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

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.

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

We just wanted to thank Chen Immigration for their help during this process. They were absolutely amazing. They responded to all our questions with such detail and were thorough in their examination of all our supporting documentation. They were quick with their responses and always stuck to the timeline. They provided us amazing templates for all out letters of recommendation and overall were exceptional. Highly competent and would strongly recommend to anybody looking for immigration assistance.

- G. B.

I decided to choose North America Immigration Law Group based on some positive feedback and experiences that some of my friends had with. Working with them was great. They are very supportive and professional and they are well familiar with the rules and process. Everything was delivered on-time exactly as they promised. My application was approved in less than 60 days
I highly recommend them to anyone who needs their service, specially for NIW category. I already have referred some of my friends to Chen Immigration Law Services and they are also very happy and satisfied with their service.

- M. M., Postdoc

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

I applied for EB-2 trough North America Immigration Law Group. I got the I-140 approval in one month ! I would like to greatly appreciate for their professional jobs. According to my interaction with them in filling out the I-140 application during several months, I found them very trustful and expert. Therefore it is my pleasure to highly recommend this firm to persons who like to apply for EB-2 green card or related ones. In addition, the application fee is cheaper that other immigration attorneys. Thanks a lot

- R. N., Independent Research Scientist

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Success Story: Our Firm Expertly Handled RFE Leads to NIW Approval for An Associate Transportation Engineer from China

“Thank you so much for sharing this wonderful news! Excellent service! Will recommend to others for sure! I am 100% satisfied with the excellent help you’ve provided on my case. Once again, I truly appreciate your exceptional service from start to finish. I will happily recommend your name to anyone in need of assistance.”

Approved in 723 days

State of Residence: Texas

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Success Stories: NAILG Successfully Supports Research Scientist Specializing in Analytical Chemistry’s NIW Petition Without any RFE Issuance

“I had a very positive experience working with Chen Immigration (North America Immigration Law Group) for my I-140 NIW petition. I did not opt for premium processing, and my case was approved after 18.5 months, which was longer than the average processing time. When my case was delayed, the Chen team provided a professionally crafted inquiry message to USCIS, and my petition was approved about a month after the request was submitted. Their support during this phase was particularly reassuring. Another consistent strength of their service was their quick response time—I usually received detailed replies within 24 hours, which helped keep everything moving smoothly and reduced a lot of the stress associated with the petition. Overall, I found their service to be highly professional and responsive. I strongly recommend them to anyone pursuing an employment-based immigration petition, especially those facing longer-than-expected processing times.”

Approved in 552 days

State of Residence: Indiana

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Success Stories: Within A Month, NIW Petition Granted for a Postdoctoral Researcher in the Field of Artificial Intelligence Using the Premium Processing Service

“I am truly grateful to the North America Immigration Law Group for their outstanding support and professionalism throughout my NIW petition process. Their deep understanding of my field and ability to communicate its national importance played a key role in my case being approved in under a month with premium processing. I highly recommend their team to researchers seeking U.S. permanent residency through the NIW pathway.”

Approved in 27 days

State of Residence: California

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Success Stories: PhD Candidate in Analytical Chemistry Achieves NIW Approval with Assistance from NAILG

“Very responsive and detail-oriented. Loved the overall experience so far.”

Approved in 56 days

State of Residence: Colorado

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Success Stories: With NAILG’s Expertise, a Public Health Analyst Secures NIW Approval

“My attorney was always very helpful in their responses to my multiple questions and very quick to respond. It was really great having them put together my application. It was an absolute pleasure working with you, and I appreciate your support and guidance throughout the process.”

Approved in 486 days

State of Residence: South Africa

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Success Stories: EB-1A Success Story with Premium Processing of a Senior Research Software Engineer in Artificial Intelligence

“It was a good experience overall. The recommendation letter and other templates were valuable starting points. I also liked the well-considered responses. I never once felt why we are doing things a certain way, because the explanations always seemed reasonable. So far, it’s been a good experience.”

Approved in 13 days

State of Residence: New York

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Success Stories: NAILG Assisted an R&D Engineer in the Field of Civil Engineering in Securing NIW Approval

“Overall, I am very satisfied with the service. All communication was very timely and professional.”

Approved in 65 days

State of Residence: California

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Success Stories: Despite RFE, NAILG Secures NIW Approval for an Upcoming Research Scientist Specializing in Computer Science

“I have enjoyed working with my attorney, Blaine, and other attorneys who have helped respond to my messages and questions. They have always been super helpful and patient. I am fortunate to be able to work with them. I just received your message, and I want to sincerely thank you for all your help and support throughout my NIW application process. Your guidance, expertise, and patience made a huge difference, and I truly appreciate the effort you put into my case. It has been a pleasure working with you, and I’m grateful for everything you’ve done to make this a success. Thank you again!”

Approved in 198 days

State of Residence: China

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Success Stories: A Senior Scientist in Biomedical Sciences Successfully Received His EB-1A Petition Approval Using NAILG Service

“Thank you so much for your message and for the wonderful news regarding the approval of my I-140 EB1A petition. I am incredibly grateful for your outstanding support, expertise, and professionalism throughout this process. From the very beginning, your team demonstrated deep knowledge of the EB1A category, provided clear guidance, and delivered high-quality drafts and responses that gave me confidence at every step. Your strategic advice, attention to detail, and timely communication truly made all the difference.”

Approved in 186 days

State of Residence: Massachusetts

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Success Stories: Chinese Quantum Sensing Researcher Achieves NIW Approval in 2 Months with Our Expertise

“Ms. Belinda Bu drafted my PES and PL efficiently, and I am genuinely surprised and pleased to see the accurate description of my research and plans in those letters in their first drafts! I appreciate your team’s professionalism and attention to detail. Thank you very much!”

Approved in 62 days

State of Residence: Maryland

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Success Stories: In Just 15 Days, an Expert in Computer Science Secured EB-1A Petition Approval with Our Assistance and Premium Processing

“Excellent news! Thank you very much for all the work.”

Approved in 15 days

State of Residence: France

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Success Stories: Cancer Research Scientist Secures NIW Approval in Less Than Two Months with Premium Processing

“Thank you for your message. I am also pleased to work with you on this process.”

Approved in 54 days

State of Residence: Japan

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Success Stories: NAILG Achieves Swift EB-1A Approval for a Senior Lecturer in International Entrepreneurship (Premium Processing)

“I truly appreciate your outstanding service and support throughout this process. Your guidance and professionalism have been invaluable, and I am deeply grateful for your efforts.”

Approved in 13 days

State of Residence: United Kingdom

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Success Stories: Senior Applied Scientist in Electrical Engineering Earns EB-1A Approval in 18 Days Thanks to NAILG’s Strategic Support

“NAILG did a fantastic job on my EB1A application. They were thorough with my application and responded quite fast to my queries. They were very accommodating with any of the delays to get the reference letter signed. I found them very good at assessing profiles and then personalizing petitions to maximize approval chances. I am very grateful that they took my case and got it approved.”

Approved in 18 days

State of Residence: California

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Success Stories: Despite a Request for Evidence [RFE], an Assistant Professor in Autonomous Systems and Robotics Successfully Secured His EB-1A Petition Approval with NAILG’s Help

“Thanks for sharing the great news.”

Approved in 883 days

State of Residence: Alabama

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