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

A real pleasure to work with Chen Immigration. I'm very satisfied with the process and, of course, with the result!
It was a persistent, systematic everyday job of their team for several months, tons of e-mails, all replied professionally. No need for a single phone call! No nerves, no hash, no mess, just persistent professional work that resulted in my approval.
Yes they ask for many supporting documents and evidence but the result is a very strong case approved without any RFE. That's extremely important to save time and nerves.

- A. B.

Many thanks to NAmILG/Chen Immigration for the quality and efficiency of their services. They have always replied very fast to any of my requests or questions. They have provided me with very clear answers and guidelines to navigate the I-140 application process. Their preparation of the file and their drafting of letters were thoroughly thought out and meticulous. I consider they have played a key role in the success of my I-140 application.
I would highly recommend Chen Immigration for their professionalism, honesty, and straightforwardness.

- P. A. M., Postdoctoral fellow

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

I had worked with Chen Immigration group for my O-1A visa first and then retained with them for my I-140 petition under EB1A category. Their services are rapid and prompt with an affordable fee structure. They also have very high success rate of approvals. They have taken utmost care on all the required documentation. They usually respond to my questions in 1 business day. I highly recommend Chen Immigration group for my fellow colleagues for their petitions under various categories.

- R. V., Chief Technology Officer

When i looked at all the reviews for the immigration firm, Chen immigration caught my attention for two reason, effective clear communication and their experience to approve otherwise difficult cases. After the initial free evaluation by their experienced attorneys they presented me with step by step instructions and options. I took a week to understand and signed the contract with them. My only concern at that time was not seeing the firm in person as everything is online, However that concern was gone as i saw their work ethics. They are super professional and respect the timelines and deadlines. they meticulously prepare all the documents, which is really important for such cases. I had a wonderful experience with them. I had already recommended two of my friends to hire them. I hired them for both I-140 and I-485. My I-140 was filed with PP and I received the approval in 8 days.

- L. S., Postdoctoral Fellow

The folks at Chen Immigration know what they are doing and did a fantastic job. They are extremely knowledgeable and helped me throughout the application process. Their letters were of top quality and would recommend them any day for any immigration related matters. Kudos to North America Immigration Law Group's team. Keep up the good work!!!

- A. S., Principal Consultant

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Success Stories: Without RFE, a PhD Candidate in the Field of Biomedical Engineering Secures I-140 NIW Approval with the Help of Our Expert Team

“I would like to thank you for preparing my application! The petition letters you drafted, along with the recommendation letters, are very helpful. My questions have always been answered promptly. Overall, the whole process was fast, smooth, and well-guided. Thank you so much!”

Approved in 360 days

State of Residence: Wisconsin

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Success Stories: In Just 1 Month, 22 days, an Indian Research Scientist in the Field of Public Health Secures NIW Case Approval with the Help of Our Expert Team

“Thank you for your notice. Your services have been exceptional.”

Approved in 52 days

State of Residence: New York

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Success Stories: NIW Petition Approved for a Food Technologist – Quality Assurance from Nepal in the Field of Microbial Food Safety, Thanks to Our Team’s Efforts and the Premium Processing Service

“Great Work! Completely met and exceeded my expectations. They were swift to respond and also made sure to verify all documents and information precisely. All issues were instantly resolved and any confusion or issues I had were immediately addressed. I would recommend it to everyone.”

Approved in 49 days

State of Residence: Tennessee

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Success Stories: NIW Petition Approved for a Researcher from Togo in the Field of Nutrition Without Any Request for Evidence [RFE], Thanks to Our Team’s Dedication and Guidance

“I appreciated the work you did, especially the promptness with which you responded. Thank you so much for your kind words and support throughout the process. I’m thrilled to have my I-140 NIW approved, and I truly appreciate your expertise and guidance.”

Approved in 290 days

State of Residence: Togo

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Success Stories: A Senior Research Engineer from China in the Field of Wireless Communications Achieves EB1A Case Approval in Just 19 days with the Help of Our Assistance and Premium Processing

“Thank you team! It has been a great pleasure to work together, and thank you so much. This cannot happen without your professional and great effort.”

