Naturalized Mexican citizen.

Benefits of being a Naturalized Mexican citizen:

The benefits of this status are: you can vote, change address or jobs without having to inform the National Institute of Immigration (INM) of your every move, wait less time in immigration lines at airports, and avoid having to pay to change your immigration status and/or renew your visa each year to extend your stay in Mexico and purchase property at the beach or along the border just to name a few.

You can also apply for a Mexican passport because you really are a Mexican.

Article 32 of the Mexican Constitution states that certain political positions and jobs require that one be a natural born citizen, just like the president of the USA.

Article 35 of the Mexican Constitution gives all Mexican over 18 years of age the prerogative to vote.

Natural born Mexicans cannot be forced to give up their nationality; Naturalized Mexicans can for a variety of reasons one being living 5 continuous years or more outside of Mexico.

Becoming a Naturalized Citizen is done at SRE. (www.sre.gob.mx)

If applying under residency path a person must live in Mexico 5 years with an FM2 with three exceptions.  If you are married to a Mexican, have Mexican born children or are from a Latin American country you can apply after only 2 years with an FM2.

To qualify for Mexican citizenship a foreigner must also pass an exam which demonstartes that they have an understanding of Mexican history and culture.   The Mexico citizen questions are listed here.  Five questions are asked and 4 must be correct.  The questions change from time to time.  The web site does not say so but it is rumoured that you do not need to take the test if you are past the age of 60 years in which case you need only speak Spanish.

Other resources:

Rules for becoming a Mexican citizen updated August 26, 2010.

Copy of constitution available here.  http://www.cddhcu.gob.mx/LeyesBiblio/pdf/1.pdf

Baja Insider Article:  Immigration and naturalization process in 2010