Hi Gila, it's easy to get it, basically you have to take some ground school about ICAO requirements, it take you around 4 months in any mexican aviation school, after that you have to get a Medical Certificate and proving your mexican citizenship you can get the mexican Comercial License, it could be good if you get your Instrument ticket in the States before (cheaper) 'cause is kinda requirement to get a job in Mexico. PM me if you wanna get some job contacts or more info.
Cheers
