“Once his application was approved by DHS, the National Visa Center would have sent the petition to the relevant U.S. Embassy or Consulate – Islamabad in Malik’s case.”
So the US Embassy in Islamabad did not even check her address. Sounds like a thorough vetting to me. /s
I gather addresses, as we know them here, can be rather problematic in other countries. GPS was a boon to those areas, making it easy to literally give your “address” as latitude/longitude. When visiting Seoul once, I seriously wondered how they managed to apply an address to where I stayed.
My foreign-born wife left her apartment about a week before emmigrating here, so for her final visa interview she didn’t actually have an address (had stayed in, and checked out of, a couple hotels) to give. As soon as she got the paperwork finalized she immediately headed to the border.