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North America Immigration Law Group (Chen Immigration Law Associates) is a U.S. immigration law firm dedicated to representing corporations, research institutions, and individuals from all 50 U.S. states regarding I-140 immigration petitions. We specialize in employment-based immigration petition and have a proven record of high success rate for the categories of:

We keep close track of the latest immigration trends and regulations of USCIS (U.S. Citizenship and Immigration Services), decisions of AAO (Administrative Appeal Office) and judicial review opinions. The massive collected material contributes to the winning strategies for our clients' cases.

Approval of each case is the goal of our law firm. The key to our success is how we present supporting evidence and the high-quality petition letters based on systematic knowledge and comprehensive database developed by our firm. To provide the best immigration service, North America Immigration Law Group only hires attorneys with J.D. degrees from top law schools.

We have one hundred percent confidence in our capability to successfully represent our clients, and we are the only U.S. immigration law firm with refund policy on I-140 petitions. This is not an empty guarantee but specifically laid out in the attorney-client contract and is binding on our law firm.

We are pleased to announce that North America Immigration Law Group has so far received over 7,500 EB-1A, EB-1B and EB-2 NIW I-140 approval notices. In 2015 and 2016, the approval rate is 97.9% for cases using our Approval or Refund® (money back guarantee) service and 96.9% for all cases.

Our approval rate is 99.6% for NIW petitions using our "Approval or Refund®" (money back guarantee) service and the overall approval rate for all NIW cases is 99.2%.

In terms of EB1A petitions, the approval rate is 96% for cases entitled to our "Approval or Refund®" (money back guarantee) service and the overall approval rate for all EB1A cases is 94.3%.

As one of the leading U.S. immigration law firms providing the most comprehensive services focusing on EB-1/NIW petitions, we are proud to maintain our high approval rates with a large volume of approved cases.

* The number of EB1B approvals is under-estimated because we calculated our approval rates based on the approval notices we received. Some EB-1B petitioning employers did not submit a G-28 so only the employers received the approval notices.

** One denied case was not originally filed by our firm. We took the case after an RFE (Request for Evidence) was issued and the case was denied after the RFE response.

*** Among 125 EB-1A denials, 71 were processed in NSC (Nebraska Service Center) and 54 were processed in TSC (Texas Service Center). The majority of the EB-1A denials processed in NSC were issued by officers who requested thousands of citations for EB-1A approval.

In 2015-2016, our approval rate for O1A I-129 cases is 100%.

Note: These statistics are based on the final adjudication received in the specified year. Some of the cases were approved after appeal, motions, or re-filing.

Client Testimonial

  • It's a very pleasant experience to work with this attorney group. The application for NIW is a long process and my case also dealt with an RFE before the final approval. However, the Chen Immigration & Attorneys has been very helpful throughout the process. They are very knowledgeable of the application procedures and requirements, and they structured a very reasonable timeline for each step of the process. Based on material and evidence that I gathered according to their clear instruction, the attorneys are able to develop high-quality reference letter drafts and the important petition letter, which fits my particular situation. Especially after we received the RFE notice, the attorney was able to provide effective strategies and suggest additional evidence for me to gather. Then the attorney was able to dive into the material I provided, study them carefully, and draft very professional and effective responses, which is the critical factor for the success of my case. I appreciate the attorneys' professional services and highly recommend this group for anyone who needs similar immigration services.
  • Postdoctoral Research Fellow

    I would like to thank the entire team of Chen Immigration Law Associates for their excellent service and support. I had perfect experience working with them. I did my PhD out of US (Iran) and then came to US for my Postdoc and I considered it as a drawbacks. However, they gave me enough self confident to apply and answered all of my concerns and questions in the best way possible.
    The way they draft recommendation letters and petition is outstanding. I am glad that I chose them for my case. I would always recommend them to all my friends and colleagues. They are the best.
  • Postdoctoral Scholar - Electrical Engineering

    When I was hesitating to choose an immigration law firm for my EB1-A I-140 petition, my colleague who is working in the same project strongly recommended Chen Immigration Law Associates (North America Immigration Law Group). Only after I filed my case with Chen Associates, I could fully understand why he gave me so strong recommendation on Chen Associates.

