How to get double citizenship in US and Mexico?

Both the US and Mexico allow dual citizenship without losing the other. When you become a US citizen, nothing happens to your Mexican citizenship.

You just apply for US citizenship using the form N-400.

http://hispanic.com/naturalization/N-400ins.pdf

http://www.uscis.gov/files/form/n-400.pdf

I'm not sure what would happen to your Mexican citizenship if you were to become a US citizen.

I can understand why someone would want to have the benefits of dual citizenship.

I know that many people have dual citizenship as a result of birth. I read the Mexican constitution of 1917 and a person is considered a Mexican citizen if they're born within Mexican borders, or if one parent is a Mexican citizen. For example, a woman, born and raised in Florida, marries a guy who was born in Mexico to Mexican parents. They move to Cuernavaca (Mexico) and have a kid, who is born in Cuernavaca. He's a US citizen AND a Mexican citizen. Just an example.

How to acquire dual citizenship is a question that merits good legal counsel.

Have you talked to an attorney? I would talk to an immigration lawyer. It's understandable that you are interested in this option. That other poster that called you a traiter doesn't understand. You've moved to this country and started a new life but you don't want to be cut off from the country where your roots, your heritage, and your loved ones are. I have two "homes" like you, so I can understand what you're saying.

Loyalty?? Mexico is a friend of the United States... and we're their friend. We're certainly not at war with Mexico.

I think that getting some good legal advice is a good first step :-)

Some do and some dont... I do... I became a US citizen when I was 6 years old.. and as soon as I turned 18 I went to Mexico and got my dual citizenship.

Double citizenship, as you put it, is for traitors only. You can only be loyal to one of these two countries. NOT BOTH.

So which country are you a traitor too?