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:

Choosing the Right Immigration Law Firm Matters More Than Ever
In today’s immigration landscape, approval outcomes for NIW, EB-1, and O-1 petitions are increasingly shaped by shifting adjudication standards, heightened scrutiny, and evolving policy interpretations. Under these conditions, the law firm you work with is not simply a service provider. Rather, it becomes a critical strategic partner in assessing risk, framing evidence, and positioning your case effectively.

Many immigration law firms continue to rely on rigid internal policies, standardized support-letter requirements, or fixed drafting templates. While such approaches may simplify internal workflows, they often fail to account for how USCIS officers actually evaluate cases in practice, particularly in borderline, interdisciplinary, or non-traditional profiles.

At North America Immigration Law Group (Chen Immigration Law Associates), we take a fundamentally different, data-driven approach. Our strategy is informed by analysis of nearly 64,000 approved cases across NIW, EB-1, and O-1 categories, allowing us to identify adjudication patterns, evidentiary gaps, and effective framing strategies as standards evolve.

Rather than fitting cases into pre-set templates, we apply a customized drafting methodology that integrates historical approval data, current adjudication trends, and each client’s unique professional trajectory. This approach enables us to craft petitions that are not only well-written, but strategically aligned with how USCIS evaluates national interest, extraordinary ability, and sustained impact today.

64,000 Approvals: Data-Informed Insight into USCIS Adjudication Trends
With nearly 64,000 approved cases across the EB-1A, EB-1B, EB-2 NIW, and O-1 categories, our work provides a unique, data-informed perspective on how USCIS evaluates employment-based immigration petitions in practice.

As adjudication standards continue to evolve, historical approval outcomes offer critical insight into how evidentiary thresholds, framing expectations, and discretionary analysis shift over time. By systematically analyzing patterns across thousands of successful cases, we are able to identify emerging trends and anticipate areas of heightened scrutiny.

At North America Immigration Law Group (Chen Immigration Law Associates), this depth of case data informs not only how petitions are drafted, but how strategies are adjusted in real time. This ensures that each case is positioned in alignment with current USCIS adjudication rather than static assumptions.

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.

The "Anti-Template" Philosophy

We Draft for Today's USCIS, Not Yesterday's
U.S. immigration adjudication is inherently dynamic. Standards, evidentiary expectations, and areas of scrutiny evolve continuously, and arguments that were persuasive months ago may no longer be sufficient under current review practices. Because we file a high volume of employment-based petitions each year, we are able to identify shifts in USCIS adjudication at an early stage. These shifts may include increased scrutiny of specific fields, changes in how national importance is interpreted, or higher expectations for evidentiary specificity.

At North America Immigration Law Group (Chen Immigration Law Associates), our drafting process begins with an assessment of how cases are being adjudicated today, not how they were approved in the past. Rather than relying on static language or pre-set formats, each petition letter is developed through case-specific legal analysis to ensure that the client’s background is framed in alignment with current adjudication trends.


Why Customization Matters for "National Importance"
One of the most common grounds for NIW denial is a failure to clearly establish national importance. Broad or generalized assertions of importance, without precise linkage to U.S. priorities, are increasingly insufficient. Therefore, effective petitions must go beyond generic descriptions. Each case is framed to connect the client’s specific research, technical expertise, or business activities to concrete national needs, such as artificial intelligence leadership, public health advancement, or supply chain resilience.

Drawing on insights from recent approvals, we construct arguments that reflect how USCIS officers are currently evaluating national impact. These arguments rely on specific and technical examples rather than abstract or conclusory statements.


Tailored Argument Construction
Each case is evaluated as an integrated legal record, not simply as a collection of credentials. A dedicated attorney reviews the client’s publication record, funding history, professional trajectory, and real-world impact to develop a cohesive legal narrative tailored to the case. This from-scratch analytical approach allows us, in appropriate cases, to rely on the strength of the legal argument itself. By grounding the petition in detailed analysis and current adjudication standards, the case is positioned to stand on its own legal merits.

Proven Results in a Heightened Adjudication Climate
In the current immigration adjudication climate, where USCIS scrutiny has increased across employment-based categories, measurable outcomes matter. While many firms reference "high success rates" in general terms, few provide verifiable, case-volume–backed data that allows prospective clients to understand performance in context. At North America Immigration Law Group (Chen Immigration Law Associates), we take a transparent, data-driven approach to evaluating outcomes. Under our Approval or Refund® service, between January 2020 and December 2024, the firm achieved an overall success rate of 98.44% across 34,061 cases.

This performance spans multiple employment-based immigrant visa categories:

  • EB-2 NIW: 99.52% approval rate, based on 28,946 approvals
  • EB-1A: 91.76% approval rate, based on 4,322 approvals
  • EB-1B: 98.51% approval rate, based on 793 approvals
These results are particularly notable given the increasingly rigorous review standards applied by USCIS during this period, especially for industry-based NIW petitions where national importance and independent impact are closely examined.

Rather than relying on generalized claims, we publish detailed, verifiable approval data to provide clients with a clear understanding of what has been achieved in practice. This commitment to transparency reflects how we approach case strategy more broadly: with evidence, accountability, and a focus on outcomes that withstand heightened adjudication scrutiny.

Track Record of Success EB-1 and NIW Approvals

(2020.01 - 2024.12)
Category Approval or Refund® Approval or RefilingTM
Approved Sum Success Rate Approved Sum Success Rate
NIW 28,946 99.52% 3,030 98.31%
EB1A 4,322 91.76% 2,870 88.91%
EB1B 793 98.51% 236 90.77%
Total 34,061 98.44% 6,136 93.39%

Client Testimonials

Words can not describe my level of satisfaction working with folks at WeGreened. They have a rigid systematic approach to submit cases to USCIS (i.e. EB2-NIW in my case).
No hitting around the bush during working with you. Straight forward and logical folks. They throw it into your face when you are wrong, accept it with big heart if they fail. Turn-back time to your questions is within 24 business hours with no doubt at every single step of the progress. