I am so sorry to hear that this is happening. Hopefully he will get the documents before his interview.
I remember when I used to send items to my husband in Nigeria and it would take months for them to get there, and I thank God that they would arrive although not when I wanted them to, and this was using the USPS. I would always do an investigation through USPS and normally the packages would arrive the following week after the investigation was done. I thought that was interesting.
When my husband had his interview in August, I again, sent the documents through USPS, for one reason, it was alot cheaper and two, he told me that I should, to save the money. We both knew what could happen, and we believed God for the best. I remember I sent it out on July 20, 2007 and I was told that it would take 8-10 business days. I had heard that before, anyway, this time, the documents arrived a week before his interview, August 13, 2007. We were both pleased about that.
If it helps, you may want to call and have an investigation done to find out where the package could be.
I will be praying for you.
LadyLove2006