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

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

My I-140 petition under NIW category got approved. I have a phd in mechanical engineering and was a postdoctoral fellow at the time of submitting my petition. I would like to thank Chen Immigration Team in drafting the petition and recommendation letters. I am impressed by their professionalism, their willingness to respond to any question in a timely manner and their dedication in emphasizing every aspect of my work and research. I would not be able to draft such an assuring petition letter myself. I am so grateful to have Chen Immigration Team as my attorney. I highly recommend Chen immigration law group. Thank you so much.

- V. V.

My EB1a petition got approved last week without any RFE. WeGreened worked with me very very closely at every step right from the beginning. I really appreciate the draft of recommendation letters you developed for me. Team Victoria is really great, and highly professional in services and timely responses. This is such an awesome experience working with you. Thank you !!

- S. S., System Analyst

I greatly appreciate Chen Immigration Law team for all the help and support, and for their very professional service, from the beginning to the end of my I-140 approval!<
My experience with them with filing my EB2-NIW petition steamily positive. They are professional, well-mannered, timely, and helped us steered through the complex petition process.
I talked with couple of others law firms but find out that Chen Immigration has refund policy, means that they do their homework according to your case before file the case. Which give me more confidence. At the end I figure out that the work very hard to prepare my case. I highly recommend to people if they want to apply for I-140.

- M. W. M, Enterprise Applications Administrator and Developer

The best thing to happen to me in my GC process was my friend's recommendation of NAILG. They have been impeccable when it comes to keeping their promised time. They have also been giving me appropriate advice at appropriate times and have prepared a 1i140 packet that I could not have done myself in 100 years. I can't thank them enough.

- K. K., Research Scientist

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Success Stories: In Just 5 Days, a Postdoctoral Scholar in the Field of Civil and Environmental Engineering Secured NIW Approval, Special Thanks to Funding Support from 5 Major Sources

Thank you and congratulations to you as well. I've seen firsthand the high standard of your professional work, and I'm eager to write a strong review for you on your platform!

Approved in 5 days

State of Residence: California

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Success Stories: A Visiting Scientist Achieves EB1A Case Approval With the Help of Our Assistance in Just 6 days

Sure, I am so glad to receive this news and surely would like to share this success. Thank you all!

Approved in 6 days

State of Residence: Maryland

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Success Stories: EB-1A Petition Approved for Indian Research Scientist in the Field of Physics in Just A Week

Thank you for sharing the wonderful news about the approval of our EB1A application! We are very happy and grateful for the professionalism you demonstrated throughout the case preparation. This approval would not have been possible without your expertise and dedication.

Approved in 7 days

State of Residence: Massachusetts

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Success Stories: NIW Approval Secured In 6 Days For Chinese Senior Analyst Working in the Field of Mathematical Modeling

Thank you for the notice! I can't believe it got approved so quickly!

Approved in 6 days

State of Residence: Texas

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Success Stories: Thanks to Our Team’s Efforts, an Egyptian Silicon Architect in the Field of Advanced Computing Gets NIW Approval in Only 3 Days

Thank you so much for everything. It has been my pleasure working with you. You are truly and genuinely very professional and very good at what you do. You made this process much easier for me. I have friends who are applying for NIW through the law firm Google works with but their process and progress is much slower and difficult than working with you. I left a 5-star review on both your firm's website and Google Maps.

Approved in 3 days

State of Residence: California

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Success Stories: In Only 6 Days, an Egyptian Technical Specialist Engineer in the Field of Mechanical Engineering Secures NIW Approval

Thank you! This is great news!

Approved in 6 days

State of Residence: Washington

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Success Stories: EB-1A Petition Approved for Indian Principal Scientist in the Field of Cancer Epidemiology in Only 6 Days

It has been my pleasure to work with y'all as well.

Approved in 6 days

State of Residence: Georgia

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Success Stories: In Only A Week, Mexican Postdoctoral Research Associate in the Field of Toxicology Secures NIW Approval

Approved in 7 days

State of Residence: Illinois

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Success Stories: In 6 Days, A Nigerian Ph.D. Candidate in the Field of Chemistry Secured NIW Approval

Thank you so much! This is such a great news!!!

Approved in 6 days

State of Residence: Nigeria

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Success Stories: In Just 2 Days, a Mexican Research Assistant in the Field of Neuroscience Secures NIW Approval

Approved in 2 days

State of Residence: Mexico

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Success Stories: EB-1B Petition Approved After Only A Week for Director of Emerging Technologies in the Field of Artificial Intelligence

I am so glad to see the approval. I can't thank you enough for all your support in this petition.

Approved in 7 days

State of Residence: India

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Success Stories: Scientist from Iran Working in the Biomedical Engineering Field Gets I-140 NIW Approval

Thank you for your efforts. I truly appreciate.

Approved in 114 days

State of Residence: Iran

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Success Stories: An Associate Scientist from India Achieves EB-1A Approval in the Field of Biotechnology, Thanks to Our Exceptional Support and PP Service

I truly appreciate the time and effort you invested in ensuring that every step of the process went smoothly. Your professionalism and clear communication gave me peace of mind, and I am incredibly grateful for your guidance. 

Approved in 22 days

State of Residence: California

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Success Stories: EB-1A Approval Secured For A Postdoctoral Fellow in Just 12 Days with the Help of Our Team and Premium Processing

Thank you so much for your support and assistance! I truly appreciate all the efforts you’ve put into my case.

Approved in 12 days

State of Residence: Georgia

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Success Stories: Engineer from China Secures I-140 NIW in just 47 Days With the Help of Premium Processing

Fantastic news! It has been a pleasure working with the WeGreened team as well!

Approved in 47 days

State of Residence: California

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