North America Immigration Law Group - specialized in NIW (National Interest Waiver) and EB1 Greencard

North America Immigration Law Group (Chen Immigration Law Associates – WeGreened^®) is a U.S. immigration law firm dedicated to representing individuals, research institutions, and corporations across all 50 states in employment-based immigration matters, with a focus on I-140 immigrant petitions. We specialize exclusively in talent-based immigration categories and have a long-standing record of success in:

EB-2 NIW (National Interest Waiver)
EB-1A (Individuals of Extraordinary Ability)
EB-1B (Outstanding Researchers/Professors)
O-1 (Individuals of Extraordinary Ability)

61,000 Approvals: Unmatched Insight into USCIS Trends
With more than 61,000 approvals in the EB-1A, EB-1B, EB-2 NIW, and O-1 categories, we offer unparalleled insight into how USCIS evaluates these petitions. As USCIS standards continue to evolve, our vast case database enables us to track adjudication patterns and adapt strategies accordingly. We provide our clients with real-time guidance informed by tens of thousands of successful cases.

Attorney-Led, Individually Tailored Petitions
Each petition is prepared under the direct supervision of our experienced immigration attorneys. We do not use generic templates. Every case is individually crafted to highlight your strongest qualifications and align with the latest adjudication trends.

Approval or Refund^® — Our Confidence, Your Security
Since 2011, we’ve proudly offered our Approval or Refund^® service for eligible cases. If your petition is not approved, we refund our attorney fee in full—an offer that reflects our confidence and commitment to your success.
Both Approval or Refund^® and Approve or Refund^™ are exclusively owned trademarks of North America Immigration Law Group. These marks represent our long-standing dedication to excellence in legal representation and client service.
Approval or Refund^® is a registered trademark with the United States Patent and Trademark Office (USPTO), Registration Serial No. 86150599.

We’ve Helped Thousands with Profiles Like Yours
No matter your background, field of expertise, visa status, or nationality, chances are we’ve successfully represented hundreds or even thousands of individuals in similar situations. Our team understands the nuances of technical, academic, and professional work, and we use that insight to craft compelling, case-specific strategies.

We are trusted by professionals from top universities, national laboratories, Fortune 500 companies, startups, and leading medical institutions.

Browse our Success Stories to see how we’ve helped clients across every discipline and career stage.

Built on Trust, Proven by Referrals
Most of our clients come to us through personal referrals—from friends, colleagues, or family members who have experienced our results firsthand. Our reputation for success has fueled our growth—from 600 approvals in 2013 to over 61,000 in 2025.

If you're looking for an experienced EB2 NIW attorney or I-140 petition expert with a proven record of success, you're in the right place.

Request a Free Evaluation today to see if you qualify—and let us help you secure your future in the United States.

Track Record of Success: EB-1 and NIW Approvals (2020–2024)

A Clear Path to

Your U.S. Green Card

Watch our experts walk you through the essential steps for first-time applicants.

Client Testimonials

I have to say the team at Chen Immigration Law Associates are very professional and responsive. My I-140 NIW EB-2 was approved recently and I truly appreciate all the patience and efforts that their team did for my case. As a result of this satisfactory experience, I am planning to continue working with Chen Immigration group for my I-485 case. Before applying for NIW, I searched many other lawyers and this firm was the best among them. Good luck everyone!

- A. S., Teaching/Research Assistant

I worked with this firm for my I-140 EB2-NIW application. They delivered everything as promised. Preparing documents for this application is a cumbersome work but WeGreened makes it really straightforward and simple. All I had to do was to write a research summary and contact my references for recommendation letters. Even for these steps they provided some samples and templates. Their messaging platform is great! Although I never talked to any of the attorneys on the phone, all my questions were responded within less than 24 hours on the messaging platform.

- B. M., RF Computational Engineer

It was a long and tough journey to prepare the EB-1A I-140. However, with the professional assistance and prompt feedback from the NAIL firm, this process has become much easier. They always stick to the deadlines that have been promised (preparing reference letter in 10 days, petition letter in 10 days). Thank you Chen associates for your enormous help, which helped me get my case approved one day after USCIS received my Form I-140. I will absolutely recommend you to every of my friends who will be applying for the green card in the future.

