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 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

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

Chen Immigration is by far the most professional and meticulous group I have come across. The entire process, right from the evaluation by Victoria Chen, to the final submission to USCIS is systematic and diligently planned. Each and every question is answered and at no point does one feel helpless. The letters are expertly drafted. Kudos to the team and Ms. Chen.

- S. P., Scientist

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.

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 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

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

“Thank you so much for your hard work in getting my NIW approval.”

Approved in 30 days

State of Residence: California

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Success Stories: NAILG’s Meticulous Preparation Secured NIW Approval for a Japanese Graduate Student in Chemical Engineering

“Thank you for all the help during the case preparation. Attorneys were very thorough with material preparations and prompt with answering questions. I was satisfied with the drafted materials, and my case was approved.”

Approved in 66 days

State of Residence: Massachusetts

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Success Stories: Thanks to Our Assistant, a Chinese Postdoctoral Researcher in the Field of Biomedical Engineering Secures I-140 NIW Approval Without RFE

“It is a great experience working with Wegreened. They are highly responsive and provide clear, detailed instructions for each step of the process. Their flexibility in allowing me to work at my own pace was invaluable, especially when balancing other commitments during the preparation. I truly appreciate all their support and guidance!”

Approved in 294 days

State of Residence: New Jersey

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Success Stories: Thanks to Our Assistant, NIW Approval Made Possible for A Chinese Graduate Research Assistant in the Field of Artificial Intelligence Safety

“Excited to hear that! Thank you very much for helping me along the way! I had left a 5-star review on the review profile.”

Approved in 64 days

State of Residence: Indiana

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Success Stories: NIW Petition Granted for a Cloud Native Engineer from Iran Specializing in Computer Science with Our Assistance and Hard Work

“I’m really satisfied with all the services. Thank you so much for the good news and your great service. Thank you so much for everything.”

Approved in 469 days

State of Residence: Sweden

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Success Stories: We Fully Supported a Ph.D. Student in the Field of Construction Engineering from Iran to Successfully Secure NIW Approval, Thanks to Premium Processing

“For their professionalism, effectiveness, and comprehensive advice during my NIW application process, I am grateful of the North America Immigration Law Group. They took care of every detail, from reviewing my qualifications to crafting an effective petition. Thank you for helping me achieve this important goal!”

Approved in 47 days

State of Residence: North Dakota

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Success Stories: NIW Petition Approved for a Researcher from China in the Field of Electrical Engineering, Thanks to Our Team’s Efforts and the Premium Processing Service

“Thank you for your email and all your support throughout my EB2-NIW petition process. I truly appreciate your professionalism and expertise in handling my case.”

Approved in 46 days

State of Residence: Michigan

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Success Stories: Our Team Successfully Secured NIW Approval for An HCI Researcher in the Field of Artificial Intelligence from Iran

“I had a great experience with Katelyn. I wanted to thank Katelyn for her outstanding work and the entire team for their support throughout my case.”

Approved in 63 days

State of Residence: Georgia

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Success Stories: A Drug Development Director from China in the field of Membrane Biology achieves EB1A Case Approval with the Help of Our Hardwork and Assistance!

“My attorney is very helpful, quick-response and has done a great job during the preparation of my EB2 NIW and EB1A cases. I feel very lucky to choose WeGreened for my green card application and will recommend you to my friends once they need.”

Approved in 386 days

State of Residence: China

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Success Stories: A Chinese Senior Research Scientist II working in the Field of Organic Chemistry Received O1-A Approval with the help of NAILG’s teamwork

“Thank you for your great work! I highly appreciated it! Quite good and efficient.”

Approved in 66 days

State of Residence: New Jersey

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Success Stories: A Remarkable NIW Approval for a Principal Biomarker Statistician from China Secured in Just 1 Month, 23 Days Through Our Dedicated Efforts

“I am very satisfied with the whole process regarding quality and speed. Also, I feel the lawyer team sincerely tries to advocate for my case, which I appreciate.”

Approved in 53 days

State of Residence: California

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Success Stories: NAILG Facilitates NIW Success for an Iranian PhD Student in Computer Science

“Thank you for all your efforts. I greatly appreciate it.”

Approved in 67 days

State of Residence: Massachusetts

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Success Stories: We Assisted a CEO and R&D Manager Based Outside the U.S. Working in the Field of Chemical Engineering to Secure NIW Approval and Now Await EB-1A Approval

“I want to express my heartfelt gratitude for all your efforts regarding my case. Your dedication and patience during the case preparation played a significant role in helping me achieve I-140 approval.”

Approved in 284 days

State of Residence: Iran

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Success Stories: Our Team Secured NIW Approval for a Bioinformatics Analyst II in the Field of Biological Sciences from India

“Thank you so much for the great news! I truly appreciate all the efforts your team has made for my successful petition.”

Approved in 156 days

State of Residence: Maryland

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Success Stories: Helping a Chinese Ph.D. Student Secure NIW Approval in Materials Science Through Our Legal Expertise

“WeGreened staff helped me for the NIW application and filing process, with professional and step by step guidance.”

Approved in 466 days

State of Residence: California

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