Is it "old" process as far as "you can only select the US visa office"? I do not see anywhere in Spouse sponsoring application process selection of Visa Office by applicant?Note that you can only select the US visa office to process your application if you were legally admitted into the US for a minimum of one full year. If you were not admitted into the US for a minimum of one full year, then you will have to use your home country's visa office as your processing office - and if an interview is required it will be held there.
Can/how I contact you directly with a few questions?