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

Three of my friends who already got green card in EB1 category with the help of Chen immigration recommended me to contact this firm. They gave me free evaluation and approve and refund policy for my EB1B. I don’t know about other firm but I can say that I had a very good experience with Chen immigration. My attorney guided me on every single step and never got irritated even if asked same question several times. I got the answer of all my questions within 24 hours of time. As they promised, they wrote very strong letter of recommendation and drafted my petition within timeline. I was impressed the way they presented my case in the petition and as a results my case got approved in 7 days. I would strongly recommend Chen immigration to anyone trying to get green card under EB1 category. As I heard from my friends and I also experienced that they are the best with impressive team of attorneys. Thank you so much Chen immigration. It would not have been possible without your help. You are doing really good job. Keep it up !
Highly Recommended !!!!

- Dr. S. R., Assistant Professor

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

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

I will definitely recommend North America Immigration Law Group to all my friends who is seeking for immigration services. I am very, very impressed by their excellent service. The entire process is very professional and they have been responsive and responsible. They will do their best in every little detail to make you case stronger. Their service and attitude towards every case define their high reputation.

- B. H., Postdoctoral Research Fellow

It is with great pleasure that I here come to express my highest gratitude and respect for North America Immigration Law Group. Victoria Chen and her incredible competent and professional Team of Attorneys are highly recommended by me. They diligently worked on my application and provided me with the best word of advice and expertise regarding my I-140 case. My process was approved within the standard and current processing time of four months. I am now, undoubtedly working with them again to apply for the I-485. I would recommend one and only Law Immigration Group, and that is Chen Immigration & Attorneys. This Team is stupendous.

- L. O., Senior Applications Engineer

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

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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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