focused Zepeda's defense on the implausibility of government witnesses' testimony, as compared to Zepeda's markedly different version of the relevant events. He chose not to direct the jury's attention to Zepeda's Indian status, and informed the jury during his opening statement: "I will stipulate and concede things that ought to be conceded in terms of my client, Mr. Zepeda." Although ultimately not a winning strategy, it was clearly "deliberately made as a matter of trial tactics," and did not involve a "basic trial right[]" such as the decision "whether to plead guilty, waive a jury, testify in his ... own behalf, or take an appeal." Gamba, 541 F.3d at 901 (quoting Florida v. Nixon, 543 U.S. 175, 187, 125 S.Ct. 551, 160 L.Ed.2d 565 (2004) (internal quotation marks omitted)). Nor, as we discuss at length below, was the Tribal Enrollment Certificate sufficient to carry the government's burden of proof of Zepeda's Indian status. Thus, Zepeda's attorney did not violate Zepeda's Confrontation Clause rights when he stipulated to admission of the Certificate. See Gamba, 541 F.3d at 900; Wilson, 345 F.2d at 287.

Accordingly, we conclude that the district court did not plainly err in admitting the Tribal Enrollment Certificate into evidence pursuant to the parties' stipulation.

B.

Having determined that the Tribal Enrollment Certificate was properly admitted into evidence, we turn to whether, viewing all evidence in the light most favorable to the government, any rational juror could have found beyond a reasonable doubt that Zepeda was an Indian, on the basis of the slim evidence as to both prongs of the Bruce test. We begin by explaining that the Bruce test contains an "important overlay." Maggi, 598 F.3d at 1078.

As noted, "[t]he Bruce test requires that the Government prove two things: that the defendant has a sufficient `degree of Indian blood,' and has `tribal or federal government recognition as an Indian.'" Cruz, 554 F.3d at 845 (quoting Bruce, 394 F.3d at 1223, 1224). "The first prong requires `some' Indian blood." United States v. Ramirez, 537 F.3d 1075, 1082 (9th Cir.2008) (quoting Bruce, 394 F.3d at 1223). "Thus, `evidence of a parent, grandparent, or great-grandparent who is clearly identified as an Indian is generally sufficient to satisfy this prong.'" Id. (quoting Bruce, 394 F.3d at 1223).

"The second prong requires evidence that `the Native American has a sufficient non-racial link to a formerly sovereign people.'" Id. (quoting Bruce, 394 F.3d at 1224). "Courts analyzing this prong have considered evidence of: `1) tribal enrollment; 2) government recognition formally and informally through receipt of assistance reserved only to Indians; 3) enjoyment of the benefits of tribal affiliation; and 4) social recognition as an Indian through residence on a reservation and participation in Indian social life.'" Id. (quoting Bruce, 394 F.3d at 1224). These four factors "are to be considered `in declining order of importance.'" Cruz, 554 F.3d at 846 n. 6 (quoting Bruce, 394 F.3d at 1224). "[T]ribal enrollment is `the common evidentiary means of establishing Indian status, but it is not the only means nor is it necessarily determinative'.... [E]nrollment, and indeed, even eligibility therefor, is not dispositive of Indian status." Id. (quoting Bruce, 394 F.3d at 1224-25 (some alterations in original)).

Our recent decision in United States v. Maggi made clear that "[t]here is an important overlay to the Bruce test: To be considered an Indian under ... [§] 1153, the individual must have a sufficient connection to an Indian tribe that is recognized by the federal government. Affiliation with a tribe that does not have federal recognition does not suffice." 598 F.3d at 1078 (emphasis in original).

