Well he sent it registered and you can track it through both Royal Mail and USPS. It updates every location (i.e., leaving sorting facility, in transit, at ISC New York, etc) the same way FedEx and UPS does. I actually told him to send it FedEx just so it would get here faster, but he didn't, so I can't control that. He can't really resend because he sent his actual passport (which could be the reason it's being held up since the scanners may have detected the electronic chip and marked the package as suspicious). Of course he could say his passport was lost and get a new one if it came to that. The other stuff he sent, we already had to wait 2 months to get it to begin with. We've sent stuff back and forth registered mail for the past 2 1/2 years and never had this issue. It's just frustrating because of course this would happen right now!
After the 10 days I'm just going to open an investigation and state that I have immigration docements that are time-sensitive and I need this prioritized. I can drive up there and pick it up in person, but something tells me that isn't a practical option.