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'm so excited that my I-140 got approved within such a short time! I do think the North America Immigration Law Group did a great job. They are so patient to answer lots of my questions. The recommendation letters and petition letter are well prepared. That saved lots of my time! I will definitely recommend to my friends, as well as other people who prepare to apply for green card!

- X. L., Postdoctoral Fellow

I highly appreciate the support and professionalism of Chen Immigration Law firm. Although it took me a long time to gather all my documents but attorneys from WeGreened.com were never late in replying to any of my concerns. They were extremely meticulous in analyzing my documents and made sure all my supporting exhibits were appropriate. In only 30-days my EB2/NIW was approved and I'm sure it was due to their experience handling of my case. I'll certainly recommend others to consider hiring Chen Immigration Law Assoc. for any kind of immigration purposes. One of my friends is already in touch with them after hearing my success story. I sincerely appreciate their time and effort in preparing my case.

- A. R., Postdoctoral Scholar

The fact I like most about the Chen Immigration and Attorneys is their communication systems and responses. Throughout the whole application process until approval, I had lots of questions in different phases regarding case file preparation, EAD cards, travel with AP, service request etc. What I needed to do was to leave a message in the case management system and got detailed and satisfactory responses in a timely manner.
Their services ranging from the free evaluation at the first day to case preparation and drafting recommendation and petition letters have exhibited high professionalism and standard. I would suggest anyone to retain them for his/her I140 and I485 case preparation.

- S. A., Postdoctoral Researcher

The efforts put forth by Chen Immigration and Attorneys has been instrumental in obtaining the approvals for my O1-A and EB-1B (I-140) petitions. The approvals came in 4 and 8 days respectively after request for premium processing. However, this did not happen overnight and neither did I want them to happen overnight. Although my credentials were in place for both the petitions, most of the time was spent on preparing the materials and revising them over and over again. I was very busy in my job and barely had time to go over revisions in a continuous basis. However, the team kept at it, always responding to my questions and carefully going over every single piece of text and supporting evidence. Being trained as a scientist during my PhD, I would say, it was more like writing an academic paper with collaborators - everybody invested time and energy into the process and in the end the paper got accepted. This is a win for us all!
It took around 5 months to prepare the materials mostly because of my intermittent involvements but it was worth the wait. That being said, the logical constructs and inferences laid down by my team of lawyers to construct the reasoning as to why I may be suitable candidate in the area of O1-A and EB-1B criteria is outstanding - there simply was not much room to refute the arguments. Very well done! I will always keep you in mind.

- P. D., Senior Research Scientist

My EB1B I-140 got approved within 10 business days. I have worked with Chen Immigration Team from North America Immigration Law Group for 4 months before submitting my application. They were extremely thorough, meticulous and prompt with their service. They drafted all the necessary letters (employment verification, recommendation letters and petition letter) within the agreed timeline. They helped me to choose potential recommenders and were always quick to answer any of my questions. They are very professional and definitely know what they are doing. I will definitely recommend Chen Immigration Team to anyone who is planning to apply for Permanent Residency Status in USA.

- B., Scientist

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.

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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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