In Maggi, we addressed the consolidated appeals of two defendants, Gordan Mann and Shane Maggi, both tried and convicted pursuant to § 1153. Mann was an enrolled member of the Little Shell Tribe of the Chippewa Cree, a tribe that was not recognized by the federal government, despite a longstanding petition for federal recognition. Id. at 1076. We noted that tribal enrollment records often include identification of an individual's percentage of Indian blood, and that this information is used to establish eligibility for enrollment. Id. Mann's enrollment record reflected his degree of Indian blood as 10/64 Chippewa and 11/64 other Indian blood. Id. Maggi's degree of Indian blood was 1/64 Blackfeet tribe, a tribe recognized by the federal government, and 1/32 Cree tribe. Id. at 1076, 1080-81. The record did not reflect whether Maggi was descended from a federally recognized group of the Cree tribe, such as the Rocky Boy Reservation Chippewa Cree, or a non-recognized group, such as the Little Shell Tribe Chippewa Cree. Id. Maggi was not an enrolled member of any tribe, though his mother's enrollment in the Blackfeet tribe entitled him to the receipt of certain limited benefits. Id. at 1076-77. Both Mann and Maggi argued in the district court that they were not subject to prosecution under § 1153 because they were not Indians. Id.

In Maggi, we commented that we had previously addressed the issue of whether prosecution under § 1153 requires membership in a federally recognized tribe in LaPier v. McCormick, 986 F.2d 303, 304-06 (9th Cir.1993). In a federal habeas petition under 28 U.S.C. § 2254, LaPier challenged his Montana state court conviction, maintaining that he should have been tried for his alleged crime in federal court under § 1153 because he was an Indian. LaPier, like Mann, was a member of the Little Shell Tribe of Chippewa Cree. Id. at 306. We reasoned that it did not need to examine whether LaPier had shown a sufficient degree of Indian blood or whether he had a sufficient connection to a tribe because he had failed to satisfy an antecedent requirement of affiliation with a federally recognized tribe:

Id. at 304-05 (internal quotation marks and citations omitted). We therefore concluded that LaPier was not entitled to habeas relief.

Maggi recognized that LaPier's threshold requirement of affiliation with a federally recognized tribe stemmed from judicial and legislative acknowledgment that federal criminal jurisdiction over Indians is not dependent on a racial classification, but upon the federal government's relationship with the Indian nations as separate sovereigns. 598 F.3d at 1078-79 (discussing LaPier, 986 F.2d at 305 ("Federal legislation treating Indians distinctively is rooted in the unique legal status of Indian tribes under federal law and upon the plenary power of Congress, based on a history of treaties and the assumption of a guardian-ward status, to legislate on behalf of federally recognized Indian tribes."), United States v. Antelope, 430 U.S. 641, 646, 97 S.Ct. 1395, 51 L.Ed.2d 701 (1977) ("[F]ederal regulation of Indian affairs is not based upon impermissible classifications. Rather, such regulation is rooted in the unique status of Indians as `a separate people' with their own political institutions.... [I]t is not to be viewed as legislation of a `racial' group consisting of `Indians'....") (quoting Morton v. Mancari, 417 U.S. 535, 553 n. 24, 94 S.Ct. 2474, 41 L.Ed.2d 290 (1974)), and Means v. Navajo Nation, 432 F.3d 924, 930 (9th Cir.2005)).

Accordingly, Maggi concluded that LaPier's requirement of affiliation with a federally recognized tribe was not altered or superseded by the test announced in Bruce, "which presupposes that `tribal or government recognition as an Indian' means as an Indian from a federally recognized tribe." Maggi, 598 F.3d at 1079 (quoting Bruce, 394 F.3d at 1223). It followed from this analysis that the first prong of the Bruce test requires "that the bloodline be derived from a federally recognized tribe." Id. at 1080; see also Ninth Cir. Model Jury Instr. No. 8.113 ("In order for the defendant to be found to be an Indian, the government must prove the following, beyond a reasonable doubt: First, the defendant has descendant status as an Indian, such as being a blood relative to a parent, grandparent, or great-grandparent who is clearly identified as an Indian from a federally recognized tribe....") (emphasis added); id. cmt. ("The question of Indian status operates as a jurisdictional element under 18 U.S.C. § 1153. `Some blood' evidence must be from a federally recognized tribe.") (citations omitted).