- J. L., Postdoctoral Fellow

It was an incredible experience working with Chen lawyers. I got my EB1A approved in 10 days. They were so perfect in their work and and took care of every little detail necessary. Very dependable and very friendly to work with. They were very prompt in answering every of my questions; and trust me they have been very kind to have responded to silliest of my doubts and concerns. I strongly recommend them to all my friends. Needless to mention, I am going to work with them for I-485 as well.

- T. K., Research Scientist

I am glad to know that my EB1 I-140 is approved. You made my dream come true. I am very thankful to North America Immigration Law Group. In addition to one's extraordinary credential, it is very important to have very good attorney for this success. Chen immigration attorneys are very brilliant and professional. They are very prompt in replying every query.
My several friends recommended Chen immigration and indeed they are great. I worked with Ms. Chen and Mr. Ingebritson. They have explained and simplified all process. Their wining strategy of selecting most useful credentials and presentation helped me in success of my case. I am completely satisfied with their service and highly recommending to everyone who is interested in employment-based green card application.
Thank you very much for all your help and advice during entire process of my application.

- P. N., Postdoctoral Fellow

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

Success Stories: NIW Petition Approved in Under a Month for Visiting Postdoctoral Fellow’s Vital Work in Drug Resistance Mechanisms

“I worked with Chen Immigration & Attorneys for my NIW-EB2 petition, and it was approved without any RFEs. Their team consistently responded to my questions promptly and provided detailed, informative answers. All documents were professionally drafted, and they made the entire process smooth and stress-free. I would gladly recommend Chen Immigration & Attorneys to anyone interested in applying for a green card.”

Approved in 26 days

State of Residence: Maryland

Success Stories: Mapping Biodiversity for a Healthier Planet: How One Ecologist’s Research Earned National Interest Recognition

“I am thrilled that my EB-2 NIW petition has been approved, allowing me to continue my critical research in biodiversity conservation in the United States. This achievement would not have been possible without the exceptional guidance and expertise of Chen Immigration Law Associates.

As an ecologist dedicated to preserving fragile ecosystems and endangered species, I needed a legal team that truly understood the significance of my work and could compellingly present its national importance. Chen Immigration Law Associates meticulously documented my contributions—from peer-reviewed publications to real-world conservation impact—crafting a petition that clearly demonstrated how my research benefits the U.S.

Their deep knowledge of NIW criteria, strategic approach to highlighting my field’s urgency (particularly in addressing habitat fragmentation and biodiversity loss), and attention to detail were invaluable. They transformed complex ecological concepts into persuasive legal arguments, while independent recommendation letters from global experts further reinforced my case.

I wholeheartedly recommend Chen Immigration Law Associates to researchers and professionals seeking NIW or EB-1 visas. Their ability to bridge scientific innovation with immigration law is unparalleled.”

Approved in 441 days

State of Residence: China

Success Story: NIW Approved Despite RFE! We Helped a Ghanaian Graduate Research Assistant Secure Success

“My overall experience with Chen’s Immigration Attorney has been good. The web portal is super helpful, and the assigned attorney answered my questions very well and on time. The assigned attorney worked closely with me throughout the entire process to make my application a success. I am immensely grateful to the Chen Immigration Team for the professional and exceptional work. Thank you!”

Approved in 368 days

State of Residence: Connecticut

Success Stories: Navigating RFE: NAILG Guided Expert Through NIW and EB-1A Approvals in Atmospheric Science

“Thank you for providing such professional and excellent service. I will not hesitate to recommend your services to my friends and colleagues. I will also contact your law office again when I need any law services in the future.”

Approved in 102 days

State of Residence: Washington

Success Stories: Teaching Robots to Feel: EB-2 NIW Approved for Researcher Advancing Emotion-Aware AI

“Wonderful professional service! Overall, I must admit that it has been an impressive professional service offered by Chen Immigration.”

Approved in 313 days

State of Residence: Germany

Success Story: NIW Approved Without RFE! Pakistani Associate Professor Achieves Success with Our Strategic Support

“Thank you so much for sharing such wonderful and exciting news with me. I’m absolutely thrilled and incredibly grateful! I truly appreciate the exceptional professional support you provided throughout every stage of my NIW immigration process. From the very beginning, your guidance, clear communication, and attention to detail gave me confidence and peace of mind. Your expertise helped simplify what could have been an overwhelming process, and your responsiveness and encouragement made a significant difference. I especially want to acknowledge your consistent dedication, timely updates, and thoughtful handling of every part of my case. Your role in this successful outcome has been invaluable, and I am sincerely thankful for your efforts.”

