Unreported / Non-Citable
Background
This consolidated action involves plaintiffs seeking federal recognition as members of the San Pasqual Band of Diegueño Mission Indians. The parties are briefing cross-motions for summary judgment on plaintiffs' Fifth Amended Complaint. The San Pasqual Band, also called the Tribe, moved for leave to file an amicus curiae brief in support of the United States' motion for summary judgment, arguing that the relief plaintiffs seek could disrupt the Band's internal social and economic relations and implicate its sovereign immunity.
The United States did not oppose the Tribe's motion but asked for an opportunity to respond to the amicus brief. Plaintiffs opposed, arguing that the Tribe failed to satisfy Federal Rule of Appellate Procedure 29, that the Tribe's interests were identical to the United States' interests, and that the Tribe's arguments were moot because certain causes of action had been dismissed. Plaintiffs separately filed an ex parte motion to appear via Zoom or telephonically, to which no one responded.
The Court’s Holding
The court granted the Tribe's motion for leave to file an amicus brief. It applied the standard that an amicus must merely show that its participation is useful or otherwise desirable, and it found that the Tribe's motion and brief substantially complied with Rule 29. The court rejected plaintiffs' objection that the Tribe failed to state its interest, because the Tribe articulated strong governmental interests in adjudication that could affect its internal social, economic, and membership affairs. The court likewise found that the Tribe adequately explained why its brief was desirable and relevant, including its distinct perspective and the possible implication of sovereign immunity.
The court also rejected plaintiffs' corporate-disclosure argument under Rule 29(a)(4)(A) because plaintiffs offered no evidence that the Tribe is a corporation, and the Tribe affirmatively stated that no outside person or entity funded the brief. As to Rule 29(a)(4)(D), the court acknowledged that the proposed brief did not expressly state the source of authority to file, but treated that as an understandable consequence of lodging the brief before leave was granted. The court ordered the Tribe to file a corrected brief by October 22, 2026, stating that the brief is filed by leave of court, with no other substantive changes.
The court further held that the Tribe's interests are not necessarily the same as the United States' interests: the Tribe focuses on self-governance and internal relations, while the United States focuses on defending its administrative blood-degree decision. The court found the Tribe's challenges not entirely moot because plaintiffs continue to pursue at least some relief related to the Third Cause of Action. The court therefore granted amicus leave, vacated the October 29, 2026 hearing on that motion, denied plaintiffs' ex parte remote-appearance motion as moot, ordered the corrected brief, amended the briefing schedule, and continued the summary-judgment hearing to February 25, 2027.
Key Takeaways
- District courts have broad discretion to appoint amici curiae and commonly rely on Federal Rule of Appellate Procedure 29 even though the Federal Rules of Civil Procedure do not directly govern amicus motions.
- An entity seeking amicus status in district court must merely show that its participation is useful or otherwise desirable; there are no strict prerequisites to qualifying.
- A tribe's governmental interests in matters affecting its internal social and economic relations, including membership, can satisfy Rule 29(a)(3)(A)'s requirement to state its interest in the litigation.
- When a proposed amicus brief omits the Rule 29(a)(4)(D) source-of-authority statement, a court may order a corrected brief rather than deny leave outright.
- Citing another party's brief does not prove identical interests, and a tribe's self-governance interests may be distinct from the United States' interest in defending its administrative decision.
Why It Matters
The order illustrates the permissive district-court standard for amicus participation, especially where the proposed amicus is a tribal government whose sovereign interests may be affected by the requested relief. The court's pragmatic choice to allow a corrected brief instead of denying leave shows that minor technical shortcomings do not necessarily defeat a useful amicus filing.
The decision also underscores that tribes may bring a distinct perspective to federal-recognition and membership litigation even when the United States is a party, because the Tribe's interests in self-governance and internal affairs are not automatically aligned with the federal government's litigation position.