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: EB2-NIW (National Interest Waiver), EB1-A (Alien of Extraordinary Ability), EB1-B (Outstanding Researcher/Professor) and O-1 (Alien of Extraordinary Ability).

Our Ten Thousand I-140 Approvals Provide Unprecedented Insight into the USCIS Adjudication Trend
With more than 16,000 EB-1A, EB-1B, EB-2 NIW and O-1 cases approved, we have first hand information on the manner in which the USCIS adjudicate I-140 cases. As the USCIS has constantly changed its adjudication standards for the EB-1A, EB-1B and EB-2 NIW categories, our firm's huge database of successful cases gives you unprecedented insight to USCIS adjudication trends. We carefully analyze the data for all of our cases and apply the results of our analyses toward giving our clients up-to-date advice and adapting our strategies such that we remain on par with the ever-shifting landscape of immigration law in the U.S. With us, you will always have access to important updates, strategies, and information so that you can make the most informed decisions about your case.

We Have Helped Hundreds and Thousands of Clients with Credentials and Backgrounds Similar to Yours
With our exceedingly large number of successful petitions, no matter what credentials you have, no matter your background and field of expertise, no matter your visa status or nationality, chances are we have helped hundreds or even thousands of clients just like you. Our clients are usually impressed with how well we understand their research and work. Our insight and understanding stems from the fact that we have handled many cases with elements similar to yours already, and this helps us devise the best strategies for each individual petition.

Please see our success stories at

Vast Majority of Clients Came to Us Because of Referrals
For years, our firm has attracted new clients based solely on word of mouth, recommendations, and the positive collaboration experiences shared with them by their friends and family. We take pride in our reputation and work hard to ensure that we provide a green card application experience that our clients are happy to share with their friends and colleagues. That is how our approved cases grew from 600 in 2013 to over 3,500 in 2019. See what our clients have to say about our service.

Approval Rate For EB1 / NIW / O1A Cases Filed By North America Immigration Law Group From 2015 To 2019

Client Testimonials

I'm very happy with all the work and advice Chen Immigration Team have put into my NIW application. The responses were always timely, the letters drafted were polite, well-structured and timely. When I got my RFE, I was worried, but with the help of the attorneys working with me, the answer to the RFE lead to approval.
Not only do the members of the team work extremely hard and with highest professionalism, they also show that they believe in their clients, are able to emphasize all the achievements better than I ever could, and they genuinely care.
Thank you so very much!
I cannot be happier with everything you've done for me!

- M, Postpoc

One word to define Chen immigration: 'Professional'

First of all, I want to thank the immigration team for their timely and excellent services. They were absolute joy to work with and the team was thorough, experienced and well placed to provide me excellent reviews, advice throughout my EB2-NIW application process. I have already recommended a few of my friends who already echo my sentiments and will continue to refer Chen Immigration services to anyone who seek my advice.

- D. T.

The best thing to happen to me in my GC process was my friend's recommendation of NAILG. They have been impeccable when it comes to keeping their promised time. They have also been giving me appropriate advice at appropriate times and have prepared a 1i140 packet that I could not have done myself in 100 years. I can't thank them enough.

- K. K., Research Scientist

It was fantastic to work with Chen Immigration Law Group. I got my I140 approval just in 4 months.Chen Immigration Law Group is a very professional company.They answered all my questions with timely manner and prepared my I140 package really good that I received my approval way before than I expected. I also really like their online service which makes everything easy to understand and to follow the instructions correctly and help you to handle such a complex paper work efficiently.

- A. C., Postdoc

I highly appreciate the outstanding work and help provided by North America Immigration Law group to me during my I-140 petition. They have very good understanding of the case and even easily understood my research and full profile to make the petition. There response before committed time is really appreciable. I found that the case taken by them is a big assurance that it is going to be approved. My EB1A- I-140 got approved very quickly even the day after the premium processing application was received without any RFE or difficulty.
I highly recommend Chen Immigration Team for green card petitions. Thanks a lot for their big help.

- S. S., Group Scientist

Three of my friends who already got green card in EB1 category with the help of Chen immigration recommended me to contact this firm. They gave me free evaluation and approve and refund policy for my EB1B. I don’t know about other firm but I can say that I had a very good experience with Chen immigration. My attorney guided me on every single step and never got irritated even if asked same question several times. I got the answer of all my questions within 24 hours of time. As they promised, they wrote very strong letter of recommendation and drafted my petition within timeline. I was impressed the way they presented my case in the petition and as a results my case got approved in 7 days. I would strongly recommend Chen immigration to anyone trying to get green card under EB1 category. As I heard from my friends and I also experienced that they are the best with impressive team of attorneys. Thank you so much Chen immigration. It would not have been possible without your help. You are doing really good job. Keep it up !
Highly Recommended !!!!

