I don't understand how a Mexican crew, who normally there are familiar with the Mexican airspace and the Mexican airports, landed in the wrong airport... I'm sure that they fly to Monterrey many times ago in the past, so they should recognize that they was landing in another field... overall doing a Visual APP !
Anyway, I'm really sorry that they can lose their license. Losing the license is one of the nightmares of any pilot.
Cheers