Interview was moved to a different district, although I didn't move out of district
Here is my short story. Me and my wife applied in March, 2016. We were scheduled for interview in SF district for August, 4. Few weeks before the interview we submitted address change request and later got our confirmation letters. The new physical address is the same city and the mailing address is the different district. Everything remain same for my wife but something wrong happened to my case. It was cancelled and in few days scheduled again for August 30 but in the _different district_ - the Santa Clara district where my mailing address is in.
Short: I found Mr. Rajiv Khanna to be a very competent and knowledgeable attorney, his firm has great processes, which I think increased the chances of success for my application. I recommended Mr. Rajiv Khanna and his firm highly. Detailed: I work in a law firm (not immigration law), and am very impressed with Mr. Rajiv's practice, the level of personal attention he provides, the efficiency with which my application was prepared, the promptness of his staff, transparency and fairness about costs involved, the amount of information on his website, and his forthcoming nature in understanding the case, explaining the options and providing recommendations.
Mine was an individual case - for L1 visa application, which was approved without a hitch. Unlike blanket L visa cases for big companies, every individual case has several small 'unique situations' that need due care while being described. I found that the law firm of Mr. Khanna is very well geared up to handle such cases. At the point my application was submitted, I was already confident that it was in good shape, and had captured all the information that needed to be there. Thanks to Mr. Khanna and his staff, I had all reasons to expect a successful outcome. I have used other immigration attorney's services, and not that I was unsuccessful with them or disliked them, but there is a difference in the way Mr. Rajiv Khanna's firm handles their matters, which, in my view, makes a big difference both to the quality of the applications, and very likely the outcome.