North America Immigration Law Group (Chen Immigration Law Associates - WeGreened®) 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 58,000 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 https://www.wegreened.com/blog/

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 cumulative total of approved cases grew from 600 in 2013 to over 58,000 in 2025. See what our clients have to say about our service.

Approval Rate For EB1 / NIW Cases Filed By North America Immigration Law Group From 2020 To 2023

Client Testimonials

I decided to choose North America Immigration Law Group based on some positive feedback and experiences that some of my friends had with. Working with them was great. They are very supportive and professional and they are well familiar with the rules and process. Everything was delivered on-time exactly as they promised. My application was approved in less than 60 days
I highly recommend them to anyone who needs their service, specially for NIW category. I already have referred some of my friends to Chen Immigration Law Services and they are also very happy and satisfied with their service.

- M. M., Postdoc

I have to say the team at Chen Immigration Law Associates are very professional and responsive. My I-140 NIW EB-2 was approved recently and I truly appreciate all the patience and efforts that their team did for my case. As a result of this satisfactory experience, I am planning to continue working with Chen Immigration group for my I-485 case. Before applying for NIW, I searched many other lawyers and this firm was the best among them. Good luck everyone!

- A. S., Teaching/Research Assistant

It has been a pleasure working with the Wegreened Team. I always received prompt, courteous and professional responses from them throughout the EB1A filing process. They guided me in developing the material for the reference letters, drafted the letters in a timely manner and prepared a strong case which eventually lead to success. I am really grateful to them for all their help.

- V. J., Senior Engineer

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

I applied for EB-2 trough North America Immigration Law Group. I got the I-140 approval in one month ! I would like to greatly appreciate for their professional jobs. According to my interaction with them in filling out the I-140 application during several months, I found them very trustful and expert. Therefore it is my pleasure to highly recommend this firm to persons who like to apply for EB-2 green card or related ones. In addition, the application fee is cheaper that other immigration attorneys. Thanks a lot

- R. N., Independent Research Scientist

I had a great experience working with Chen Immigration Law Group. I applied for EB1A premium processing and the case was approved within 2 weeks without any RFE.
I was impressed with the quality of petition letter and the reference letters drafted by their team. Although my field is highly technical, the attorneys seemed highly knowledgeable and were able to present my research in a manner which was easy to understand, impressive and yet not 'over-selling'.
They went over my research/citations meticulously and were able to catch mistakes which honestly I would have missed if I was preparing my own case. They were also very prompt with replying to any questions I had during the process.
In short, I would strongly recommend them to all who want to get through the green card process without stress.

- P. J., Postdoctoral Researcher

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Success Stories: Our Customized EB1A Petition Aided a Chinese Staff Robotics and Controls Engineer in Mechanical Engineering to Secure EB1A Approval in Only 15 Days

“Wow, this is really great news. Thank you so much for the guidance and help throughout this process. I truly appreciate all your efforts.”

Approved in 15 days

State of Residence: California

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Success Stories: Heartfelt Appreciation – Cameroonian Postdoctoral Researcher Expresses Deep Gratitude for Our Meticulous Efforts in Securing NIW Approval Despite Waiting for a Longer Duration of Time

“This is Excellent news !! Thank you SO MUCH for making my day !! I sincerely appreciate your hard work, dedication, and guidance throughout my I-140 NIW petition process. Thank you for all the effort you put into ensuring a smooth and successful outcome. Your support has been invaluable. I will be sure to recommend your firm to others who may benefit from your exceptional service. Thank you again for everything !! I am thrilled that my EB2-NIW petition was approved in less than 10 months without an RFE ! I am incredibly grateful to Chen Immigration Law Group (Wegreened) for their expertise, professionalism, and unwavering support throughout the process. Their clear guidance, attention to detail, and responsiveness made a significant difference in my case. Thanks to their diligent work, my Form I-140 was approved smoothly, and I couldn’t be happier. I highly recommend Chen Immigration Law Group (Wegreened) to anyone seeking expert immigration legal services. Thanks again Chen, for your exceptional service!”

Approved in 297 days

State of Residence: Maryland

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Success Stories: Our Firm Helped a Subspecialty Physician from Europe Secure NIW Approval in Only 2 Months and 20 Days

“Chen and associates are very competent and fast. They respond via their portal to any question in <24h, and their portal is great to upload and organize all the documents. My experience made me understand that it is the background and the endeavor that counts.”

