Temporary Custody Participation Does Not Constitute Hague “Acquiescence”; Habitual Residence Is Fixed at the Date of Wrongful Retention

I. Introduction

Giguere v. Tardif (1st Cir. Aug. 17, 2026) is a Hague Convention return case arising from a cross-border marital breakdown between two Canadian citizens, Tommy Giguere (petitioner-father) and Stacy Tardif (respondent-mother). The family moved from Quebec to Massachusetts in December 2022 on E-2 non-immigrant visas tied to their employment with a family-owned business expanding into the United States. In late August 2024, the relationship fractured. Tardif kept the children in Massachusetts and prevented a planned visit to Canada. Giguere sought relief under the Hague Convention on the Civil Aspects of International Child Abduction and the International Child Abduction Remedies Act, seeking the children’s return to Canada.

The appeal centered on three issues: (1) whether the district court clearly erred in finding the children’s habitual residence was Canada as of the alleged wrongful retention date; and whether Tardif established any of three Hague defenses—(2) the now-settled doctrine, (3) consent, or (4) acquiescence—particularly in light of Giguere’s participation in Massachusetts divorce proceedings and temporary parenting arrangements.

II. Summary of the Opinion

The First Circuit affirmed the return order. Applying the Hague Convention’s focus on the child’s habitual residence “immediately before the removal or retention” (Hague Convention, art. 3), and the Supreme Court’s totality-of-the-circumstances framework in Monasky v. Taglieri, the court upheld the district court’s finding that Canada remained the children’s habitual residence on August 28, 2024 (the wrongful retention date).

The court also rejected Tardif’s defenses:

  • Now-settled: unavailable because Giguere filed within one year of the wrongful retention; the court further corrected Tardif’s conflation of “now-settled” with habitual-residence “acclimatization.”
  • Consent: no showing that Giguere consented to retention in Massachusetts beyond a trial relocation.
  • Acquiescence: no “clear and unequivocal” post-retention agreement by Giguere allowing Massachusetts to decide final custody; temporary custody stipulations and participation in divorce litigation did not suffice.

A concurring opinion (Lipez, J.) highlighted a forward-looking doctrinal point: when a non-retaining parent clearly agrees to let a state court decide final custody, the better label may be waiver of Hague Convention rights rather than “acquiescence,” though the panel did not decide any waiver question.

III. Analysis

A. Precedents Cited

1. Habitual residence and the totality-of-the-circumstances approach

  • Monasky v. Taglieri, 589 U.S. 68 (2020): The controlling framework. The First Circuit treated habitual residence as a mixed question but reviewed this case under clear-error principles because the dispute was predominantly factual. Monasky supplied: (i) the definition of habitual residence as where a child is “at home,” (ii) the principle that no single fact is dispositive, and (iii) the instruction to focus the inquiry on the time of removal or retention.
  • Redmond v. Redmond, 724 F.3d 729 (7th Cir. 2013): Cited via Monasky for the “common sense,” fact-sensitive nature of the inquiry.
  • Taglieri v. Monasky, 907 F.3d 404 (6th Cir. 2018) and Mozes v. Mozes, 239 F.3d 1067 (9th Cir. 2001): Mentioned in the opinion’s background discussion of the circuit split Monasky resolved—acclimatization emphasis versus parental intent/shared intent.
  • Mendez v. May, 778 F.3d 337 (1st Cir. 2015): Provided the petitioner’s prima facie elements under Article 3 and reflected the First Circuit’s prior tendency to consider acclimatization in limited circumstances.
  • Rodrigues v. Silveira, 141 F.4th 355 (1st Cir. 2025): Reiterated the Hague Convention’s function is not to decide custody but to determine the proper forum by restoring the status quo and deterring forum shopping.
  • Karkkainen v. Kovalchuk, 445 F.3d 280 (3d Cir. 2006): Cited for the Convention’s purposes and forum-shopping deterrence.

2. Standards of review and deference

  • da Costa v. de Lima, 94 F.4th 174 (1st Cir. 2024) and ST Eng'g Marine, Ltd. v. Thompson, Maccoll & Bass, LLC, P.A., 88 F.4th 27 (1st Cir. 2023): Used to articulate the “definite and firm conviction” formulation of clear-error review, reinforcing appellate restraint in fact-bound Hague determinations.

