This small note is to appreciate the great work done by the law firm of Chen Immigration helping to get my I-140 approval in the process of getting the Green Card in EB2 National Interest Waiver. They were professional in every step of the way and helped and guided me in getting all the documents in excellent shape. They did draft all reference letters and the first author contribution letter as well. Their staff is diligent in getting the documents to look professional even if the originals may not be in perfect English. I would highly recommend the law firm of Chen Immigration to qualified research professional to get their Green Card processed. Thank you so much WeGreened.com for all your help!