This affinity is so blatant that sometimes I wonder if they are motivated by "mordida" sharing.
Only "Sometimes"?
You're way more idealistic than I. ;-)
"I wonder if they are motivated by "mordida" sharing."
Most people not only haven't heard of it and those that have very few understand it.
As an example, on an IFR flight into Mexico I was weather delayed and arrived at the destination airport 20 minutes after it closed at 7:00 PM. They knew I was coming but promotly shut off all the lights at 7.
When I landed and half way through the rollout all the lights came back on and all the officials were lined up on the taxiway, omandante, imigration, airport managerm, etc.
The comasndante took me into his office and demanded a $375 fine in cash and wouldn't give me a reciept, which I paid.
2 weeks later I had a meeting with the Secretary of Transortation in Mexico City and told her about it and her only coment was, o really!
When I got back to Loretto the next day the comandante was in jail.
Any mordita is supposed to be split half to his superior and that half to his superior until it reaches Mexico City.