3. The presumption of return and narrow defenses

  • Avendano v. Balza, 985 F.3d 8 (1st Cir. 2021) and Darín v. Olivero-Huffman, 746 F.3d 1 (1st Cir. 2014): Supported the strong presumption of return and the narrow construction of defenses; Darín also supplied key formulations for consent/acquiescence and emphasized unequal bargaining power as relevant to the acquiescence inquiry.
  • Nicolson v. Pappalardo, 605 F.3d 100 (1st Cir. 2010): The central acquiescence precedent. It distinguished temporary custody arrangements from a formal submission to final custody adjudication in the forum state. The First Circuit used Nicolson to reject the idea that temporary stipulations or defensive state-court participation amount to acquiescence.
  • Baxter v. Baxter, 423 F.3d 363 (3d Cir. 2005): Quoted (through First Circuit precedent) to frame “consent” as focused on petitioner conduct before removal/retention, and to reinforce policy concerns about forum shopping.
  • da Silva v. de Aredes, 953 F.3d 67 (1st Cir. 2020): Cited for the “now settled” (or “well settled”) defense framework and the one-year filing rule.
  • Larbie v. Larbie, 690 F.3d 295 (5th Cir. 2012): Distinguished as inapposite because it involved prolonged Texas custody litigation and a late Hague filing—circumstances far closer to a true submission to state-court final jurisdiction than the temporary arrangements here.

4. Interpretive sources

  • Hague International Child Abduction Convention; Text and Legal Analysis, 51 Fed. Reg. 10494-01 (Mar. 26, 1986): Used both to explain the wrongful removal/retention distinction and to emphasize that exceptions are narrow and courts retain discretion to order return even if an exception applies.

B. Legal Reasoning

1. Time-of-inquiry rule: habitual residence is assessed “immediately before” retention

The court treated Article 3’s temporal instruction as decisive in policing the evidentiary boundary: habitual residence is determined based on facts up to August 28, 2024, not on later developments. This was crucial to rejecting Tardif’s effort to rely on post-retention assimilation in Massachusetts. The panel framed this as faithful adherence to both the treaty text and Monasky v. Taglieri.

2. Totality-of-the-circumstances and the weight of parental intent in young-child cases

Consistent with Monasky, the court accepted that parental intent is relevant, especially for young children. But it rejected the claim that the district court “unduly” focused on parental agreement. The district court’s analysis was upheld precisely because it canvassed multiple objective factors, including:

  • Immigration status: E-2 visas are non-immigrant and renewal is discretionary, undercutting permanence.
  • Economic anchoring and work patterns: Giguere’s frequent travel to Quebec and continued Canadian economic ties.
  • Documentation and formal indicia: retention of Canadian driver’s licenses; diverging Canadian residency forms.
  • Community and family ties: extended family concentrated in Quebec; limited Massachusetts social embedding beyond daycare/pediatric care typical for small children.
  • Language: children’s bilingual development; father’s limited English integration.
  • Possessions/home: personal belongings in Massachusetts favored Tardif, but the court found it outweighed by other factors.

The court’s key point was not that shared intent is required, but that the district court permissibly found (i) no shared intent to abandon Canada permanently and (ii) the objective circumstances did not show Massachusetts had become the children’s “home” in a manner “more than transitory” by the retention date.

3. Defenses: strict prerequisites and categorical boundaries

a. Now-settled defense is unavailable when the petition is filed within one year

The panel treated the one-year filing requirement as a threshold bar: because Giguere filed in January/February 2025, less than one year after August 28, 2024, the “now-settled” defense could not be invoked. It also clarified the doctrinal difference between:

  • Acclimatization (a possible habitual-residence factor, but only up to the time of removal/retention), and
  • Now-settled (a defense that looks to the child’s circumstances at a later time, but only if the petition is filed after one year).
b. Consent requires pre-retention permission to the challenged retention

Applying Nicolson v. Pappalardo and Darín v. Olivero-Huffman, the court held that consenting to a trial move, or to living in Massachusetts conditionally, is not consent to retention once one parent seeks to return to the habitual-residence country. The record supported that Giguere consistently objected to staying permanently and sought return.

c. Acquiescence requires clear, unequivocal post-retention acceptance

The opinion’s most practically significant treatment is its insistence that defensive participation in divorce proceedings and agreement to temporary custody arrangements—particularly under conditions where the retaining parent controls passports, access, and home entry—does not meet the Hague Convention’s demanding standard for acquiescence. The court emphasized:

  • The absence of any clear agreement that Massachusetts would decide final custody;
  • The temporary, time-limited nature of the stipulations;
  • Giguere’s counterclaim explicitly sought removal to Canada;
  • A stay of custody issues pending the Hague proceeding.