    First, Chen Associates handled my case as if it’s theirs own. My I-140 petition was sent from Chen Associates to TSC right before Christmas. Due to the large volume of packages in the holiday season, an unexpected delivery exception occurred although the address was correct. Chen Associated had tracked the troubled postal mail to intercept it for quickly resolving the delivery problem during out of their working hours in Christmas holidays. I am so grateful to Chen Associates for such timely and kind support, with which my petition mail was found on the next day, and USCIS could receive it in the next week. My EB-1A I-140 case was filed with premium processing and was approved 10 days after USCIS received my petition.
    Second, Chen Associates had handled my case with tremendous patience. My case took a very long time compared to others. It took almost two years as I had many things happened in my work and family and I couldn’t focus on case preparation. I am so thankful to Chen Associates for their patience and continued support over this long time. I feel what Chen Associates have done for me indeed goes well beyond the typical responsibility range of immigration law firms.

    Third, Chen Associates has a very well organized system and clearly documented procedures. I-140 petition was much more complicated than what thought. The extremely detailed step-by-step guidelines and samples from Chen Associates corrected several of my misunderstanding and saved much of my time. Multiple teams and attorneys, who concurrently reviewed a different part of my petition file, did a superb job in a very short time and I could get most of the responses to my questions in 1 business day. The bottleneck in the schedule during my case preparation was always in my side.
    Lastly, the attorney Victoria Chen reviewed my application. Otherwise, since there are multiple teams in Chen Associates who are preparing and reviewing a different part of my petition, I think it will be quite challenging to maintain a high-level of consistency to achieve such a high case approval rates.

    Since my I-140 case was approved, I have been giving my strongest recommendation on Chen Associates to all my friends and colleagues who are preparing I-140 petition for US permanent residency application.
  • Postdoctoral Research Fellow

    Thank you very much for all help and support. I have received approval for EB1A premium processing in 11 days. Chen immigration associates and the team has worked very efficiently with my case. They are very prompt to answer my queries with in the same day. They present my petition letter in a format that the immigration officer will not get distracted. Please choose Chen immigration associates to file your green card. Thanks again!
  • I got my EB1A approval notice 10 days after USCIS received my case. The Chen Immigration law firm is a very professional team. They always reply to my messages within 24 hours. My major is in Chemical Engineering, I only have 7 publications and 140 citations, but the lawyer dig into my materials and found many highlights in it, which is very helpful for the application. The suggestions from the Chen Immigration law firm are great. Therefore, I highly recommend Chen Immigration for the EB1/NIW applications.
  • Research Scientist

    I received my NIW I-140 in about 9 months after application, which was the time that I was expecting. Everything from the beginning went smoothly, and the Chen Immigration attorneys always had solutions for any problem I was encountering during case preparation. For instance, some recommenders did not reply to my emails anymore although they had initially agreed to provide a recommendation letter, and we had to write letters for new recommenders. Chen Immigration was always very fast at providing new letters.

    The guidance throughout the application process was also very clear.

    I'm very happy with the decision that I made, and I totally recommend Chen Immigration to any researcher / PhD student who wants to get US permanent residence without a sponsor company/etc and totally by themselves!
  • Research Institute in Europe
    Senior Researcher

    I hereby would like to sincerely acknowledge and recommend Chen Immigration & Attorneys (North America Immigration Law Group) who handled my EB2-NIW case with great care and professionalism. If you are reading this, you are probably looking for an (employment-based) immigration path into US. In this scenario,
    I do highly recommend Chen Immigration Attorneys who have excellent credentials (cf. number of successful cases published on their website) in this field.
    After a thorough (but incredibly fast) evaluation of your situation they will recommend the most promising category for you - free of charge!