- Dr. S. R., Assistant Professor


Success Stories: Chinese Research and Development Manager in the Field of Pharmanutrition Gets NIW Approval with NAILG’s Help

Many thanks for your great support to make a strong NIW case. I feel very grateful.

Approved in 316 days

State of Residence: N/A

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Success Stories: A Research Associate from China Not Only Achieved EB1A Approval but also Obtained NIW Petition Approval 4 Months Apart with the Help of NAmILG

I-140 approvals feel like the light at the end of the tunnel during this most difficult time. Thank you. Thank you. Thank you.

Approved in 206 days

State of Residence: Massachusetts

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Success Stories: A Research Associate from China Not Only Achieved EB1A Approval but also Obtained NIW Petition Approval 4 Months Apart with the Help of NAmILG

I-140 approvals feel like the light at the end of the tunnel during this most difficult time. Thank you. Thank you. Thank you.

Approved in 348 days

State of Residence: Massachusetts

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Success Stories: I-140 NIW Approved for a Researcher from China in Tumor Immunology due to NAILG’s Arbitration


Approved in 348 days

State of Residence: N/A

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Success Stories: A Perception Controls Systems Lead Engineer in the Field of Control Systems Engineering from Canada Secures NIW Approval With Our Assiduous Efforts

I am super happy with the quality of the service I have got from your firm. It is absolutely top-notch. I will happily suggest you to any of my friends who plan to apply for green card. Thank you!!

Approved in 317 days

State of Residence: Canada

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Success Stories: NAILG Helped a Research Associate from China to Secure NIW approval Without any RFE

I have a very good experience working with your office, Thank you!

Approved in 297 days

State of Residence: North Carolina

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Success Stories: NAILG Helped an Associate Professor in Biomedical Engineering from Finland with Immense Publication and Citation Record Get NIW Approval

Great, incomparable value service, which is friendly and available all the time.

Approved in 299 days

State of Residence: Michigan

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Success Stories: A Research Scientist from Taiwan Secures EB1A approval in Just 11 Days with Our Dedicated Team’s Resolute Assistance

It's definitely a great choice to work with WeGreened for my EB1A filing. The WeGreened team understand the significance of my research thoroughly and nicely highlight it in the reference letters and my petition letter. Thank you very much!!

Approved in 11 days

State of Residence: Taiwan

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Success Stories: A Postdoctoral Researcher from South Korea Secured NIW + I-485 Approvals in the Field of Bioinorganic Chemistry, Despite a Long Wait

I like the petition letter and reference letters that you did. I was happy to work with you on my I-140 process. Thank you so much!!

Approved in 350 days

State of Residence: Maryland

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Success Stories: We Helped a Biomedical Software Engineer from India in the Field of Bioinformatics to Achieve EB-1A Approval in Just a Month

Great, thanks. awesome news!! Thanks for all your help!

Approved in 37 days

State of Residence: N/A

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Success Stories: A Senior Chinese Biostatistician I Gets NIW Approval with NAILG’s Assiduous Help

If you are looking for a reliable service for your immigration case, you could check out the WeGreened. I was planning for my NIW I-140 filling and I heard from multiple sources that I shall contact the WeGreened. I started a case evaluation with them and they are willing to take me at a good price! They walked me through all the case preparation process and we heard back from the USCIS with a straight approval! Thanks a lot!

Approved in 290 days

State of Residence: Washington

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Success Stories: Thanks to Premium Processing, a Chinese Senior Research Scientist in the Field of Signal Processing Gets EB-1A Approval in 6 Days Only

Thanks for your work on my case.

Approved in 6 days

State of Residence: Maryland

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Success Stories: A Postdoctoral Fellow in Molecular Biology Finds Support Through North America Immigration Law Group and Gets His NIW Approved

Thank you so much! This is great.

Approved in 323 days

State of Residence: Texas

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Success Stories: Our Assistance Made NIW Approval Possible for a System Performance Engineer from Ghana Working in the Field of Civil Engineering

Thank you for your good work. I appreciate your effort.

Approved in 327 days

State of Residence: Wyoming

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Success Stories: An Assistant Scientist Achieves EB-1A and NIW cases Approval less than 2 Months apart, Now Awaits I-485 Approval With Us

Thanks for letting me know about the NIW approval. It’s been a pleasure working with you. For someone with my profile, you guys helped me to get both NIW and EB1A approved. And I am working with you for I-485 for both me and my spouse. Meanwhile, I have already referred you to my friends and a few of them have already signed the contract with you and working. Thank you so much!

Approved in 366 days

State of Residence: Massachusetts

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