I'm a US citizen running out of pages in my passport. The US embassy website says they prefer you to mail your passport in when getting a new one, but I don't feel comfortable with that so I'm going to make an appointment and go in person.
Couple questions. Will the Embassy take my current passport while I wait for my new one? And once I receive my new one, how do I get my current visa transferred from the old passport (which they will presumably keep and destroy) to the new one?
Any details you can supply for how the US embassy handles this would be appreciated.