    A few facts about my case:
    - EB2-NIW (Approval or refund)
    - MSc (Electrical Engineering) and PhD (Physics) obtained in Europe! (Germany respectively Belgium)
    - Working as senior researcher in europe at time of case filing (never worked or studied in US before!)
    - No solid job offer from US when case was filed
    - ~40 co-authored journal/proceedings papers (9 first-author), 1 book chapter, ~450 citations
    - 4 recommendations letters and 3 testimonial letters (all well drafted by NAmILG) stating the importance of my recent work for the community
    - Case approved in 2.5months (Texas service center)

    Thanks again to all the attorneys and officers of NAmILG involved in this case. I am glad I made this journey with you.
  • PhD student

    I would like to thank Chen Immigration & Attorneys for all the great work you and your attorneys did for me to prepare and file my I-140 case.
    I really enjoyed working with them. They deliver what they promise in a timely manner. I got my I-140 approval after about 10 months. I highly recommend the firm to people who want to apply for their green card through EB1/MIW or EB2. However, I don't think they need referral or endorsementl from me or others, clearly they have build their good reputation that most of the people I know got their greencard have filed their cases with Chen Immigration firm. Thanks again!
  • Senior Research Assistant

    Thank you X 100 times. Chen immigration associates has worked very systematically with my case.I have received approval in 7 days.. They always make sure that they present case in appropriate way so officer will not get distracted. They have drafted all recommendations very efficiently. I really recommend them for any client who wants to file green card. Totally worth it. Thanks again for all your help. Have a nice time.
  • Postdoctoral Researcher

    I would like to thank the entire team of Chen Immigration Law Associates for their excellent service. I had wonderful experience working with them . Right from evaluating resume to submission of your petition they give their 100% for your case. For them every client is especial and they work diligently to prepare a strong case. The way they draft recommendation letters and petition is outstanding. I am glad that I chose them for my case. They are the best. I would always recommend them to all my friends and colleagues.
  • Postdoctoral research fellow

    I got my EB1A approved by USCIS TSC office. I'd like to thank the attorneys of Chen Immigration Law Associates for their wonderful service and professionalism in this process. They draft excellent letters and they have good strategies to optimize my case. They always answer my question in a prompt manner. I'm so impressed!
  • Schlumberger
    Research Scientist

    I recently got my NIW I-140 petition approved by USCIS TSC office in about 3 months. I have to thank the attorneys of North America Immigration Law Group (NAmILG) for their hard work and effort. They have made great efforts to promptly prepare all the recommendation letters and the petition letter, as well as patiently solve all my questions and concerns for me. Because of their wonderful jobs, I did not make too much significant changes to the letters they've prepared for me. The online message center system is also superb as the attorneys and I can exchange all the messages in a systematic and efficient way. They respond really fast (e.g., we can exchange several messages in less than one day)! The attorneys of NAmILG are so professional and knowledgeable that they are able to translate my academic contributions to simple languages that Immigration Officers can understand. I will definitely recommend NAmILG to my colleagues, fellow students and posterity.

    Thank you so much, the attorneys of NAmILG, for your fast, great, patient, and excellent help and support!
  • Aramco Services Company
    Petroleum Engineer

    I recently got my EB1-B, I-140 petition approved (in just 6 days!). I attribute this success to the Chen Immigration Group. I really had a wonderful experience working with the lawyers. After a very prompt evaluation, I was offered the Approval or Refund option and right from the beginning, I felt that I was in safe hands. The reference letters were excellent. I was overwhelmed by the punctuality and the scientific understanding exhibited by the lawyers. In just 10 days (yes, they have a timer! and they are very punctual), they assimilated my research work and reflected all the important aspects of my research work in the reference letters. I hardly made any significant changes to the drafted reference letters. Furthermore, the petition letter was also top-notch. The lawyers were very patient in responding to all my questions. The whole application process was handled very professionally using the provided online account, in which we upload all the documents, and ask queries. I would highly recommend Chen Immigration Law Group to my friends, relatives and my colleagues. Thank you very much, Chen Immigration Law Group, for all your help and support!!
  • Aramco Services Company
    Petroleum Engineer

