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

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 am glad to know that my EB1 I-140 is approved. You made my dream come true. I am very thankful to North America Immigration Law Group. In addition to one's extraordinary credential, it is very important to have very good attorney for this success. Chen immigration attorneys are very brilliant and professional. They are very prompt in replying every query.
My several friends recommended Chen immigration and indeed they are great. I worked with Ms. Chen and Mr. Ingebritson. They have explained and simplified all process. Their wining strategy of selecting most useful credentials and presentation helped me in success of my case. I am completely satisfied with their service and highly recommending to everyone who is interested in employment-based green card application.
Thank you very much for all your help and advice during entire process of my application.

- P. N., Postdoctoral Fellow

I greatly appreciate Chen Immigration Law team for all the help and support, and for their very professional service, from the beginning to the end of my I-140 approval!<
My experience with them with filing my EB2-NIW petition steamily positive. They are professional, well-mannered, timely, and helped us steered through the complex petition process.
I talked with couple of others law firms but find out that Chen Immigration has refund policy, means that they do their homework according to your case before file the case. Which give me more confidence. At the end I figure out that the work very hard to prepare my case. I highly recommend to people if they want to apply for I-140.

- M. W. M, Enterprise Applications Administrator and Developer

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

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

I would like to thank Chen Associates for their great help to get the approval for my I-140 petition. I had very pleasant experince working with them and I am highly satisfied with their work.They are very professional and have many experiences on preparing the documents for the immigrant petition. They know about the strength of your case and I receive the I-140 approval notice (NIW) just after 3 months. I also retained them for the I-485 service. I highly recommend your firm to scientists and research scholars. This is one of the best choices in my life.

- N. F., PhD

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Success Stories: A Chinese Lecturer Working in the Field of Artificial Intelligence Gets I-140 NIW Approval with Our Assistance

“This is very good news. Thank you and your team for your hard work and effort.”

Approved in 60 days

State of Residence: Hong Kong

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Success Stories: We Helped a Researcher from China in the Field of Developmental Biology Achieve NIW Approval Without Any Request for Evidence [RFE], Thanks to Our Team’s Efforts

“Thank you very much along the way!”

Approved in 304 days

State of Residence: Utah

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Success Stories: NIW Approval Granted to a GIS Analyst in the Field of Geography with Our Assistance

“Excellent work. I loved working with Katelyn and the team.”

Approved in 49 days

State of Residence: Arkansas

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Success Stories: Our Team Successfully Obtained NIW Approval for a Chinese Data Scientist in the Field of Applied Machine Learning

“Thank you very much for your guidance and support throughout the case preparation.”

Approved in 247 days

State of Residence: Connecticut

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Success Stories: NIW Petition Approved for a Mid-level Software Engineer in the Field of Computer Science, Thanks to Our Guidance and Premium Processing Service

“Wegreened made my NIW approval smooth and stress-free. Highly recommend them for immigration success!”

Approved in 46 days

State of Residence: Washington

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Success Stories: An Italian Battery Materials Specialist Working in the Field of Waste Management Received O1A as well as NIW Approvals with the Help of NAILG’s Teamwork

“I am incredibly grateful to the team at NAILG for their exceptional work in securing both my O1A and NIW approvals. Their expertise, dedication, and strategic approach made the entire process seamless. From the very beginning, they demonstrated a deep understanding of my field and crafted a compelling petition that highlighted the significance of my work in battery recycling and waste management. Their professionalism, timely communication, and meticulous attention to detail ensured that every aspect of my case was presented in the strongest possible light. Thanks to their efforts, I was able to navigate this complex process with confidence and achieve a successful outcome. I highly recommend NAILG to anyone seeking immigration support, they truly go above and beyond for their clients.”

Approved in 470 days

State of Residence: Texas

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Success Stories: A Computer Vision Scientist Achieves NIW and EB1A Case Approvals with the Help of Our Assistance and The Premium Processing Service

“I want to express my sincere gratitude to everyone who contributed to the smooth processing of my EB-1 application. The experience was remarkably similar to the positive one I had when working with the team to file my EB-NIW application. I am truly impressed by the prompt responses to my inquiries, the meticulous revisions made to recommendation letters and petition letters, and the overall professionalism displayed throughout the process. All of these factors ensured that my application was handled efficiently and received a timely response within a day. I highly recommend this service to my friends and colleagues in the future.”

Approved in 33 days

State of Residence: Washington

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Success Stories: A Singaporean Senior R&D Scientist Working in the Field of Biomedical Sciences Received O1-A Approval with the Expert Advice of NAILG

“The entire team provided consistent and excellent service, care, expertise and work on behalf of our O1and O3 applications. Please keep up the great work as you have assisted us tremendously during this trying period of our lives. Many and much thanks for the excellent and superlative work!!!! Congrats to you too for another successful mission to be added to the long list of accomplishments by you and the North American Immigration Law Group. Best wishes.”

Approved in 16 days

State of Residence: Florida

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Success Stories: NAILG Helped a Process Engineer from China to Obtain NIW Approval in the Field of Materials Science Without Any RFE Issuance

“I would like to sincerely thank Chen’s Immigration attorneys who were helping me preparing NIW case for the past year. All the attorneys are extremely knowledgeable and responsible. From time to time, I was busy and could not follow the case preparation on time, but all the attorneys were patient. Also, the writing skills are amazing, and the case preparation steps are done well. The entire time, I communicated and responded. Thank you all so much!”

Approved in 468 days

State of Residence: California

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Success Stories: Our Dedicated Expert Team Supported an Epidemiologist from India to Achieve an EB-2 NIW Petition Approval in 68 Days

“Thank you for all your help and effort towards my case.”

Approved in 68 days

State of Residence: California

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Success Stories: We Helped a Ph.D Candidate from Vietnam in the Field of Power Electronics Achieve NIW Approval in Just Two Months with Our Intelligence and Guidance. Also, Thanks to the Premium Processing Service!

“Thank you so much for your support and guidance throughout my I-140 NIW petition process. Thank you again for everything!”

Approved in 60 days

State of Residence: Canada

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Success Stories: A Chinese Postdoctoral Researcher Working in the Field of Mechanical Engineering Gets I-140 NIW Approval with Our Assistance

“Thank you for your email and for all your support throughout my I-140 NIW petition process. I am thrilled to receive this approval, and I truly appreciate your guidance and professionalism in making this happen. It has been a pleasure working with you and your firm. Thank you again for your excellent support!”

Approved in 34 days

State of Residence: China

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Success Stories: We Assisted a Chinese Senior Autonomy Engineer in Transportation Engineering to achieve NIW Approval, With the Premium Processing Service

Approved in 58 days

State of Residence: California

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Success Stories: NIW Petition Approved for A Research Assistant in the Field of Computational Engineering, Thanks to Our Guidance and Premium Processing Service

“I appreciate your hard work along the way!”

Approved in 65 days

State of Residence: Indiana

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Success Stories: With Our Meticulous Efforts, a Hardware Engineer III from Egypt Working in the Field of Electrical and Electronics Engineering Achieved NIW Approval

“I had an outstanding experience with Chen Immigration Law Associates. They provided exceptional support for my EB2-NIW case, helping me build a strong and well-prepared petition, which was approved without any issues. Thanks to their clarity and guidance, the entire process was smooth and straightforward. I truly appreciate their dedication and professionalism and highly recommend them for immigration services.”

Approved in 124 days

State of Residence: Oklahoma

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