C.

We turn to the substance of our sufficiency of the evidence inquiry. Bruce and its progeny make clear that Indian status is an element of any § 1153 offense, and as such, that it must be alleged in the indictment and proven beyond a reasonable doubt. 394 F.3d at 1229; Maggi, 598 F.3d at 1077; Cruz, 554 F.3d at 845. We must therefore determine whether the evidence presented at trial was sufficient, drawing all inferences in the government's favor, to satisfy the threshold question identified in LaPier and Maggi, namely, whether Zepeda's bloodline is derived from a federally recognized tribe. See Cruz, 554 F.3d at 843-44.

Our inquiry contains a legal component and a factual component. The question of whether a given tribe is federally recognized is a matter of law. The question of whether the government has proven that a defendant's bloodline derives from such a tribe is a question of fact for the jury to resolve.

1.

Federal recognition of an Indian tribe is a formal political act that "permanently establishes a government-to-government relationship between the United States and the recognized tribe as a `domestic dependent nation.'" H.R. Rep. 103-781, at 2 (1994) (footnote omitted). With this understanding, we conclude that the question of whether a tribe is federally recognized is best characterized as a question of law.

Our prior cases provide guidance. In LaPier, having determined that "[i]t is ... the existence of the special relationship between the federal government and the tribe in question that determines whether to subject the individual Indians affiliated with that tribe to exclusive federal jurisdiction for crimes committed in Indian country," we stated that, "[t]o determine whether that special relationship exists — whether the United States recognizes a particular tribe — we defer `to the political departments.'" 986 F.2d at 305 (quoting Baker v. Carr, 369 U.S. 186, 215, 82 S.Ct. 691, 7 L.Ed.2d 663 (1962)) (additional citations omitted). To that end, we recognized that the Bureau of Indian Affairs had compiled and published a list of federally recognized tribes in the Federal Register pursuant to 25 C.F.R. pt. 83, which we stated "appears to be the best source to identify federally acknowledged Indian tribes whose members or affiliates satisfy the threshold criminal jurisdiction inquiry." Id. Consulting this list, we determined that LaPier was not an Indian because the tribe with which he claimed affiliation was not among the listed tribes. Id. at 306.

In United States v. Heath, 509 F.2d 16 (9th Cir.1974), we considered the effect of the Klamath Termination Act, 25 U.S.C. § 564 et seq., on the defendant's criminal conviction under § 1153, and found that federal criminal jurisdiction over the defendant was lacking because the Act terminated federal supervision over the Klamath Tribe. Id. at 19. In so holding, we explained that "[t]he Klamath Termination Act ... was intended to end the special relationship that had historically existed between the Federal Government and the Klamath Tribe. While anthropologically a Klamath Indian even after the Termination Act obviously remains an Indian, his unique status vis-a-vis the Federal Government no longer exists." Id. We therefore concluded that "18 U.S.C. § 1153 cannot serve to confer Federal jurisdiction with respect to crimes committed by terminated Klamath Indians." Id. Finally, in Maggi, discussed at length above, we found that the threshold requirement of a bloodline from a federally recognized tribe was lacking for one defendant because there was an "absence of evidence" that his bloodline derived from a recognized tribe. 598 F.3d at 1080.

