A request was made for a more detailed account of our interview at the US embassy in London. Here goes.
All immigration medicals are performed by Knightsbridge Doctors. We had our immigration medical done nearly two weeks before the interview to be on the safe side. The examination itself was uneventful. For more information, see
http://www.visamedicals.info/.
Our interview took place in the first week or so of January 2007 at 8:00 AM in the morning. We took the tube and arrived about 25 minutes early. We had to show our passports and appointment letter to the security detail outside the building and had to go through an airport-style security screening before we were allowed to enter. Once inside, we were given a ticket and told to wait for our number. Since we arrived first among the immigrant visa applicants (non-immigrant visa applicants are in a separate queue), it wasn't too long before we were called up.
A person behind the window took our paper work and was quite friendly. Judging from his accent, he appeared to be a British employee whose job it was to pre-process our applications. It looked as if they hadn't processed the packet they received from KCC until this moment. We were photographed and fingerprinted. Things seemed to go great.
The embassy was supposed to obtain a police certificate from a third country for me through the US consulate there. I had already obtained the UK police certificate myself; I couldn't for the third country because of procedures specific to that country. Due to some oversight this wasn't done and the process would take approximately 4-8 weeks. Needless to say, we were quite disappointed. However, we were told we could return to the US using our advance parole documents (for a pending employment-based AOS case at the USCIS).
We were then told to pay the fees and wait until called again. We waited about 45 minutes before we were called again. This time, the person behind the window appeared to be a US employee. He was quite friendly too. My wife and I had to take an oath affirming the information on the applications was correct and had to sign our respective forms. My son didn't have to take the oath since he's only 12. He confirmed that our applications would be delayed due to the outstanding police certificate. He then said he had to ask his supervisor something. When he came back, he said I had to go through administrative processing because my first and last names were very common and matches were found in their database. This could take anywhere from 6 weeks to 6 months or longer. Fortunately, he confirmed we could return to the US with our advance parole documents and wait there. He gave us a blue form indicating that our visa application was suspended under section 221(g) due to missing documents (the police certificate). There was no mention of administrative processing on the form though.
We were also told that we would have to return to the UK to get the visas put in our passports once notified, though we wouldn't have to appear at the embassy since the passports could be picked up by their courier service from any address in the UK mainland. He also told us to send them an e-mail now and again to keep the case alive.
I contacted them last week and was told they had received the police certificate but were still waiting for clearance from Washington.