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No. 10354087
United States Court of Appeals for the Ninth Circuit
Martinez Santoyo v. Boyden
No. 10354087 · Decided March 11, 2025
No. 10354087·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
March 11, 2025
Citation
No. 10354087
Disposition
See opinion text.
Full Opinion
FOR PUBLICATION
UNITED STATES COURT OF APPEALS
FOR THE NINTH CIRCUIT
JOSE TRINIDAD MARTINEZ No. 24-1967
SANTOYO,
D.C. No.
2:23-cv-00447-
Petitioner - Appellant,
DJC-JDP
v.
LASHA BOYDEN, U.S. Marshal for
the Eastern District of CA; MINDY OPINION
MCQUIVEY, Chief, U.S. Probation
Office for the Eastern District of CA;
MERRICK B. GARLAND, Attorney
General; ANTONY J. BLINKEN,
Respondents - Appellees.
Appeal from the United States District Court
for the Eastern District of California
Daniel J. Calabretta, District Court, Presiding
Argued and Submitted February 10, 2025
San Francisco, California
Filed March 11, 2025
Before: John B. Owens, Lawrence VanDyke, and Anthony
D. Johnstone, Circuit Judges.
Opinion by Judge Owens
2 MARTINEZ SANTOYO V. BOYDEN
SUMMARY *
Extradition
Affirming the district court’s denial of a habeas corpus
petition challenging an order certifying the petitioner’s
extradition to face charges in Mexico, the panel held that the
“lapse of time” language in the extradition treaty between
the United States and Mexico does not incorporate the Sixth
Amendment Speedy Trial Clause.
The panel addressed other arguments in a concurrently
filed memorandum disposition.
COUNSEL
Carolyn M. Wiggin (argued) and Rachelle Barbour,
Assistant Federal Public Defenders; Heather E. Williams,
Federal Public Defender; Federal Public Defender’s Office,
Sacramento, California; for Petitioner-Appellant.
Elliot C. Wong (argued) and Alstyn Bennett, Assistant
United States Attorneys; Nirav K. Desai, Assistant United
States Attorney, Appellate Chief; Phillip A. Talbert, United
States Attorney; Office of the United States Attorney,
Sacramento, California; for Respondents-Appellees.
*
This summary constitutes no part of the opinion of the court. It has
been prepared by court staff for the convenience of the reader.
MARTINEZ SANTOYO V. BOYDEN 3
OPINION
OWENS, Circuit Judge:
Jose Trinidad Martinez Santoyo appeals from the denial
of his petition for a writ of habeas corpus, which challenged
an order certifying his extradition to face charges in Mexico.
He argues that the district court erred in holding that the
extradition treaty between the United States and Mexico,
Extradition Treaty, U.S.-Mex., May 4, 1978, 31 U.S.T.
5059, did not incorporate the U.S. Constitution’s Sixth
Amendment Speedy Trial Clause. 1 We have jurisdiction
under 28 U.S.C. § 1291 and § 2253, and we affirm.
I. BACKGROUND
In January 2014, a judge in Mexico issued an arrest
warrant for intentional aggravated homicide alleging that
one month earlier, Santoyo shot a man twice in the head after
a heated argument. In November 2018, Mexico requested
that the United States provisionally arrest Santoyo. In
accordance with the governing extradition treaty, the United
States filed a complaint in the Eastern District of California
in August 2021, seeking a provisional arrest of Santoyo with
a view towards extradition. Santoyo was arrested on May
12, 2022, and he remained in custody until November 4,
2022, when he was released on bail pending resolution of his
extradition proceedings.
1
Santoyo also argues that the district court erred in upholding the
extradition court’s finding of probable cause, excluding a forensic report,
and denying his motion to compel certain discovery. We address these
arguments in a concurrently filed memorandum disposition, in which we
affirm.
4 MARTINEZ SANTOYO V. BOYDEN
In July 2022, Mexico formally requested Santoyo’s
extradition for aggravated intentional homicide.
Accompanying this request were the 2014 arrest warrant,
eyewitness statements, a police investigative report, and an
autopsy report. After extensive litigation, a magistrate judge
certified the extradition on February 24, 2023.
