Статья 30. Цепочка из пяти реформ (1934 + 1969 + 1974 + 1997 + 2021) — Кардениста → Гран Насьон Транстерриториальный

CPEUM Art 30 has been reformed five times since the 1917 constitutional promulgation, each reform reflecting a distinct political era and nationalities policy philosophy. The reform chain is: original 1917 text → (1ª) DOF 1934-01-18 (Cardenista era) → (2ª) DOF 1969-12-26 (gender equity extension) → (3ª) DOF 1974-12-31 (marriage transmission refinement, largely superseded) → (4ª) DOF 1997-03-20 EIF 1998-03-20 (dual-nationality enabling) → (5ª) DOF 2021-05-17 EIF 2021-05-18 (Gran Nación Mexicana Transterritorial — unlimited generational jus sanguinis).

Reform 1 (DOF 1934-01-18 — Cardenista era): The first major post-revolutionary nationality reform under the Lázaro Cárdenas administration framework (published under Abelardo Rodríguez but reflecting the Cardenista political program). This reform established the foundational structure of Art 30 that persists today: Apartado A (por nacimiento — born on Mexican territory or born abroad to Mexican parents) and Apartado B (por naturalización). The 1934 reform's jus soli provision was notably broad: anyone born on Mexican territory was Mexican por nacimiento without qualification for the parents' immigration status or nationality — a provision that remains operative today as Art 30 A fr I (the broadest absolute jus soli in the T1+ cohort, documented in MX-BTH-01). The 1934 reform was implemented by the Ley de Nationalidad y Naturalización DOF 1934-04-20.

Reform 2 (DOF 1969-12-26 — Gender equity): Extended jus sanguinis transmission through the maternal line. Under the 1917 and 1934 texts, jus sanguinis operated through the paternal line; the 1969 reform established that the mother could transmit Mexican nationality to children born abroad where the father was foreign or absent. This reform reflected international human rights developments (the 1957 Convention on the Nationality of Married Women, which Mexico ratified) and preceded the 1979 CEDAW by a decade.

Reform 3 (DOF 1974-12-31 — Marriage transmission refinement): A technical reform addressing the transmission of nationality through marriage — largely superseded by the 1997 dual-nationality reform and the Ley de Nacionalidad 1998, which established the marriage-based naturalization pathway (Art 20 fr II Ley) separate from direct nationality transmission.

Reform 4 (DOF 1997-03-20 EIF 1998-03-20 — Dual-nationality enabling): The core dual-nationality reform documented in MX-HIS-02. With respect to Art 30 specifically, the 4th reform restructured the Apartado A / Apartado B distinction and enabled Mexican nationals to hold foreign nationalities without losing Mexican nationality. The 4th reform also introduced the concept of the 1997-era jus sanguinis limitation: the Mexican parent transmitting nationality to a child born abroad was required to have been born in Mexico (or naturalized), and first-generation abroad children had to establish residency to retain nationality — a limitation that the 5th reform eliminated.

Reform 5 (DOF 2021-05-17 EIF 2021-05-18 — Gran Nación Mexicana Transterritorial): The most structurally significant reform since 1997. The 5th reform (Decreto DOF 2021-05-17) eliminated the residency requirement that had required first-generation-abroad Mexicans to establish residence in Mexico to retain por-nacimiento status, and expanded Art 30 Apartado A fracción II to allow unlimited generational jus sanguinis transmission: a child born abroad to a Mexican parent who was themselves born abroad (and previously would not have qualified as Mexican por nacimiento) now acquires Mexican nationality por nacimiento automatically. This was the operative implementation of the "Gran Nación Mexicana Transterritorial" concept — the Mexican state's acknowledgment that its diaspora (37+ million persons in the United States alone, per Pew 2021 data) constitutes a transnational community of birthright nationals regardless of how many generations removed from Mexican territory.

The 5th reform's impact is profound: Mexican por-nacimiento status now passes through unlimited generations abroad, as long as descent from a Mexican national can be established. This makes Mexico's jus sanguinis one of the most expansive in the T1+ cohort — comparable in generational depth to Italian jure sanguinis (before Legge 74/2025 limited it to two generations) but operating through the por-nacimiento jus soli anchor rather than a pure descent chain.

• 1st reform: DOF 1934-01-18 (broad jus soli + paternal jus sanguinis; Lázaro Cárdenas era framework)
• 2nd reform: DOF 1969-12-26 (gender equity — maternal jus sanguinis transmission)
• 3rd reform: DOF 1974-12-31 (marriage transmission refinement — largely superseded)
• 4th reform: DOF 1997-03-20; EIF 1998-03-20 per Art Primero Transitorio (dual-nationality enabling; part of International Law Transition Trifecta)
• 5th reform: DOF 2021-05-17; EIF 2021-05-18 (Gran Nación Mexicana Transterritorial — unlimited generational jus sanguinis; Art 30 A fr II expanded)
• Source of record: SCJN compilación oficial de 5 reformas Art 30 CPEUM + Cámara de Diputados DOF archive
• Current operative text: Art 30 Apartado A (por nacimiento: fr I absolute jus soli on territory + fr II jus sanguinis unlimited generations) + Apartado B (por naturalización: frs I-III)
• Authority: Congreso Constituyente Permanente (amendment procedure per Art 135 CPEUM)

Primary statute: SCJN compilación oficial 5 reformas Art 30 CPEUM: (1ª) DOF 18-01-1934 [Cardenista — BROAD jus soli + paternal jus sanguinis]; (2ª) DOF 26-12-1969 [gender equity — mother could transmit]; (3ª) DOF 31-12-1974 [refinement marriage transmission — SUPERSEDED]; (4ª) DOF 20-03-1997 EIF 1998-03-20 [dual-nationality enabling]; (5ª) DOF 17-05-2021 EIF 2021-05-18 [Gran Nación Mexicana Transterritorial — multi-gen]. Operative period: 1934-01-18 → 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.