Approved in 80 days

State of Residence: -

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Success Stories: We Helped a Graduate Student Researcher from China in the Field of Pharmaceutical Chemistry Achieve NIW Approval Without Any RFE

“Thanks for sharing this great news with me! It’s been a great experience.”

Approved in 426 days

State of Residence: California

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Success Stories: NAILG Secures NIW Approval for a Chinese Senior Mechanical Engineer I in the Field of Mechanical Engineering Without Any RFE

“The overall experience is good! Thanks for the fantastic work!”

Approved in 84 days

State of Residence: Arizona

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Success Stories: NIW Petition Approved for a Formation Evaluation Reservoir Engineer in the Field of Petroleum Engineering, Thanks to Our Guidance and Premium Processing Service

“I am happy to share my experience with the Chen Immigration Team. I received my EB2-NIW I-140 approval through premium processing. The team is highly experienced and professional, providing prompt and thorough responses to all my questions. I highly recommend their services, and many of my friends and colleagues are currently working with them on their cases.”

Approved in 37 days

State of Residence: Texas

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Success Stories: An Indian Principal Research Engineer Working in the Field of Computer Science Received O1-A as well as EB1A Approvals with the Help of NAILG’s Teamwork

“That is very good news…Thank you for helping me through both the O1A and EB1A visas. I found the process well-organized with timely responses and thorough document checks. It made it easier to manage my time and any related mental stress.”

Approved in 20 days

State of Residence: Maryland

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Success Stories: A Remarkable NIW Approval for a Computer Vision Scientist from China, Secured in Just 2 Months Through Our Dedicated Efforts

“Thanks for all the efforts and I would definitely refer WeGreened to my friends.”

Approved in 60 days

State of Residence: California

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Success Stories: A Senior Machine Learning Scientist Achieves EB1A Case Approval with the Help of Our Team’s Efforts and Guidance

“The Chen Immigration Team was professional and responsive, providing clear guidance throughout the preparation of my case. The drafted materials effectively highlighted the significance of my background, ensuring a strong and well-presented application.”

Approved in 341 days

State of Residence: New York

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Success Stories: In Just 2 Months, a Software Engineer II from India Achieves NIW Approval with Our Customized Petition Packet

Approved in 60 days

State of Residence: Ohio

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Success Stories: A Research Scientist in Food Safety from China Secures NIW Approval in Just 19 Days with Our Dedicated Support and the Premium Processing Service

“Thank you so much for helping me with my NIW case. I’m super excited that it got approved smoothly.”

Approved in 19 days

State of Residence: Georgia

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Success Stories: A Ph.D. Candidate from California Secures NIW Approval in Just 2 Months and 4 Days with Our Expert Assistance, Also Thanks to Premium Processing

“Hi! Thank you so much for your help through this! I have been recommending you to my friends, and I know a bunch of them are currently preparing their case with you. Hopefully in a few years I will have enough citations and I can apply for EB1-A with you.”

Approved in 64 days

State of Residence: California

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Success Stories: NAILG Helped a Faculty Specialist from Nepal to Obtain NIW Approval in the Field of Data Science (with 14 Citations and a Master’s Degree)

“I want to thank the entire team for their exceptional support throughout my EB2 NIW application process. Your guidance on each section of the application was invaluable, and your thorough review of the information I shared helped me catch my errors and ensure accuracy. I truly appreciate how you accepted my feedback and incorporated only the relevant suggestions, demonstrating your expertise and professionalism. Your quick responses during critical periods were crucial and greatly appreciated. Additionally, your proper guidance considering my mixed backgrounds and academic and industrial experiences was instrumental in making this journey smoother and more manageable. Thank you for everything! I am looking forward to the next step of the green card process.”

Approved in 67 days

State of Residence: Washington

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Success Stories: A Remarkable NIW Approval for a Research Engineer II from India, Secured in Just 27 Days Through Our Dedicated Efforts

“I am very satisfied with the professionalism demonstrated throughout the entire process and the clear, straightforward answers to all my questions. I will definitely recommend my friends and colleagues to consider Chen Immigration Attorneys for their green card applications.”

Approved in 27 days

State of Residence: Georgia

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Success Stories: With Our Excellent Case Preparation, NAILG Wins NIW Approval for a Post-doctoral Research Associate in Aerospace Engineering

“Yes, that is awesome. Thank you so much for your help putting the case together. Overall I think that your service is of very high quality.”

Approved in 465 days

State of Residence: Arizona

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