Birth Certificate apostille for Mexico.

Where you file decides everything. To register a Florida-born child as Mexican at the Consulate General of Mexico in Miami, the consulate asks for a certified copy and only wants an apostille when the certificate was issued in a third country; it doesn't ask for a translation of English documents. File the same birth directly with a Registro Civil in Mexico (inserción de acta extranjera) and the rules flip: apostille plus a Spanish translation by a perito traductor authorized by that state's Tribunal Superior de Justicia. Some consulates also want the long form that lists both parents.

Our general rule is a translation certified by the translator, notarized by a different notary and apostilled in Florida. Mexico is the big exception: notarios, courts and Registros Civiles usually require a perito traductor authorized by a state Tribunal Superior de Justicia instead, done in Mexico after the apostille. Mexican consulates in the U.S. generally don't ask for a translation of English documents, and SEP revalidation accepts a simple translation.