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Pu Osorio v. Lyons — The court recommended dismissing an immigration habeas corpus petition filed by a “next friend.”

Reported / Citable

Case
SERGIO MARCELINO PU OSORIO, Petitioner, v. TODD LYONS in his official capacity as Acting Director of United States Immigration and Customs Enforcement, Respondents.
Court
U.S. District Court — Western District of Texas
Judge
DAN N. MACLEMORE
Date Decided
June 11, 2026
Docket No.
6:26-CV-238-ADA-DNM
Topics
Habeas Corpus, Next Friend Status, Subject-Matter Jurisdiction, Failure to Prosecute

Background

Santa Cortez, proceeding pro se, filed a petition for a writ of habeas corpus as the “next friend” of Sergio Marcelino Pu Osorio, who is currently in immigration detention. The Court subsequently ordered Pu Osorio to show cause why his petition should not be dismissed for lack of subject-matter jurisdiction or struck as the unauthorized practice of law. The Court set a deadline of May 24, 2026, for Pu Osorio to respond and warned that failure to do so could result in dismissal for failure to prosecute or comply with court rules.

Despite the Court’s order, Pu Osorio failed to file a response by the May 24 deadline. By the time of this report and recommendation, two weeks had passed without any communication from Pu Osorio regarding the show-cause order.

The Court’s Holding

The United States Magistrate Judge recommended that the District Judge dismiss Pu Osorio’s petition for a writ of habeas corpus. The primary reasons for dismissal were the petitioner’s failure to respond to the Court’s show-cause order, which resulted in a failure to establish subject-matter jurisdiction, and the inability to establish proper “next friend” status for Santa Cortez.

The Court found that Cortez’s allegations—that she is Pu Osorio’s sister-in-law and that his detention causes the household financial hardship—were insufficient to “clearly establish” that Pu Osorio could not prosecute the matter on his own behalf or that Cortez was truly dedicated to his best interests. Furthermore, even if Cortez could establish next friend status, an unlicensed individual (like Cortez) cannot proceed pro se on another’s behalf without engaging in the unauthorized practice of law. Given that federal courts are courts of limited jurisdiction, and the burden to establish jurisdiction rests on the petitioner, Pu Osorio’s failure to respond to the show-cause order meant he failed to meet this burden.

Key Takeaways

  • Individuals seeking “next friend” status in habeas corpus petitions must clearly demonstrate why the petitioner cannot act on their own behalf and prove their genuine dedication to the petitioner’s best interests.
  • Unlicensed individuals cannot invoke “next friend” status to proceed pro se on another’s behalf if it constitutes the unauthorized practice of law.
  • Failure to establish proper “next friend” status or to respond to a court’s order to show cause can lead to dismissal of a habeas corpus petition due to a lack of subject-matter jurisdiction or failure to prosecute.

Why It Matters

This report and recommendation underscores the strict procedural and jurisdictional requirements for filing habeas corpus petitions, particularly when initiated by a “next friend.” It serves as a critical reminder that even in cases involving individuals in immigration detention, petitioners must actively engage with court orders and clearly demonstrate their right to proceed, especially concerning the sensitive issue of subject-matter jurisdiction.

For attorneys, this opinion reinforces the need for meticulous attention to detail regarding “next friend” standing and the prohibition against the unauthorized practice of law. It highlights that courts will rigorously scrutinize attempts to bypass legal representation rules, even for family members seeking to assist detainees.

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