This precedent, considered as a whole, reflects our recognition that there is a legal element embedded in the first prong of the Bruce test: Federal recognition is a legal status afforded to "American Indian groups indigenous to the continental United States ... that can establish a substantially continuous tribal existence and which have functioned as autonomous entities throughout history until the present." 25 C.F.R. § 83.3. The Bureau of Indian Affairs, in accordance with the governing regulations, affords the legal designation of federal recognition to those tribes that meet its criteria. See id. §§ 83.1-83.13 (noting procedures for establishing that an American Indian group exists as an Indian tribe). As we said in LaPier, "absent evidence of its incompleteness, the BIA list appears to be the best source to identify federally acknowledged Indian tribes whose members or affiliates satisfy the threshold criminal jurisdiction inquiry." 986 F.2d at 305.11

The district court did not determine whether the tribes at issue here are recognized by the federal government. On appeal, the government argues that both the "Gila River Indian Community of the Gila River Indian Reservation, Arizona" and the "Tohono O'Odham Nation of Arizona" are federally-recognized Indian tribes. We agree. We recognize, as a matter of law, that both tribes appear on the BIA's list of federally recognized tribes. See Indian Entities Recognized and Eligible to Receive Services from the United States Bureau of Indian Affairs, 73 Fed.Reg. 18,553 (April 4, 2008); 74 Fed. Reg. 40,218 (Aug. 11, 2009); 75 Fed.Reg. 60,810 (Oct. 1, 2010).

2.

Having made the legal determination that the "Tohono O'Odham Nation of Arizona" is a federally recognized tribe, we must decide whether the government presented sufficient evidence to prove that Zepeda's blood derived from that tribe.12 The Tribal Enrollment Certificate identifies Zepeda's bloodline as 1/4 Pima and 1/4 Tohono O'Odham; and Matthew's testimony described his ancestral bloodline as "Pima and Tiho." The government introduced no evidence that any of these Indian groups are a federally recognized tribe.

In essence then, the government asks us to fill in the evidentiary gap in its case. There is no evidence in the record that the "Tohono O'Odham" referenced in Zepeda's Tribal Enrollment Certificate refers to the federally recognized "Tohono O'Odham Nation of Arizona." Zepeda argues correctly that the name "Tohono O'Odham" is not on the BIA list. Further, he vigorously argues that:

Zepeda's Resp. to Gov't's Mot. to Take Judicial Notice 2-3, ECF No. 69.

"Determination of who is an Indian under [18 U.S.C. § 1153] is not as easy as it might seem." Maggi, 598 F.3d at 1075. Even under our deferential standard of review, we have vacated jury convictions for insufficient evidence of a defendant's Indian status. See, e.g., id. at 1081, 1083 (vacating two convictions); Cruz, 554 F.3d at 851 (applying an even more deferential standard of review).

In Maggi, the government introduced evidence showing that defendant Mann had the following percentages of Indian blood: "10/64 Chippewa and 11/64 `other Indian blood.'" 598 F.3d at 1076. Although we recognized that some Chippewa tribes were federally recognized, e.g. the Rocky Boy Reservation Chippewa Cree, id., we nonetheless concluded that no rational juror could have found that the Chippewa referenced in Mann's certificate of enrollment could have derived from that tribe. Nor did we think it possible that the jury could have inferred that "other Indian blood" could have referenced a federally recognized tribe. Rather, we concluded that the only rational finding a juror could make was that the Chippewa blood derived entirely from the Little Shell Tribe of the Chippewa Cree, a nonrecognized tribe in which Mann was an enrolled member. Id. at 1080. Thus, we concluded that "[g]iven the absence of evidence of any blood from a federally recognized tribe, Mann cannot meet the first prong of Bruce, and his conviction must be vacated." Id.