This application reinforces a functional rule: a parent may engage in interim state-court measures to preserve access and avoid default without forfeiting the Convention’s return remedy—unless their conduct clearly crosses into an unequivocal submission to final forum adjudication.

4. Concurrence: conceptual separation between “acquiescence” and “waiver of Hague Convention rights”

The concurrence does not create a holding but offers an important analytic refinement. It proposes that where a non-retaining parent “agree[s] to let a state court decide final custody” (language drawn from Nicolson v. Pappalardo), the more precise characterization is waiver of Hague Convention rights, not “acquiescence” to retention. The concurrence’s policy concern echoes the Convention’s forum-shopping deterrence (as described in Karkkainen v. Kovalchuk) and aligns with the Fifth Circuit’s fact pattern in Larbie v. Larbie, while stressing that temporary custody participation should not be treated as waiver.

C. Impact

The decision’s immediate precedential force is likely to be felt in three recurring Hague litigation contexts:

  • Temporal discipline in habitual-residence evidence: litigants cannot bootstrap post-retention settlement facts into habitual residence, and “acclimatization” arguments must be pinned to the removal/retention date.
  • Clear boundary between “now-settled” and “acclimatization”: courts can dispose of the now-settled defense early when the one-year prerequisite is not met, preventing evidentiary sprawl into later child-adjustment facts.
  • Higher practical protection for left-behind parents forced into interim state proceedings: negotiating temporary parenting time or responding to divorce filings will not, without more, amount to acquiescence. This reduces strategic leverage for retaining parents to create a paper trail suggesting acceptance while controlling access and passports.

The concurrence may shape future doctrinal development in the First Circuit by encouraging litigants and district courts to plead and analyze waiver distinctly from Article 13(a) acquiescence—potentially clarifying what conduct constitutes a true surrender of the Convention’s forum remedy.

IV. Complex Concepts Simplified

  • Habitual residence: not a technical domicile test; it is where the child is “at home,” assessed by real-life facts (living situation, stability, ties) and measured at the moment just before removal/retention.
  • Wrongful retention: keeping a child beyond the scope of permission or in breach of custody rights—often by refusing to return the child or blocking an agreed trip.
  • Totality of the circumstances: courts consider many factors; no single indicator (like where belongings are) automatically controls.
  • Acclimatization vs. now-settled: acclimatization informs habitual residence but only up to the retention date; now-settled is a defense that looks later, but only if the petition is filed after one year.
  • Consent vs. acquiescence: consent concerns what the left-behind parent allowed beforehand; acquiescence concerns what they clearly accepted afterward—and generally demands clearer, more formal proof.
  • Clear error review: the appellate court will not reweigh evidence; it reverses only if the factfinding is plainly mistaken.
  • E-2 non-immigrant visa: a temporary U.S. work/investment-based status that may signal limited permanence when assessing whether a family truly “settled” in the United States.

V. Conclusion

Giguere v. Tardif reaffirms a rigorous Hague Convention methodology: habitual residence is decided on the facts as of the wrongful retention date, using Monasky v. Taglieri’s totality-of-the-circumstances approach, and defenses are narrowly applied. The opinion provides concrete guidance that (i) the now-settled defense is categorically unavailable when the petition is filed within one year, (ii) a “trial” relocation does not equal consent to permanent retention, and (iii) temporary custody participation in state divorce proceedings does not, without a clear and unequivocal submission to final custody adjudication, constitute acquiescence. The concurrence further signals an emerging conceptual distinction—important for future cases—between Article 13(a) acquiescence and a potential waiver of Hague Convention rights when a parent truly agrees to final state-court forum resolution.