Santoyo then challenged that certification via a petition
for writ of habeas corpus. Relevant to this opinion, he
argued that the Sixth Amendment’s speedy trial right applied
to the extradition proceedings, as the treaty prohibited
extradition when the prosecution “for which extradition has
been sought has become barred by lapse of time according
to the laws of the requesting or requested Party.” Extradition
Treaty art. 7. Santoyo contended that the “lapse in time”
language necessarily incorporated a speedy trial right, and
the delay between the issuance of Mexico’s arrest warrant in
January 2014 and the July 2022 formal extradition request
mandated his release.
A different magistrate judge recommended rejecting that
argument, and the district court agreed. Citing case law from
several circuits (including ours), the district court held that
the “lapse in time” language only referred to a statute of
limitations, and not to the Sixth Amendment’s speedy trial
protections. And because there was no alleged statute of
limitations problem, the extradition could proceed. Santoyo
timely appealed from the denial of his habeas petition.
II. DISCUSSION
A. Standard of Review
“We review de novo the district court’s denial of a
habeas petition in extradition proceedings.” Rana v. Jenkins,
113 F.4th 1058, 1063 (9th Cir. 2024) (citation omitted). Our
MARTINEZ SANTOYO V. BOYDEN 5
review is “severely limited.” Id. (citation omitted). “We can
review only ‘whether: (1) the extradition magistrate judge
had jurisdiction over the individual sought, (2) the treaty was
in force and the accused’s alleged offense fell within the
treaty’s terms, and (3) there is any competent evidence
supporting the probable cause determination of the
magistrate judge.’” Id. (citation omitted).
B. Extraditions and the U.S.-Mexico Treaty
“Extradition is a matter of foreign policy entirely within
the discretion of the executive branch, except to the extent
that the [extradition] statute interposes a judicial function.”
Vo v. Benov, 447 F.3d 1235, 1237 (9th Cir. 2006) (citation
and alteration omitted); see also 18 U.S.C. § 3184 (federal
extradition statute). Because extradition is a diplomatic
process, the judiciary’s role in extradition proceedings is
very narrow. See United States v. Knotek, 925 F.3d 1118,
1132 (9th Cir. 2019).
Extradition proceedings begin when the country seeking
extradition files a request with the State Department.
Patterson v. Wagner, 785 F.3d 1277, 1279 (9th Cir. 2015).
If the United States initiates judicial proceedings to extradite
an accused in accordance with its treaty obligations, the
extradition court must then hold an extradition hearing to
determine whether to certify the accused for extradition. Id.
As part of its review, it must determine whether there is
probable cause to sustain the charge. Id. at 1279–80. If there
is probable cause, the extradition court must certify the
extradition to the Secretary of State, who ultimately
determines whether to extradite the accused to the requesting
state. Id.
We have emphasized that extradition hearings are not
trials, Prasoprat v. Benov, 421 F.3d 1009, 1014 (9th Cir.
6 MARTINEZ SANTOYO V. BOYDEN
2005), mini trials, see Santos v. Thomas, 830 F.3d 987, 992,
1007 (9th Cir. 2016) (en banc), nor “dress rehearsal[s] for
trial,” Oen Yin-Choy v. Robinson, 858 F.2d 1400, 1407 (9th
Cir. 1988) (citation omitted). Rather, they are “designed
only to trigger the start of criminal proceedings against an
accused; guilt remains to be determined in the courts of the
demanding country.” Sainez v. Venables, 588 F.3d 713, 717
(9th Cir. 2009) (citation omitted).
Here, the United States and Mexico have agreed to
extradite those who have been charged with murder.
Extradition Treaty, art. 1, 2(a). The treaty includes a “Lapse
of Time” section, which provides: “Extradition shall not be
granted when the prosecution or the enforcement of the
penalty for the offense for which extradition has been sought
has become barred by lapse of time according to the laws of
the requesting or requested Party.” Extradition Treaty, art.
7.
C. The Treaty Does Not Encompass a Sixth
Amendment Speedy Trial Right
For more than forty years, the law on delay in extradition
hearings has been clear: While a “delay in seeking
extradition may be relevant to the Secretary of State’s final
determination as to whether extradition may go forward . . .
