score:5
I have the same issue every time with United.
I asked, they feel they have to verify your permission to come back to the US (as it is a round-trip ticket); so if you show them papers that allow you to come back, they will proceed with giving you a boarding pass.
This is airline specific, as others (for example, LH, Delta, AA) do not require this, and you can online check-in to Germany.
Also, on the return trip, United every time doesn't allow online check-in towards the US, same procedure. Again, LH does not require this and allows online-checkin.
There is no connection to your status with the airline, even as United Platinum member it doesn't work, whereas LH works with no membership at all. It's just how United decided to do things.
Upvote:3
I have never heard of an airline checking a passenger's immigration status in the US for a departing flight. They have no reason to check, and their staff are not trained to understand the nuances of immigration statuses and various situations when one might be in between statuses, which are very complex.
I believe sometimes airlines will not issue boarding passes for departing international flights until you go to the airport, because they need to verify the person's passport information to report to the two countries' governments.