Srilm wrote:
There is an immigration control officer at the airport. He checks your passport and boarding pass just prior to the security checkpoint. The sign at this station says "airport police" but as he is checking your passport and boarding pass, that would fulfill the role of an immigration check. As there is a special line here for minors, we can be reasonably sure they're making sure that people have the correct documentation to exit the country. There is also an officer just before the airline check-in that checks to make sure that you have paid and correctly filled out your departure tax form. That could be considered an immigration control as well. The security (x-ray) check really has nothing to do with immigration, although "TSA" is a USA construct -- not sure what CR calls their security. There is no exit stamp in the passport.
The security checkpoint checks your boarding pass and passport to ensure you are a ticketed passenger for security reasons, not immigration. They don't look at your stamps, they don't even check a list. It's just to make sure you are a ticketed passenger. Unless of course these officers have the entire immigration database stored in their heads...
Further, there is no "officer" that checks that your departure tax has been paid, that is an airline employee and they're just trying to avoid you getting in line without having paid it, and that it's filled out to keep things moving.
The minor line does indeed check to verify that the minor is with a parent or authorized guardian and has papers, however that would be a stretch to call it "immigration" because all it's doing is making sure you aren't kidnapping the Ch*ld. It's a legal issue, not an immigration one.