So various airlines -- most recently AA -- keep demanding the address where I'll be staying in the US. I'm an LPR, and like US citizens, permanent residents are supposed to be exempt from this requirement. And this happens even though my LPR status is on file (as required for travel to the US.)

Perhaps I'm making a mountain out of a mole hill -- after all, USCIS has my address and far more on file, which I'm sure is accessible to every federal agency. And airlines all have my address from the credit card billing address. But do airlines deliberately impose this requirement where the law does not require it? There doesn't seem to be a way to not input this data, as forms will complain about being incomplete. And I've had check-in clerks from several airlines run into the same problem with their terminals if I attempt to check in at the airport.