Register US-born child for Mexico dual nationality

Children born in the United States to Mexico-citizen parents are entitled to dual nationality — US citizenship by birthright (14th Amendment) and Mexico citizenship by descent. To exercise the Mexico citizenship, you register the child’s birth at the nearest Mexico consulate.

This procedure is widely used — every year, thousands of US-born children of Mexico parents are registered for dual nationality, mostly for future travel, family visits, and to preserve cultural and economic ties.

Why register your US-born child

Registering provides the child with:

  • A Mexico birth registration certificate (an official civil-registry document of Mexico)
  • Eligibility to apply for a Mexico passport (often same consulate, separate appointment)
  • Right to live, work, study, and inherit property in Mexico without immigration restrictions
  • Eligibility for Mexico-specific education programs (scholarships, university admissions reserved for citizens)
  • Healthcare access in Mexico as a citizen
  • Inheritance rights from Mexico-citizen grandparents and other relatives

Dual nationality — confirmed lawful by both countries

The United States permits dual nationality. Per the US Department of State: “A U.S. citizen may acquire foreign citizenship by marriage, or a person naturalized as a U.S. citizen may not lose the citizenship of the country of birth. U.S. law does not mention dual nationality or require a person to choose one citizenship or another.”

Mexico also permits dual nationality with the US. Both passports can be held simultaneously.

Required documents

To register your US-born child as a Mexico citizen:

  • Child’s US birth certificate (long-form, certified copy with raised seal — sometimes apostilled is required by the consulate)
  • Mexico passport of the Mexico-citizen parent(s) (current and valid)
  • Marriage certificate of parents (apostilled if applicable)
  • Parents’ photo ID (current state ID, driver license, or passport)
  • US proof of address (utility bill, lease, or bank statement less than 3 months old)
  • Recent photo of the child (passport-style, often taken at consulate)
  • Completed registration application (download from consulate or fill at appointment)
  • Fee — none; registering a US-born child is free (there is no consular fee for the birth registration)

Step-by-step process

  1. Schedule appointment at your local Mexico consulate (online portal)
  2. Gather documents per checklist above
  3. Apostille the US birth certificate if required by your consulate (see apostille process)
  4. Attend appointment with the child present (most consulates require the child to be physically there)
  5. Submit documents — registration is free; there is no consular fee for the birth registration
  6. Wait for processing — Same-day registration in most consulates; civil registry record issued in 2-8 weeks
  7. Receive Mexico birth registration certificate — this is the child’s official Mexico civil-registry document
  8. Apply for Mexico passport (optional, separate appointment) using the new birth registration

Children born outside marriage (and other family configurations)

Each country has its own rules for transmission of citizenship by descent. Some require the Mexico-citizen parent to register the birth within a specific time period (e.g., before the child turns 18); some require both parents to be Mexico citizens; some have additional rules for adopted children, surrogacy, or children born outside marriage. Verify your specific situation directly with the Mexico consulate before the appointment.

After registration

Once the child’s Mexico citizenship is registered:

  • The child can be issued a Mexico passport (separate consular appointment)
  • Use the Mexico passport when entering Mexico
  • Use the US passport when entering the US
  • This is the standard dual-national travel pattern

When the child is older, they can register to vote in Mexico elections from abroad if Mexico allows it.

Authoritative sources

Last verified: 2026-07-04. General procedural information for educational purposes. Citizenship-by-descent rules vary by country and change. Verify directly with the Mexico consulate before traveling. Not legal advice.