[t]he delay may not, however, serve as a defense to judicial
extradition proceedings.” Kamrin v. United States, 725 F.2d
1225, 1227 (9th Cir. 1984); cf. Munaf v. Geren, 553 U.S.
674, 698–99 (2008) (principles of comity and respect for
foreign sovereigns may preclude courts from scrutinizing
their actions). The language in question—“lapse of time”—
does not alter this long-standing presumption.
As a preliminary matter, the Sixth Amendment’s text
does not support its application to extradition proceedings.
MARTINEZ SANTOYO V. BOYDEN 7
It provides, “[i]n all criminal prosecutions, the accused shall
enjoy the right to a speedy and public trial.” U.S. Const.
amend. VI (emphasis added). An extradition proceeding is
not a criminal prosecution. See Martinez v. United States,
828 F.3d 451, 457 (6th Cir. 2016) (en banc) (noting
extradition proceedings “are not ‘criminal prosecutions’”);
Sabatier v. Dabrowski, 586 F.2d 866, 869 (1st Cir. 1978)
(“[C]haracterizing [extradition] proceedings as ‘criminal
prosecutions’ within the meaning of the sixth
amendment . . . goes against the weight of authority and
ignores the modest function of an extradition hearing.”); see
also Santos, 830 F.3d at 992 (noting extradition proceedings
are not criminal trials “intended to ascertain guilt,” and
“neither the Federal Rules of Evidence nor the Federal Rules
of Criminal Procedure apply” (citation omitted)). Rather,
extradition is a diplomatic process by which the United
States adheres to its treaty obligations by sending an
individual sought by the requesting state to be prosecuted in
that state. See Patterson, 785 F.3d at 1279 (“[E]xtradition is
a diplomatic process carried out through the powers of the
executive, not the judicial, branch.” (citation omitted)).
Even if an extradition treaty could provide for American
constitutional protections, the plain text of this treaty does
not incorporate the Sixth Amendment. “The interpretation
of a treaty, like the interpretation of a statute, begins with its
text.” Medellín v. Texas, 552 U.S. 491, 506 (2008). As
Santoyo argues, the treaty includes a “lapse of time”
provision, which implicates some sort of time bar. However,
lapse of time alone does not establish a Sixth Amendment
violation. This is because the speedy trial right does not
prescribe a specific length of time and is context dependent.
See Barker v. Wingo, 407 U.S. 514, 521 (1972) (“[T]he right
to speedy trial is a more vague concept than other procedural
8 MARTINEZ SANTOYO V. BOYDEN
rights. It is, for example, impossible to determine with
precision when the right has been denied.”).
Therefore, to determine whether there has been a
deprivation of the Sixth Amendment speedy trial right,
courts must balance the length of the delay with other factors
including “the reason for the delay, the defendant’s assertion
of his right, and prejudice to the defendant.” Id. at 530.
These factors are not exclusive, and none, including the
length of delay, is “either necessary or sufficient,
individually, to support a finding that a defendant’s speed[y]
trial right has been violated.” United States v. Mendoza, 530
F.3d 758, 762 (9th Cir. 2008).
Because the Sixth Amendment right to a speedy trial
does not bar prosecution or the enforcement of a penalty
solely on the basis of a “lapse of time,” the plain text of the
treaty does not incorporate the Sixth Amendment or the
balancing test required by the Supreme Court. See Martinez,
828 F.3d at 457–58 (“Because the Sixth Amendment does
not establish a time limit, fixed or otherwise, before a trial
must start, it does not create a rule that ‘bar[s]’ criminal
prosecutions due to ‘lapse of time.’”). As the Sixth Circuit
noted en banc when considering the same argument under
the same treaty provision, Santoyo’s arguments “require us
to add something to the Sixth Amendment that does not exist
(a time bar)” and “to subtract requirements of the Sixth
Amendment that do exist,” such as the reason for the delay.
Id. at 458.
