Bumping this thread because I just flew out of Oaxaca to DFW yesterday, and all departing passengers had to go to the immigration kiosk to return our formas migratorias, and they stamped our passports!

I was, to put it mildly, stunned. I've gone to Mexico close to 20 times over the past 12 years (albeit it always flown in/out of MEX), and this was my first time getting an exit stamp or going through any sort of immigration control upon exit. I had assumed that as usual airline gate staff would collect the forms before boarding, but there was some type of security agent standing by the entrance to the pre-gate security area telling everyone to go to the immigration desk.

The guy there scanned my passport, stamped my boarding pass, stamped my passport, and then I was allowed to enter the line for the metal detectors and head to the gate.

Even more weirdly, no one actually stamped my passport when I arrived in the country (also at OAX) the other week - just my forma migratoria.

Is this a new policy, or is OAX just doing its own thing?