Approved in 19 days

State of Residence: Texas

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Success Stories: A Researcher in the Field of Electrical Engineering Successfully Obtained His NIW Petition Approved

“I am writing to express my deepest gratitude for your outstanding support and guidance throughout my EB2 NIW petition process. Your expertise, dedication, and professionalism were crucial in ensuring a smooth filing and, ultimately, a successful approval. A special thanks to Attorney Lei Lei for invaluable assistance, patience, and meticulous attention to detail. Your insights and strategic approach made a significant difference in strengthening my case. I truly appreciate the effort and dedication you and your team put into every step of the process. I am incredibly grateful for your exceptional service and unwavering support. I will gladly recommend Chen Associates to anyone seeking immigration assistance. Thank you again for everything!”

Approved in 93 days

State of Residence: Alabama

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Success Stories: In Just 2 Months, a Chinese AI Engineer in the Field of Machine Learning Systems Secures NIW Case Approval with The Help of Our Expert Team

“That’s great news! Thanks for handling my case with care and efficiency.”

Approved in 60 days

State of Residence: California

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Success Stories: NAILG Helps Biomedical Scientist from Zimbabwe Achieve NIW Approval

“I am extremely grateful to the Chen Immigration for their professionalism and expertise when I filed my EB-2 NIW petition. They were very helpful and answered all the questions I had during the process. In addition, they compiled an excellent petition packet which resulted in my case being approved with no RFE. I definitely recommend the team!”

Approved in 297 days

State of Residence: Massachusetts

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Success Stories: NAILG Assists Geotechnical Engineer in Securing NIW Approval for Advancing Deep Foundation Systems and Infrastructure Safety

“I am extremely satisfied with the exceptional service provided by the North America Immigration Law Group. Their expertise and meticulous approach in preparing my EB-2 NIW petition made the entire process smooth and stress-free. They effectively highlighted my contributions, ensuring my case was presented in the strongest possible way. Thanks to their guidance and professionalism, my petition was approved efficiently. I highly recommend NAILG to anyone seeking a reliable and knowledgeable team for their NIW petition.”

Approved in 65 days

State of Residence: Kansas

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Success Stories: We Helped a Ph.D. Candidate from Thailand in the Field of Digital Economy Achieve NIW Approval in Just 1 Month, 25 Days with Our Intelligence and Guidance. Also, Thanks to the Premium Processing Service

“Thank you all so much for the preparation, hope I can get the good news from the USCIS.”

Approved in 55 days

State of Residence: Thailand

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Success Stories: NIW Petition Approved for a Ph.D. Candidate from Pakistan in the Field of Civil Engineering, Thanks to Our Team’s Dedication and Guidance

“Thank you for your excellent service. The entire process of composing the petition letter was quite enjoyable. Every detail ran smoothly. Each of the responses received from the Attorney was highly informative and well directed. Overall, I am extremely satisfied with your service. Thank you.”

Approved in 297 days

State of Residence: Texas

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Success Stories: Biostatistics Expert Secures EB-1A Approval with Our Law Firm’s Assistance

“Thanks for all the efforts!”

Approved in 37 days

State of Residence: Massachusetts

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Success Stories: Despite a Request for Evidence [RFE], Our Team Successfully Secured NIW Approval for a Full Professor in the Field of Chemistry

“I want to express my profound gratitude to you and the Firm for this wonderful news of the approval of my I-140 petition. Your passion, dedication, dexterity, and professionalism made this possible. Even when it looked gloomy, you reassured me that the final result would be good. The manner in which you handled the appeal gave me the confidence that you are doing the needful. I am really grateful and very proud of you. Surely I will be glad to recommend your firm to my friends who will be interested. I will not have a problem with you sharing the success story in the manner you have stated. Once again, a very big thank you.

Chen Attorney has shown a lot of professionalism in preparing my case. They painstakingly look at every detail with the goal of getting the best results. They are very timely in attending to the various stages involved in the case preparation. I must commend their efforts.”

Approved in 521 days

State of Residence: Nigeria

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Success Stories: NIW Petition Approved for a Senior Scientist from China in the Field of Pharmaceutical Sciences in 1 Month, 21 Days, Thanks to Our Team’s Dedication and the Premium Processing Service

“It has also been a great experience working with your firm.”

Approved in 51 days

State of Residence: New Jersey

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Success Stories: A Chinese Ph.D. Candidate Working in the Field of Computer Science Gets I-140 NIW Approval with Our Assistance

“The team is responsive and professional. I am very happy with the entire process!”

Approved in 50 days

State of Residence: New York

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