Approved in 482 days

State of Residence: Pakistan

Success Story: An Indian Assistant Professor Approved NIW Victory Smoothly with Premium Processing Advantage, Also Thanks to Our Expert Support

“Thank you very much. I had a great experience working with you, and you did an excellent job.”

Approved in 42 days

State of Residence: -

Success Stories: From NIW to EB-1A: NAILG Delivers Immigration Success for PhD Candidate in Computer Science

“Great service! My attorney is also helpful and responds to my questions quickly. Thank you!”

Approved in 458 days

State of Residence: New York

Success Story: Powering Forward — Dual Visa Success for a Research Engineer in the field of Mechanical Engineering

“I’m writing to express my deepest gratitude for your support throughout my entire immigration journey. Starting from my J-1 waiver, to the O-1A petition, and now the successful approval of my EB-1A, you have been with me every step of the way. Your professionalism, dedication, and patience have meant the world to me. I couldn’t have made it this far without your guidance and support. Thank you so much — truly and sincerely.”

Approved in 54 days

State of Residence: California

NIW Approved for a Systems Engineer Advancing AI-Driven Biomanufacturing and Sustainable Food Production Research Following RFE

“My attorney did an excellent job preparing my I-140 petition. Their attention to detail, responsiveness, and expertise made the entire process smooth and stress-free. I highly recommend their services.”

Approved in 203 days

State of Residence: -

Success Story: EB1A Approved Despite RFE! Dual NIW + EB1A Victory for Indian Medical Director via Premium Processing

“It has been a pleasure working with Chen on my EB1A NIW journey. I heard about Chen years ago and hence had the confidence to go with them. I liked their meticulous attitude in preparing the case draft and collecting evidence. Chen has a ton of experience with EB1 and NIW categories. Chen has also been prompt in responding to my queries. I was told the officer who had issued my RFE had only a 30% approval rate. I was nervous due to the recent significant drop in the EB1A approval rate. However, Chen was a great help throughout the process, and I am satisfied with her service. I wish them all the best and endorse her for physicians willing to file an EB1A NIW petition.”

Approved in 15 days

State of Residence: Illinois

Success Stories: An Iranian PhD Candidate’s Path to Success: EB2-NIW Petition Approved with No Request for Evidence

“I had a very positive experience working with the North America Immigration Law Group on my NIW petition. They were consistently responsive (i.e., every question I had was answered within 24 hours), and they followed through on every step they outlined from the beginning, which made me find them trustworthy. After I signed the agreement, they provided access to a well-organized client webpage that made it easy to keep track of tasks, documents, and deadlines. The whole process felt structured and manageable thanks to that system.”

Approved in 562 days

State of Residence: Illinois

Success Stories: NAILG Navigated NIW Petition for Artificial Intelligence and Machine Learning Researcher in Computer Science to Approval

“Thanks for quality service, advice, and efforts.”

Approved in 498 days

State of Residence: Michigan

Success Story: NIW Approved Despite RFE! Bangladeshi PhD Student Succeeds with Our Tailored Strategy

“I had a great experience working with the Chen Immigration team. They were always prompt in answering my questions. I especially want to thank Alexander Bennett for preparing a strong RFE response that led to the approval of my EB2 NIW petition. I highly recommend the Chen Immigration team.”

Approved in 555 days

State of Residence: Pennsylvania

Success Story: In Just 15 Days, A Turkish Hospitalist Achieves NIW Approval via Premium Processing, Also Thanks to Our Assistance

“I wish I had applied earlier, especially given the current priority dates. Many of my residency colleagues recommended Chen Immigration for their professionalism and strong track record of success. They provided thoughtful guidance and helped me present my past and current work in a way that allowed USCIS to clearly understand its significance. The team was kind, responsive, and open to feedback—always willing to incorporate my suggestions into the drafts. It was an important step in my career, and I felt a great sense of relief throughout the process thanks to their support. I’m truly grateful for their help.”

Approved in 15 days

State of Residence: New York

Next » « Prev

Latest Information

Success Stories

More EB1 Success Stories
More NIW Success Stories