How to Travel with 2 Passports: Mexican-American Dual Citizenship Guide. 

Everyone wants a picture holding two passports, but what after that? Being a citizen of two nations means having the equal rights, and responsibilities in both. It comes with perks while going abroad, such as having access to 2 different embassies, and visa free entry to more countries for tourism purposes. However, it can get confusing at times. Do I have to keep both of my passports all the time? When do I use each? Can I use both at the same time? 

We’ll cover the basics of does and don’ts for traveling abroad with a US and a Mexico passport. 

From which passport to show at your home country to key tips for traveling abroad. 

How To Leave the US and Mexico

According to the US Department of State, “U.S. nationals, including U.S. dual nationals, must use a U.S. passport to enter and leave the United States. U.S. dual nationals may also be required by the country of their foreign nationality to use that country’s passport to enter and leave that country.”

However, you can show your American ID or Passport to the TSA agents to prove your US nationality, and possibly your Mexican passport if it provides more benefits for your destination. If we take into account the current geopolitical climate between Mexico and the US, we advise you to use your US passport to exit the country. 

The same rules apply to Mexico; use your Mexican passport and ID to leave the country.

How To Enter the US and Mexico

Yes, you must use your American passport to enter the country. This is non-negotiable. Keep in mind that the United States requests a visa for most countries and it would complicate your itinerary if you try to explain that you have dual citizenship or multiple citizenships. Therefore, avoid any delays, and always use your US passport to exit or enter the country.

The same rules apply to Mexico; use your Mexican passport and ID to enter the country.

Key Point: Never show the two passports to a gate agent. It is not necessary. 

What Passport Should I Use Abroad?

It’s no secret that certain destinations have benefits for specific passports. If your destination has great diplomatic relationships with your Mexican passport you should use it there. For example, Mexican citizens can stay in Japan for up to 6 months with no visa requirements. 

On the other hand, if the destination requires a visa for your Mexican passport, you must use your US passport to enter and leave that country. 

A quick Google search might save you from trouble abroad. Always research the benefits or disadvantages of your US and Mexican passports in your destination. For example, going into Iran or Lebanon with a Mexican passport is best for you, as there is a Mexican embassy in both countries to grant you their services and protection. 

On the other hand, visiting Canada with your US passport is the go-to move since Mexican citizens must have a Visa to enter the country. 

Do I Need to Travel with 2 Passports?

Yes, you do. Even though you only show your US passport to re-enter and enter the United States, having 2 passports allows you access to 2 countries' embassies and consular assistance in cases of emergency. Moreover, in countries that have no American embassy, such as Pakistan, Iraq, Lebanon, and others, your Mexican passport grants you more protection due to their bad diplomatic relations with the US. 

Key Point: Always register both of your passports when purchasing a flight on an airline’s website. If it just allows one passport, use the one that benefits you the most in your destination. 

Can I Use Global Entry, SENTRY, and TSA PreCheck as a Dual Citizen?

Yes, you can use Global Entry and SENTRI as a dual citizen, but you must disclose all of your nationalities to U.S. Customs and Border Protection (CBP). You should add your other passport to your Trusted Traveler Program (TTP) account by updating your profile online, which may require a video interview. 

 

List of Countries That Grants Mexican Citizens Entry with no Visa. 

You can find the full list of countries if you click here. 

List by VisaIndex.com

 

What Are the Benefits of Mexican Dual Citizenship?

Tax Benefits

One of the most compelling financial advantages is the tax treaty between the USA and Mexico. The treaty is designed to avoid double taxation on income earned in either country. This means you can choose the country in which you pay taxes, optimizing your tax obligations. For instance, Mexico’s lower tax rates on certain income brackets might be a more attractive option for some. You can benefit from this once you become a dual citizen. It is a myth that double taxation is mandatory in 2025.

However, navigating tax systems in two countries can be complex. Consulting with a tax advisor who understands both U.S. and Mexican laws is crucial to make the most of these benefits. You can learn more about the U.S.-Mexico Tax Treaty and its implications [here].

Healthcare System

It is no secret that the United States is known for its unsustainable healthcare system. Studies affirm that more than 500,000 people file for medical bankruptcy yearly. Most Americans who earn minimum wage fear a medical emergency, since this could mean a drastic change in their life trajectory not only emotionally, but financially.

After you become a dual citizen, you receive a CURP (Clave Única de Registro de Población). It is the equivalent of a Social Security number. This unique mix of letters and numbers allows you to access all the benefits of any other Mexican citizen.

Accessible Education

Student loans, college debt, and financing plans are foreign concepts for millions of Mexicans. In 2024, 1,247,090 students enrolled in public universities on Mexican soil. These institutions offer quality education, and students receive it for free or at a very low cost.

There are more than 900 public universities in Mexico, including autonomous, technological, polytechnic, intercultural, and pedagogical institutions, among others. Private schools are also an option. They are more accessible to the public and do not rely solely on donations from private companies.

Where Can I Apply for Mexican Dual Citizenship?

Contact DNEXPRESS and book a free consultation. We’ve handled more than 4,000 cases in 2025 alone, helping people secure their plan B in the motherland. Maybe your case was rejected at your local consulate, or you’re simply missing a few documents. We can assist you –  a free review of your documents will answer your questions and could change your life.