In addition, an extradition court cannot consider the
Barker and other relevant factors without exceeding its
limited scope of review. The weighing of these factors
would inevitably result in the very mini trials that we have
cautioned against as “[t]he resolution of a speedy trial claim
MARTINEZ SANTOYO V. BOYDEN 9
necessitates a careful assessment of the particular facts of the
case.” United States v. MacDonald, 435 U.S. 850, 858
(1978) (noting “most speedy trial claims . . . are best
considered only after the relevant facts have been developed
at trial”); see also Santos, 830 F.3d at 991 (“It is fundamental
that the person whose extradition is sought is not entitled to
a full trial at the magistrate’s probable cause hearing.”
(citation omitted)).
Crucially, the court would need to consider the reason
for the delay, and consequently, compel a foreign sovereign
to justify its actions and otherwise explain why the balance
of factors weighs against a finding of a speedy trial violation.
See Yapp v. Reno, 26 F.3d 1562, 1568 (11th Cir. 1994) (“A
speedy trial inquiry would require [the extradition court],
generally unfamiliar with foreign judicial systems and the
problems and circumstances facing them, to assess the
reasonableness of a foreign government’s actions in an
informational vacuum.”); cf. McNeely v. Blanas, 336 F.3d
822, 827 (9th Cir. 2003) (“[T]he prosecution bears the
burden of explaining pretrial delays.”). However, “[f]oreign
states requesting extradition are not required to litigate their
criminal cases in American courts.” Santos, 830 F.3d at 991.
As such, the accused “does not have the right to introduce
evidence in defense because that would require the
government seeking his extradition ‘to go into a full trial on
the merits in a foreign country.’” Id. at 992 (citation
omitted). Similarly, incorporating the Sixth Amendment
would require the requesting state to litigate the merits of the
speedy trial claim in the United States, which runs counter
to the “principle[s] of comity” and “[r]espect for the
sovereignty of other countries” which underpin the
objectives of international extradition treaties. Martinez,
828 F.3d at 464 (citation omitted).
10 MARTINEZ SANTOYO V. BOYDEN
As the Sixth Circuit recognized, there is also the
“question of fault.” Id. In its speedy trial inquiry, the
extradition court may need to consider whether an accused
waived his Sixth Amendment right by evading the
requesting state. United States v. Myers, 930 F.3d 1113,
1119 (9th Cir. 2019) (“When a defendant causes a post-
indictment delay, the defendant is deemed to have waived
the right to a speedy trial.”); see also Martinez, 828 F.3d at
464 (“Whether the State or a defendant is more to blame for
untoward delays is ‘[t]he flag all litigants seek to capture’ in
a speedy-trial case.” (citation omitted)).
The parties to the treaty, a Senate Committee report,
courts, and the Restatement (Third) of Foreign Relations
Law also have consistently read the “lapse of time” language
as a statutes of limitations bar. “Because a treaty ratified by
the United States is ‘an agreement among sovereign
powers,’ we [may] consider[] as ‘aids to its interpretation’
the negotiation and drafting history of the treaty as well as
‘the postratification understanding’ of signatory nations.”
Medellín, 552 U.S. at 507 (citation omitted). In addition, “[a]
construction of a treaty by the political department of the
government, while not conclusive upon courts called upon
to construe it, is nevertheless of weight.” United States v.
Lombera-Camorlinga, 206 F.3d 882, 887 (9th Cir. 2000) (en
banc) (citation omitted).
Here, the United States has interpreted the “Lapse of
Time” article as encompassing only statutes of limitations
and has construed its obligations as requiring extradition
when “the applicable statutes of limitations [are] complied
with.” Similarly, while Mexico includes the relevant statutes
of limitations and its compliance thereof in its formal
extradition request, it does not mention any purported
speedy trial requirement.
MARTINEZ SANTOYO V. BOYDEN 11
The Senate Committee on Foreign Relations’ report on
the extradition treaties with various countries, including
Mexico, also reads the “lapse of time” provision as a statute
of limitations provision. See S. Exec. Rep. No. 105-23
(1998). The report includes a section titled “Lapse of Time,”
which provides that “[s]ome of the treaties include rules that
preclude extradition of offenses barred by an applicable
statute of limitations.” Id. at 6. The report does not include
any discussion of the Sixth Amendment or speedy trial
rights. See generally id.; see also Yapp, 26 F.3d at 1567
(noting the Senate Executive Report on the extradition treaty
between the United States and the Bahamas provided that the
“lapse in time” provision “requires that the requested state
deny extradition if the requesting State’s statute of limitation
bars the prosecution of the offense in question” (citation
omitted)).
