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:

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)

Client Testimonials

A real pleasure to work with Chen Immigration. I'm very satisfied with the process and, of course, with the result!
It was a persistent, systematic everyday job of their team for several months, tons of e-mails, all replied professionally. No need for a single phone call! No nerves, no hash, no mess, just persistent professional work that resulted in my approval.
Yes they ask for many supporting documents and evidence but the result is a very strong case approved without any RFE. That's extremely important to save time and nerves.

- A. B.

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

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

I highly appreciate the support and professionalism of Chen Immigration Law firm. Although it took me a long time to gather all my documents but attorneys from WeGreened.com were never late in replying to any of my concerns. They were extremely meticulous in analyzing my documents and made sure all my supporting exhibits were appropriate. In only 30-days my EB2/NIW was approved and I'm sure it was due to their experience handling of my case. I'll certainly recommend others to consider hiring Chen Immigration Law Assoc. for any kind of immigration purposes. One of my friends is already in touch with them after hearing my success story. I sincerely appreciate their time and effort in preparing my case.

- A. R., Postdoctoral Scholar

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

I had worked with Chen Immigration group for my O-1A visa first and then retained with them for my I-140 petition under EB1A category. Their services are rapid and prompt with an affordable fee structure. They also have very high success rate of approvals. They have taken utmost care on all the required documentation. They usually respond to my questions in 1 business day. I highly recommend Chen Immigration group for my fellow colleagues for their petitions under various categories.

- R. V., Chief Technology Officer

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Success Stories: NAILG Delivered Swift EB-1A Success for Genomics Postdoctoral Associate—No RFE, 18-Day Processing

“This is wonderful. I would like to sincerely thank the Attorney for their dedicated support in preparing and submitting the petition. I truly appreciate their efforts and professionalism, and I’m grateful for the successful approval.”

Approved in 10 days

State of Residence: New York

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Success Stories: NIW Approved in Under 2 Months for Senior Robotics Engineer with NAILG’s Expert Support

“I had an exceptional experience working with Chen immigration attorneys. Really high-quality work on reference and petition letters, with attention to detail.”

Approved in 41 days

State of Residence: -

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Success Story: NIW Approved via Premium Processing! A Chinese Research Assistant Achieve Success Thanks to Our Expert Team

“The whole preparation process is smooth and efficient. Instructions from attorneys are clear and detailed.”

Approved in 54 days

State of Residence: Illinois

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Success Stories: A Senior Engineer from China Obtained NIW Approval in Just 2 Months and 9 Days with Our Expertise, Retains Our Firm for His EB-1A Petition as well

“I’m thrilled about the successful application and truly appreciate the support throughout the process.”

Approved in 69 days

State of Residence: California

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Success Stories: NIW Approval in Record Time with the Premium Processing for a Chinese PhD Student in Medicine

“I sincerely appreciate all the support and guidance you have provided me so far. Your professionalism and expertise have been truly reassuring throughout this process.”

Approved in 58 days

State of Residence: China

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Success Story: Tailored NIW Strategy Delivers Approval for Bangladeshi Graduate Research Assistant

“Thank you so much for assisting me with this petition. Definitely it was a good experience working with the Chen Immigration, and I am highly satisfied with the overall process.”

Approved in 304 days

State of Residence: West Virginia

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Success Stories: Mapping the Mind to Mend It: A Neuroscience Researcher’s NIW Success

“Thanks so much for the update. This is great news !!!… I thank you once again for filing the petition with meticulous attention to each and everything. I had an amazing experience in filing my I-140 using your services. My questions and queries were promptly and thoroughly addressed. I sincerely thank my Attorney and the other members who did a fantastic job with this.”

Approved in 35 days

State of Residence: New York

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Success Story: Fast-Track NIW Success! Senior Research Technologist Approved in 25 Days Thanks to Our Expert Filing and Premium Processing

“Thank you so much!!!! I can’t believe how quickly this got approved. Can’t thank you enough.”

Approved in 25 days

State of Residence: Minnesota

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Success Stories: EB1A Petition Approved for an Indian Postdoctoral Research Associate in Biomedical Engineering After the Comprehensive RFE Response

“I worked with the Chen group for my I-140 petition. From the beginning, they were extremely professional, knowledgeable, and responsive. They guided me through every step with great attention to detail, and their support made a complex process feel manageable. Their professionalism, responsiveness, and clear communication made a complex journey feel smooth and manageable. I highly recommend their services.
 
Thanks to their efforts, my I-140 was approved. I highly recommend their services to anyone pursuing employment-based immigration.”

Approved in 539 days

State of Residence: New York

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Success Story: NIW Granted to Egyptian Assistant Professor in Only 23 Days via Premium Processing Service with Our Expert Team

“Thank you for your help and efforts. It has been a pleasure working with you.”

Approved in 23 days

State of Residence: West Virginia

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Success Story: NIW Success! A Chinese Ph.D. Student Approved with Our Expert Support and Premium Processing Service

“I really appreciate working with my Attorney. She is very professional and considerate. I really appreciate all your work through my NIW case.”

Approved in 62 days

State of Residence: Arizona

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Success Stories: Iranian Ph.D. Student in Artificial Intelligence Secures EB-2 NIW Approval in Michigan with Our Tailored Strategies

“I would like to appreciate you for your assistance and invaluable guidance as well as for handling my case sophisticatedly, which helped me get my EB2 NIW case approved. I am really appreciative of all your help and dedication, and will definitely put some reviews regarding this matter.”

Approved in 460 days

State of Residence: Michigan

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Success Stories: NIW Petition Approval for a Senior Research Engineer in the Field of Mechanical Engineering in Less Than 3 Months

“Thank you for sharing! This is great news! It’s been a great experience working with your team!”

Approved in 70 days

State of Residence: California

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Success Stories: Without any Request for Evidence [RFE], A Postdoctoral Researcher from China in the Field of Fluid Dynamics Achieves NIW Approval despite waiting for a Long Time. Thanks To Our Intelligence and Guidance.

“Thank you so much for sharing such wonderful news for me and my family! Your service is way beyond my expectations! Perfect! Thank you so much again!”

Approved in 465 days

State of Residence: Illinois

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Success Story: Our Expert Teams Helped An Iranian Postdoctoral and Lecturer Secure NIW Approval Without RFE

“I am truly grateful to the North America Immigration Law Group for their exceptional support throughout my NIW petition process. As a postdoctoral researcher and lecturer in renewable energy, I knew my case was complex, but their expert team guided me with clarity and confidence. Their strategic presentation of my research contributions, citation record, and peer review activities was instrumental in securing approval without any RFE. I deeply appreciate their dedication and professionalism, and I highly recommend their services to any researcher seeking immigration support.”

Approved in 470 days

State of Residence: Malaysia

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