Mexican Citizenship Through Grandparents

The Legal Basis: Article 30 and the 2021 Reform

Mexican nationality by birth is defined in Article 30 of the Constitución Política de los Estados Unidos Mexicanos. Before 2021, a person born abroad was Mexican by birth only if at least one parent was a Mexican national who had been born in Mexican territory. In practice, that meant the children of Mexican-born parents qualified, but their children, the grandchildren of the original Mexican national, did not, because their parents had been born abroad.

A constitutional reform published in the Diario Oficial de la Federación on March 17, 2021 removed the requirement that the Mexican parent be born in national territory. Article 30(A)(II) now provides that persons born abroad to a Mexican mother or a Mexican father are Mexicans by birth, without regard to where the parent was born. The result is that Mexican nationality can now pass from a grandparent born in Mexico, to a parent born in the United States, to a grandchild born in the United States, so long as each link in that chain is documented.

Two other rules make this worthwhile. Since March 20, 1998, Mexico has not stripped nationality from Mexicans by birth who acquire another nationality, and Article 32 of the Constitution expressly contemplates Mexicans who hold a second nationality. And under U.S. law, acquiring a foreign nationality by descent does not jeopardize U.S. citizenship, because loss of citizenship under 8 U.S.C. § 1481 requires a voluntary act performed with the intent to relinquish it. Being recognized as Mexican through your grandparent is not such an act. Our Mexican citizenship and dual nationality page covers the general framework; this page is about the grandparent path specifically.

Who Qualifies Through a Grandparent

You are a candidate for Mexican nationality through a grandparent if all of the following are true, or can be made true:

• At least one grandparent was born in Mexico (or was otherwise a Mexican national by birth).
• Your parent, the child of that grandparent, is Mexican by birth under Article 30, which for a parent born in the United States means being registered at a Mexican consulate or civil registry as the child of a Mexican national. If that registration was never done, it usually can be done now, sometimes even after the parent has passed away.
• You were born abroad, in Texas or elsewhere outside Mexico, and can document your own birth and your relationship to that parent.

The chain must be complete and in order: grandparent to parent, then parent to you. Mexican law does not currently allow a grandchild to be registered directly from a grandparent while skipping an unregistered parent. If a link cannot be documented, other routes remain. Under Article 20 of the Ley de Nacionalidad, direct descendants of a Mexican by birth may apply for naturalization after two years of residence in Mexico rather than the usual five. Which route fits depends on your records, and that is precisely what an eligibility review sorts out.

When a parent has died, or is unwilling to participate, the analysis changes but the door does not necessarily close. Consulates and civil registries have procedures for registering the birth of a deceased person on the petition of a descendant, with additional documentation such as the death certificate. These cases are decided individually and benefit from counsel who has handled them before.

Documents You Will Need

The file for a grandparent-based claim is longer than for a first-generation registration because it proves two generations of descent. Expect to gather:

• Your grandparent’s Mexican birth certificate. This is commonly a difficult document to obtain. If you do not have it, we can review available information to make sure we meet requirements.
• Your parent’s birth certificate from the U.S. state of birth, apostilled by that state (for Texas births, the Texas Secretary of State).
• Your own birth certificate, apostilled.
• Any documents explaining name changes or adoptions.
• Current government photo identification for you and your parent.

The Mexican Civil Registry applies its own translation and formatting rules, and small differences in spelling, accents, or the order of surnames between one document and the next are the most common reason a file is sent back. We review every record against every other record before your case is filed.

Common Complications

The grandparent's acta cannot be found. Births in rural Mexico were sometimes recorded late, in a neighboring municipality, or under a slightly different name. Locating and correcting the record through the Registro Civil is often the first real task in the case.

Names do not match across documents. María de los Ángeles on one record and María Ángeles on another can stop a registration. Depending on the discrepancy, the fix may be an administrative correction in Mexico, a Texas court order, or an amendment to a birth certificate when applicable.

A parent born in the U.S. was registered late, or never. Late registration is normal and does not disqualify anyone, but it adds a step and additional evidence.

