Mexican dual nationality: requirements and how to apply in the U.S.

Mexican dual nationality in the U.S.: everything you need to know

The Mexican dual nationality: requirements and how to apply in the U.S. is one of the most requested consular procedures by the Hispanic community. If you were born in the United States and have a Mexican father or mother, you are entitled to register as a Mexican citizen without losing your U.S. citizenship. Below we explain who qualifies, what documents you need, and how to schedule an appointment at the nearest consulate.

Who is entitled to Mexican dual nationality?

Mexico's Nationality Law, in effect since 1998, recognizes as Mexican nationals all persons born abroad who are children of a Mexican father or mother, whether by birth or naturalization. This means that:

• You can be any age: there is no minimum or maximum age limit for processing the registration.
• You do not lose your U.S. citizenship when you obtain Mexican citizenship.
• If you are Mexican and acquired U.S. citizenship before March 20, 1998, you may also recover your Mexican nationality.

Mexican consulates in cities such as Phoenix, Portland, Sacramento, San Bernardino, Houston, Seattle, Los Angeles, Kansas City, and Brownsville, among many others, carry out this procedure on a regular basis and free of charge.

Requirements to apply for Mexican dual nationality at the consulate

Although each consulate may have minor variations in its procedure, the essential documents are as follows:

Applicant's documents

• Complete U.S. long-form birth certificate: it must be the long version, showing the full names of both parents and the time of birth. The "abstract" version is not accepted. It must be issued by the Hall of Records and in good condition.
• Valid government-issued photo ID: U.S. passport, state ID, school ID, or a letter from the pediatrician (for minors). For those over 18 years of age, any valid identification that includes name and date of birth.

Documents from Mexican parents

• Mexican birth certificate of the Mexican father or mother (or both, if both are Mexican).
• Valid government-issued ID: Mexican passport, consular registration card (matrícula consular), or voter ID card (INE). If one of the parents is a foreign national, they must present their valid passport.
• Marriage certificate (if the parents are married and the marriage took place at least 180 days before the birth, or if the mother uses her married surname).

Special circumstances

• Unmarried parents: if the parents were not married before the birth, the father must appear in person or present a special notarized power of attorney authorizing his name to appear on the birth certificate.
• Adults over 18: they may complete the process without their parents by presenting their own valid ID and their parents' marriage certificate (dated at least six months before the birth).
• Deceased parent: a death certificate is required. If the father passed away and there was no marriage prior to the birth, the procedure cannot be processed at the consulate; it must be handled directly with the Civil Registry (Registro Civil) in Mexico.

Most consulates require originals and two copies of each document. The procedure is completely free of charge and, if everything is in order, the Mexican birth certificate is issued on the same day as the appointment.

How to schedule an appointment for dual nationality

All Mexican consulates in the U.S. require a prior appointment for this procedure. Scheduling is free and can be done in three ways:

• Online: through the official portal citas.sre.gob.mx. You will need to create an account and select the "Registro Civil" option.
• WhatsApp or phone: at the number +1 (424) 309-0009, available for several consulates.
• In person: some consulates, such as Sacramento, offer walk-in document review sessions (for example, Mondays from 8:00 a.m. to 1:00 p.m.) to guide applicants before the formal appointment.

The days on which new appointments are released vary by consulate. For example, in Houston they are posted on Wednesdays starting at 7:30 p.m.; in Seattle and Las Vegas, on Tuesdays; in Kansas City, on Mondays. Since demand is high, it is recommended to connect promptly on the designated day, as slots fill up quickly.

Does the birth certificate need to be apostilled?

No. It is no longer necessary to apostille the U.S. birth certificate to complete this procedure at Mexican consulates in the U.S.

The step-by-step process at the consulate

At most consulates, the procedure is divided into two stages:

1. First visit – Document review: it is not necessary for all interested parties to attend; one of the parents or the adult applicant is sufficient. If the documentation is complete, a date is assigned for the second appointment.
2. Second visit – Registration and issuance: all parties involved appear (father, mother, and/or the person being registered). Fingerprints and signatures are taken, and the Mexican birth certificate is issued the same day.

Some consulates, such as San Bernardino, may complete the entire process in a single appointment when all documentation is in order from the start.

Frequently asked questions about Mexican dual nationality

What is needed to obtain Mexican dual nationality in the United States?

You need the applicant's long-form birth certificate, a valid government-issued photo ID, and the Mexican birth certificate of the father or mother, along with their ID. If the parents are married, the marriage certificate is also required. The procedure is carried out at the nearest Mexican consulate with a prior appointment and is free of charge.

How is dual citizenship in the United States and Mexico obtained?

To obtain it, a birth registration is carried out at the Mexican Consulate in the U.S., proving that at least one of the parents is Mexican. Upon completion of the registration, a Mexican birth certificate is issued without the applicant losing their U.S. citizenship. Mexico has allowed dual nationality since 1998.

How long does it take to receive dual nationality?

If the documentation is complete and in order, the Mexican birth certificate is issued on the same day as the registration appointment. At some consulates, the process may require two visits a few days apart, depending on demand and the specific requirements of the case.

How much does the Mexican dual nationality procedure cost?

Birth registration (dual nationality) at Mexican consulates in the U.S. is completely free of charge. Scheduling an appointment is also free, whether by phone, WhatsApp, or the official portal.

Can adults apply for dual nationality on their own?

Yes. Adults over 18 can go to the consulate without their parents, presenting their own valid ID and their parents' marriage certificate (dated at least six months before their birth). If their ID shows a spouse's surname, they must also bring their own marriage certificate.

What happens if one of the parents cannot attend the consulate?

If the father cannot appear in person and the parents were not married before the birth, it is possible to authorize the procedure through a special notarized power of attorney in which the father gives his consent for his name to appear on the birth certificate. Each consulate provides the required clause format.

Schedule your appointment and start the process today

Mexican dual nationality is a birthright that strengthens your identity and expands your opportunities both in Mexico and in the U.S. If you already have your documents ready, take the next step:

• Visit citas.sre.gob.mx to book your appointment online.
• Send a WhatsApp message or call +1 (424) 309-0009.
• Check your consulate's section on consuladosmexico.us to find out the specific days on which appointments are released and the updated requirements for your location.

Remember to bring originals and two copies of each document to avoid any issues. Once everything is in order, many applicants leave the consulate the same day with their Mexican birth certificate in hand.