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

Thank You Chen Immigration and Attorneys for your tremendous effort on helping me approve my NIW EB-2 petition. They are very professional from start to end. All the questions asked were answered in a professional manner in timely basis. I really appreciate all your work and suggestion during the process. If anyone of you plan to file your NIWS, Chen Immigration and Attorneys are probably the best options out there.

- M. K., Geophysicist

It was a privilege to work with Chen immigration attorneys during my NIW I-140 application. They were really professional and kept the deadlines depicted by the client-attorney agreement. They will answer your questions within a day with the maximum clarity. I would definitely recommend them to anyone looking to apply for a NIW green card. Thanks once again and keep up the good work.

- I. S., Research Scientist

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

Thank you to the North American Immigration Law Group/Chen Immigration and Attorneys for their unwavering support and help in helping my secure my I-140 approval under EB1A and also under NIW. Their service was professional and timely. They answered my million and one questions with patience and worked with me on every stage of the process. They helped draft the letters and were open to edits and comments from me. What I also liked was that they were open to receiving suggestions from me to help strengthen my case especially when we were responding to our RFE.
Thank you to this team for working diligently and patiently with me to help build my case and get the EB1A petition approved.
I highly recommend them.

- S. V., Assistant Professor

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

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

READ MORE

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

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

Read more

Next » « Prev