According to theMexican copyright law(23-07-2003), Article 14, case 7 & 8: "Copyright shall not apply to shields, flags or emblems of any country, state, municipality or political division; or names, acronyms, symbols or emblems of international governmental organisations, or any other organization officially recognized. The legislative, regulatory, administrative or judicial, as well as their official translation."
Hence it is assumed that this image has been released into the public domain.
To add your language to the list of languages supported by this template, please copy the code of Template:PD-MX-exempt/en (or any other language version you prefer to translate) and replace the text strings in there (the form below can be used to create a translation, the English version is preloaded in the edit box). Please change the parameter lang from en (or whatever language you are translating) to the language code of your language.