Attorney Khanna and his staff are very meticulous and posess the skills to handle anykind of roadblocks that come across during the process of immigration filing. I filed my permanent residency application under EB-1A category through them and got an approval. Diane was extremely helpful and diligent in answering questions and seeking appropriate information from me throught out the process. I was amazed how quickly she got acclimated to the research work i was doing and provided excellent guidance in obtaining required letters and other information. I am thankful to them for their efforts and highly recommend their services.