Dual Nationality and Your U.S. Citizenship

Recognition as a Mexican national does not affect your U.S. citizenship, your U.S. passport, or your right to vote, though anyone who holds a security clearance should report the second nationality. As a dual national you must enter and leave the United States on your U.S. passport, and Mexico expects Mexicans to enter and leave Mexico as Mexicans. Service members and their families should also review any service-specific reporting rules; as a veteran-owned firm we raise this in every intake involving military families, alongside military parole in place and the other options that exist for military families.

What Mexican Nationality Gives You

• The right to live, work, and study in Mexico without visas or immigration permits, and to pass nationality on to your own children.
• Direct ownership of property in the restricted zone near coasts and borders, without a bank trust (fideicomiso).
• Access to Mexican public services, including the public health system, and eligibility for Mexican universities at national tuition rates.
• Business and investment flexibility, including ownership structures that are closed or restricted to foreign nationals.
• A Mexican passport, a CURP, and the ability to vote in Mexican elections from abroad.

Our Process

How We Handle a Grandparent-Based Claim

Timelines depend mostly on records. When the grandparent’s birth certificate is in hand and the parent is already registered, a case can move fast, often a few weeks. When records must be located or corrected in Mexico or in the U.S., or a parent must be registered first, plan on a longer path. We give you a realistic schedule at the first meeting and update it as records arrive.

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Hire a Board-Certified Immigration Attorney

Fewer than five percent of Texas immigration attorneys are Board-Certified in Immigration and Nationality Law by the Texas Board of Legal Specialization. Attorney Alfredo Lozano holds that distinction, and since founding the firm in 2006 he has brought a Marine Corps veteran's discipline, more than 20 years of immigration experience, and a fully bilingual team to every case the firm handles.

Our approach combines personalized counsel with the documentation rigor these cases demand, so your petition is prepared correctly the first time. Board Certification means the state has independently verified his experience, tested his knowledge, and confirmed his standing among peers, which is the kind of assurance that matters when your family's future is on the line.

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Our team includes experienced attorneys, legal professionals, and client-care specialists who share a common commitment: making the immigration process as clear and manageable as possible for every family we serve.

Alfredo Lozano

Managing Attorney

Board-Certified in Immigration and Nationality Law and a Marine Corps veteran who leads every case strategy.

Linda Hamilton

Attorney

Guides families and employers through petitions, waivers, and interviews with steady, detailed advocacy.

Minerva Gonzalez

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Prepares documentation and keeps every case organized, accurate, and moving forward.

Mayra Juarez

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Coordinates case management and client communication across our three Texas offices.

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Serving Mexican-American Families in San Antonio, Eagle Pass, and San Angelo

Few places in the country have as many families with a Mexican grandparent as South and West Texas. San Antonio is home to more than 940,000 residents of Mexican origin, Eagle Pass sits directly across the river from Piedras Negras, and San Angelo families often trace their roots to Chihuahua, Coahuila, and Nuevo León. Many of our grandparent-based clients are third-generation Texans: professionals and business owners who want the freedom to work, invest, or retire in Mexico, and parents who want their own children to inherit the nationality.

Alfredo Lozano attended ITESM in Monterrey and interned with the Mexican Consulate in Houston, and our entire team works in Spanish and English, which matters when the documents on the table were issued in two countries.

Find Out Whether Your Grandparent Makes You Mexican

Bring what you know: your grandparent's full name and place of birth, your parent's birth certificate, and your birth certificate. We will tell you whether the chain can be completed, what is missing, and how long it should take.

Schedule your consultation with The Lozano Law Firm, a veteran-owned, bilingual practice with offices in San Antonio, Eagle Pass, and San Angelo. Alfredo Lozano is Board Certified in Immigration and Nationality Law by the Texas Board of Legal Specialization and a member of the American Immigration Lawyers Association. You can also read about dual citizenship generally or learn about the firm.

Mexican Citizenship Through Grandparents FAQs

Lozano Law Firm focuses exclusively on the practice areas listed above. We do not handle asylum or criminal immigration cases. When clients come to us with needs outside our scope, we refer them to trusted colleagues who specialize in those areas. Our referral network includes attorneys who handle asylum claims and criminal immigration consequences, so every person who contacts us receives direction toward the right help.

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