Courts have likewise read the “lapse of time” language
in extradition treaties as statutes of limitations bars. See
Martinez, 828 F.3d at 462 (noting “[e]very case on the books
has concluded that [the ‘lapse of time’] phrase encompasses
only statutes of limitations”) (collecting cases). Though we
have not explicitly addressed the precise issue in this appeal
before, we have, at least in passing, read “lapse of time”
provisions as statute of limitations provisions. See, e.g.,
Caplan v. Vokes, 649 F.2d 1336, 1340–42 (9th Cir. 1981)
(reading the “lapse of time” provision as a statute of
limitations provision); Theron v. U.S. Marshal, 832 F.2d
492, 499 (9th Cir. 1987) (interpreting the “lapse of time”
section as “establish[ing] the federal statute of limitations as
the appropriate statute of limitations”), abrogated on other
grounds by United States v. Wells, 519 U.S. 482 (1997).
Furthermore, “it has long been settled that United States
due process rights cannot be extended extraterritorially.”
12 MARTINEZ SANTOYO V. BOYDEN
Kamrin, 725 F.2d at 1228. In accordance with this principle,
we have rejected other attempts to incorporate the Speedy
Trial Clause into extradition treaties. For example, we
rejected the argument that a broad treaty provision “granting
fugitives ‘the right to use such remedies and recourses as are
provided by the law of the requested Party,’ . . . in effect
impose[d] upon [the requesting state] the duty to comply
with the speedy trial and due process clauses of the United
States Constitution.” Matter of Extradition of Kraiselburd,
786 F.2d 1395, 1398 (9th Cir. 1986). We explained that,
“despite the ‘remedies and recourses’ provision in the treaty,
[the requesting state’s] only obligation was to comply with
the applicable statute of limitations.” Id. (citation omitted).
Our holding today is consistent with this precedent.
The Restatement (Third) of Foreign Relations Law also
lends support. It includes a section about “Extradition and
periods of limitation,” and notes that “[n]early all extradition
treaties provide for the effect of the passage of time.”
Restatement (Third) of Foreign Relations Law § 476(e)
(1987). It explains that “under some treaties extradition is
precluded if either state’s statute of limitations has run,”
though “[i]f the treaty contains no reference to the effect of
a lapse of time, neither state’s statute of limitations will be
applied.” Id.; see also Yapp, 26 F.3d at 1567 (citing the
Restatement (Third) of Foreign Relations Law to note “the
fact that for over a century, the term ‘lapse of time’ has been
commonly associated with a statute of limitations
violation”); Martinez, 828 F.3d at 463 (also citing the
Restatement (Third) of Foreign Relations Law in support).
In sum, we join the Sixth and Eleventh Circuits in
Martinez and Yapp and hold that the extradition treaty’s
“lapse of time” language does not incorporate the Sixth
Amendment Speedy Trial Clause. “To the extent there was
MARTINEZ SANTOYO V. BOYDEN 13
a delay, this is a matter left for the Secretary of State’s
consideration.” Man-Seok Choe v. Torres, 525 F.3d 733,
741–42 (9th Cir. 2008).
AFFIRMED.
Plain English Summary
FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT JOSE TRINIDAD MARTINEZ No.
Key Points
01FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT JOSE TRINIDAD MARTINEZ No.
02Marshal for the Eastern District of CA; MINDY OPINION MCQUIVEY, Chief, U.S.
03Calabretta, District Court, Presiding Argued and Submitted February 10, 2025 San Francisco, California Filed March 11, 2025 Before: John B.
04BOYDEN SUMMARY * Extradition Affirming the district court’s denial of a habeas corpus petition challenging an order certifying the petitioner’s extradition to face charges in Mexico, the panel held that the “lapse of time” language in the e
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FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT JOSE TRINIDAD MARTINEZ No.
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