We confront an analogous situation here. We are not free to speculate that Zepeda's Tohono O'Odham blood is derived from the Tohono O'Odham Nation of Arizona. See United States v. Andrews, 75 F.3d 552, 556 (9th Cir.1996) (noting that "[w]hile `[c]ircumstantial evidence can be used to prove any fact, ... mere suspicion or speculation' will not provide sufficient evidence" (citation omitted)); see also United States v. Bennett, 621 F.3d 1131, 1138-39 (9th Cir.2010) (finding insufficient evidence to support a conviction); Walters v. Maass, 45 F.3d 1355, 1358-60 (9th Cir.1995) (same); United States v. Dinkane, 17 F.3d 1192, 1195-98 (9th Cir.1994) (same). Zepeda is not an enrolled member of the Tohono O'Odham Nation of Arizona and the government submitted no evidence whatsoever to connect the appellation "Tohono O'Odham" to the federally recognized Nation of Arizona. We are not free to surmise that they are one in the same, just as we were not free to speculate that some of Mann's Chippewa blood could have derived from the federally recognized Rocky Boy Reservation Chippewa Cree. Maggi, 598 F.3d at 1076, 1080; see also United States v. Ramirez, 714 F.3d 1134, 1136, 1140 (9th Cir.2013) (reversing a conspiracy charge and concluding that there was insufficient evidence to show that the defendant made an agreement to distribute meth despite the "ample proof that the defendant possessed and sold drugs" to his associate four times in one month in "escalating amounts").

Nor are we free to rely on facts outside of the record concerning the scope of the Nation of Arizona, because this evidence was not presented to the jury and could not have been relied upon by it. It is horn book law that we, as an appellate court, are limited to the record before the jury when assessing the sufficiency of the evidence. See Jackson, 443 U.S. at 317-18, 99 S.Ct. 2781 (reciting that the sufficiency of evidence "constitutional standard must also require that the factfinder will rationally apply that standard to the facts in evidence" and that "the critical inquiry on review of the sufficiency of the evidence... [must be] to determine whether the record evidence could reasonably support a finding of guilt beyond a reasonable doubt" (emphasis added)).

The jury found that Zepeda was an Indian pursuant to § 1153 in the absence of any proof that Zepeda's bloodline derived from a federally recognized tribe. Because "there is no evidence that [Zepeda] has any blood from a federally recognized Indian tribe," Maggi, 598 F.3d at 1075, we conclude that no rational juror could have found Zepeda guilty beyond a reasonable doubt of counts 2 through 9 of the indictment, the offenses predicated on § 1153, and his convictions must be vacated.

IV.

In sum, we hold that the Tribal Enrollment Certificate was insufficient to establish that Zepeda is an Indian for the purposes of federal jurisdiction under § 1153 because the government introduced no evidence that Zepeda's bloodline is derived from a federally recognized tribe. We do not suggest, in so holding, that a Tribal Enrollment Certificate may never be sufficient to meet the government's burden under the first prong of the Bruce test. Of course, future cases may present circumstances in which the Certificate itself reflects this information. But that is not the case here.

Because we hold that the government introduced insufficient evidence under the first prong of the Bruce test, we need not consider whether the Tribal Enrollment Certificate alone was sufficient to carry the government's burden as to the second prong. As to that issue, we express no opinion.

For the above reasons, Zepeda's convictions under § 1153, in counts 2 through 9 of the indictment, are REVERSED. Zepeda's conviction for conspiracy in violation of 18 U.S.C. § 371 is unaffected by this disposition.13 See Begay, 42 F.3d at 499 ("Section 371 is a federal criminal statute of nationwide applicability, and therefore applies equally to everyone everywhere within the United States, including Indians in Indian country.").

REVERSED in part and REMANDED for resentencing.

WATFORD, Circuit Judge, dissenting:

I agree with much of the majority's analysis, particularly its conclusion that whether a tribe has been recognized by the federal government is a question of law. But I disagree with the majority's ultimate determination that the government failed to present sufficient evidence from which a rational jury could infer that Zepeda has a blood connection to a federally recognized tribe. Under Jackson v. Virginia, 443 U.S. 307, 319, 99 S.Ct. 2781, 61 L.Ed.2d 560 (1979), a rational jury could certainly infer that the reference in Zepeda's tribal enrollment certificate to "1/4 Tohono O'Odham" is a reference to the federally recognized Tohono O'Odham Nation of Arizona.

Opinion by Judge PAEZ; Dissent by Judge WATFORD.