I was recommended Chen Immigration by both family, friends, as well as co-workers. I initially contacted them with my case information, and they answered every question we had regarding my current situation. I was very happy with their prompt response, and they always got back to me within 24-hours or by the next business day. They helped me draft my letters of recommendation, and were very open to my inputs and edits. I also got a chance to speak with one of their representatives over the phone for a more detailed discussion about my case when needed. My EB2-NIW petition was approved in 5.5 months without any RFE. I highly recommend their services to anyone looking to file their I-140 application.