    I recently got my EB1-B, I-140 petition approved (in just 6 days!). I attribute this success completely to the Chen Immigration Law Group. I really had a wonderful experience working with the lawyers. After a prompt evaluation, I was offered the Approval or Refund option and right from the beginning, I felt that I was in safe hands. The reference letters were excellent. I was overwhelmed by the punctuality and the scientific understanding exhibited by the lawyers. In just 10 days (yes, they have a timer! and they are very punctual), they assimilated my research work and reflected all the important aspects of my research work in the reference letters. I hardly made any significant changes to the drafted reference letters. Furthermore, the petition letter was also top-notch. The lawyers were very patient in responding to all my questions. The whole application process was handled very professionally using the provided online account, in which we upload all the documents, and ask queries. I would highly recommend Chen Immigration Law Group to my friends, relatives and my colleagues. Thank you very much, Chen Immigration Law Group.
  • Research Associate

    The service provided by Chen Immigration group throughout my EB-1A petition was excellent. They are extremely knowledgeable (both in legal and scientific areas), quick-to-response and punctual. The whole process was very smooth & hassle-free and I got approved in only 3 days after submission. I would definitely recommend them to anyone (especially for those in STEM field) and to myself in case I re-apply (JK).
  • Product Marketing

    I wish to take this opportunity to thank the Chen Immigration group for helping and guiding me through the EB1A I140 petition that successfully got approved. I was specially impressed by the reference letters and petition documents they drafted, as I was not expecting someone to understand and articulate my research work so well. The group is extremely knowledgeable about every aspect of the green card process, and any questions I had were answered promptly and to my satisfaction. Overall, I've had a great experience working with them and I highly recommend them to anyone who is looking to file their green card.
  • National Lab
    Postdoc

    Thank you so much Chen Immigration lawyers for helping me with my green card process. The lawyers have been thoroughly professional in guiding me through the process and promptly answering my questions. I was initially a bit anxious as I was only a 4th year PhD student in Chemical Engineering (top 25 ranking university) with ~40 citations. But Chen Immigration lawyers have done a phenomenal job in helping get my green card. The overall process was about 2.5 years from the time I contacted until I got the green card in my hand. The way they drafted the whole application package was very impressive and how they presented my case to USCIS. I strongly recommend Chen Immigration lawyers to others for their green card application.
  • Postdoc

    I am a postdoc in the field of Civil Engineering. My I-140 NIW petition was approved within 80 days.
    Working with Chen law group was a great experience. I am fully satisfied with the great work that they do. Everything was handled professionally and based on the timeline. I strongly recommend the Chen law group to students and postdocs who want to apply for greencard through NIW.
  • Postdoc

    Thank you so much for the great news of my I-140 NIW petition approval. Working with you throughout the entire process of my application was very exciting and interactive, and your prompt and effective response for any question/concern I raised was so amazing and encouraging. Your team in North America Immigration Law Group is highly professional in immigration law. Your exceptional ability to easily understand my specialized research works and prepare meticulous petition and recommendation letters was so impressive; I proudly recommend your firm to friends and colleagues.
  • Geospatial Analyst

    My EB1A got approved after I received RFE. I am so grateful to Chen and her team for their dedication and handling my case in successful manner. Every step of the process was handled with great care and in an professional manner.They had lots of patience in answering all my questions and concerns. I highly recommend their team for immigration legal services.

Success Stories: NIW and EB1A Petitions Approved for Research Scientist with 162 Citations in the Field of Chemical Engineering

Hi, I just got message that my EB1A I140 was approved. thank you so much for your help.

Approved in 13 days

State of Residence: Massachusetts

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Success Stories: NIW Petition Approved for Postdoctoral Research Scientist from Turkey in the Field of Atmospheric Physics

Thank you very much for your service.

Approved in 322 days

State of Residence: Maryland

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Success Stories: EB-1A Petition Approved in Under 2 Weeks for Principal Algorithm Researcher in Pennsylvania in the Field of Electrical Engineering

That is great news! Thank you so much for all your help in this process!! By working with your law firm, the whole process became very streamlined and easier to go through. The samples, FAQs and other materials in your client package were extremely helpful while I was assembling my package.

