Усыновление (освобождение от безгражданства) (ст. 20 fr I a) segundo párrafo — освобождение от налога на жительство)

Art 20 fracción I literal a) segundo párrafo of the Ley de Nacionalidad (added by reform DOF 2012-04-23) creates a residence exemption for a narrow but important category: second-degree adopted descendants of Mexican-by-birth nationals who face statelessness risk because their original nationality was not recognized at birth or their rights are not acknowledged in their country of origin. This provision functions as a domestic anti-statelessness safeguard operating entirely within Mexican law, without any corresponding treaty obligation under the 1961 Statelessness Convention (to which Mexico is NOT a party).

The 2012 reform was the fourth and final amendment to the Ley de Nacionalidad 1998. Its addition of this second paragraph to literal a) reflects a targeted legislative response to statelessness scenarios arising from intercountry adoption chains — specifically cases where an adopted child's country of origin either strips nationality upon adoption or fails to confer it in the first place, leaving the child without any recognized nationality. By providing a residence exemption (rather than the standard 2-year residency requirement of Art 20 fr I a) first paragraph), the provision accelerates access to Mexican nationality for this vulnerable group.

Mexico is a Contracting Party to the Hague Convention on Intercountry Adoption 1993 (ratified 1994-09-14, entry into force 1995-05-01, with declarations nos. 6, 17, 21, 22, 28, and 34). The Hague Convention framework governs the protective standards for intercountry adoption procedures, while the Ley de Nacionalidad Art 20 fr III (covered under MX-ADP-01) addresses the standard 1-year residency naturalization for adopted minors. The Art 20 fr I a) segundo párrafo exemption is a distinct and more expedited track for the statelessness-specific scenario.

• Applicant is a 2nd-degree adopted descendant (adopted grandchild in line descending from a Mexican-por-nacimiento grandparent, or adopted child of a person who was themselves adopted by a Mexican-por-nacimiento person)
• AND at least one of: (a) the applicant has no other nationality recognized by any state, OR (b) the applicant's nationality rights were not recognized at birth in the country of origin
• Standard Art 20 fr I a) requirements otherwise apply: lineage documentation linking applicant to a mexicano por nacimiento ancestor; renunciation oath (Art 17); examinations (unless exempt)
• Residence exemption: the standard 2-year residency requirement of literal a) first paragraph is waived for qualifying statelessness cases under second paragraph

MX eligibility framework (ADP): bucket-specific anchored in CPEUM Art 30 (Apartado A jus soli + Apartado B jus sanguinis) + Ley de Nacionalidad 1998 (DOF 1998-01-23, última reforma DOF 2012-04-23) + Reglamento DOF 2009-06-17 (Calderón). Constitutional ceiling CPEUM Art 30/32/37.

1. Obtain DIF certification of the intercountry adoption chain and documentation of statelessness status or non-recognition of nationality rights in country of origin
2. Compile documentary evidence: adoption decree(s) at each generational link, country-of-origin documentation showing non-recognition or absence of nationality, lineage chain to Mexican-por-nacimiento ancestor
3. Submit to SRE-DGAJ with explicit citation of Art 20 fr I a) segundo párrafo; include statelessness documentation as the basis for residence exemption
4. SRE-DGAJ evaluates documentary package; SEGOB-INM opinion (even with residence exemption, procedural opinion is typically sought)
5. SRE-DGAJ may require apostillated documents for foreign adoption decrees (DOF junio 2024 CNDOC Arts 314 + 1144 apostilla elimination applies to Mexican nationality-acreditando documents; foreign adoption decrees may still require authentication per country-of-origin practice)
6. Carta de Naturalización issued upon approval

Filing authorities: SRE-DGAJ. MX procedure (ADP): SRE-DGAJ + RENAPO + Registro Civil estatal operational; CPEUM Art 30/32/37 + Ley de Nacionalidad 1998 (última reforma DOF 2012-04-23) + Reglamento DOF 2009-06-17 framework; CURP Biométrica reform DOF 2025-07-16.

• Primary statute: Ley de Nacionalidad 1998 Art 20 fr I literal a) segundo párrafo (added DOF 2012-04-23) — residence exemption for 2nd-grade adopted descendants if no other nationality OR rights not recognized at birth
• Related provision: Art 20 fr III (MX-ADP-01) — standard 1-year residency naturalization for adopted minors; this route is for the statelessness exemption subset only
• Treaty context: 1954 Statelessness Convention (MX acceded 2000-06-07); Hague Adoption Convention 1993 (MX ratified 1994-09-14); CRC Art 7 (MX ratified 1990); CPEUM Art 4 párrafo 8 (right to identity)
• Operative period: 2012-04-23 → present (prior to this date, no statutory residence exemption existed for this category)
• Authority: SRE-DGAJ + DIF (Sistema Nacional para el Desarrollo Integral de la Familia — adoption certification authority)
• Documentary burden: high (adoption paperwork + statelessness evidence chain)

Primary statute: Ley de Nacionalidad 1998 Art 20 fr I a) segundo párrafo (added DOF 2012-04-23) — residence exemption for 2nd-grade adopted descendants if no other nationality OR rights not recognized at birth. Operative period: 2012-04-23 → present. Mexican citizenship legal framework: Constitución Política de los Estados Unidos Mexicanos (CPEUM) Art 30, 32, 37 primary constitutional framework — Art 30 nationality acquisition (Apartado A jus soli + Apartado B jus sanguinis); Art 32 dual-citizenship + Mexican-by-naturalization restrictions; Art 37 ciudadanía + nacionalidad loss framework. Constitutional anchor: CPEUM is the longest-continuous-single-text constitution globally (since 1917-02-05); Apartado A fracción I textually preserved across reforms 1934/1969/1974/1997/2021. Implementing statute: Ley de Nacionalidad 1998 (DOF 1998-01-23; última reforma DOF 2012-04-23). Implementing regulation: Reglamento de la Ley de Nacionalidad DOF 2009-06-17 (Calderón sexenio — NOT 2014). Key recent reforms: Art 30 multi-generational jus sanguinis reform DOF 2021-05-17 (Sheinbaum-era); Indigenous Originario framework DOF 2024-09-30 reforming Art 2 + 27 + 73 (CPEUM); Oaxaca Usos y Costumbres 417-418 SNI framework. Treaty anchors: ILO 169 (Mexico 2nd globally ratifier, 1990-09-05 after Norway 1990-06-19); 1933 Montevideo denuncia trifecta (1997-2000 — Inter-American Citizenship Treaties withdrawal); ICJ Avena 2004 (Mexico v USA — consular notification); Treaty of Guadalupe Hidalgo 1848 (territorial cession + nationality transition framework). NOT party to 1961 Stateless Convention. Apex: Suprema Corte de Justicia de la Nación (SCJN) — Pleno + Primera Sala + Segunda Sala. Indigenous parallel framework distinct.