Approved in 13 days

State of Residence: Pennsylvania

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Success Stories: Our Efficient Legal Team Helped a California-based Postdoctoral Scholar in the Field of Biochemistry Obtain EB-1A Petition Approval despite a NOID

Thank you.

Approved in 40 days

State of Residence: California

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Success Stories: NIW Petition Approved for Postdoctoral Research Scientist in New York in the Field of Population Genetics

I would like to highly recommend Wegreened/Chen Immigration Group. They were very professional, and replied to my many emails promptly and really helped me a lot in getting the approval. I am extremely grateful to them for all of their help. I am very happy I chose them because comparing my experience to the experience of some of my friends with other lawyers, i am certain that Wegreened/Chen Immigration Group is the best.

Approved in 344 days

State of Residence: New York

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Success Stories: NIW Petition Approved for Ph.D. Candidate from Bangladesh in the Field of Computer Science

I really appreciate your help in this process and will refer your firm to my friends and colleagues.

Approved in 316 days

State of Residence: Wisconsin

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Success Stories: Research Staff in the Field of Civil Engineering Obtains EB-1A Petition Approval Just 10 Days after Filing with Premium Processing (131 Citations)

I am writing to express my gratitude for your help! Your professional and efficient work is the key to the success of my EB1A application. I will definitely recommend your service to my friends and colleagues with enthusiasm!

Approved in 10 days

State of Residence: Massachusetts

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Success Stories: EB-1A Petition Finally Approved Followed By Green Card for Indian Research Associate with 110 Citations in the Field of Biochemistry

Thanks a lot for your guidance for getting I-140 approval.

Approved in 444 days

State of Residence: Louisiana

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Success Stories: NIW Petition Approved in 10.5 Months for Postdoctoral Research Associate from Iran in the Field of Mechanical Engineering

We would like to thank you for all your help throughout the application process and your thorough reviewing of our documents and preparation of a perfect petition.

Approved in 321 days

State of Residence: Illinois

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Success Stories: Indian Senior Research Associate in the Field of Computer Engineering with Approved EB-1A Petition Subsequently Obtains a Green Card

I would like to thank you and the entire team for their effort and constant professional support in this journey for the last one and half years...I always recommend your team to all my friends and colleagues who would like to apply for the green card.

Approved in 332 days

State of Residence: Ohio

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Success Stories: Associate Professor & Chief Physician in the Field of Regenerative Medicine Plans to Undergo IVP in China after Receiving EB-1A Petition Approval (PP Requested)

Thank you.

Approved in 11 days

State of Residence: Outside the US

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Success Stories: NIW Petition Approved for Process Engineer in the Field of Chemical Engineering (Based on Matter of Dhanasar)

Thank you for all the good work. I am very pleased working with Chen's Team. They are very professional team. Once they said YES to your profile, you are good to go.

Approved in 90 days

State of Residence: NA

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Success Stories: EB-1A Petition Rapidly Approved in 9 Days for Postdoctoral Research Fellow in Massachusetts in the Field of Pharmaceutical Sciences (116 Citations)

Thank you.

Approved in 9 days

State of Residence: Massachusetts

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Success Stories: NIW Petition Approved for Molecular Biology Expert in Wisconsin

I really appreciate the help with North America Immigration Law Group for my EB2-NIW filing. They are very professional and respond promptly to my questions. The drafts for letters are very helpful and time-saving, and their suggestions and feedback are reasonable and professional. In addition, I like the website which is very convenient for communication and file exchange. The service fee is reasonable too. I would recommend their service to my friends and family who needs immigration service.

Approved in 350 days

State of Residence: Wisconsin

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Success Stories: Materials Science Researcher Based Outside the US Obtained EB-1A Approval and Is Now Ready for Immigrant Visa Processing

Thank you for your message.

Approved in 8 days

State of Residence: Outside the US

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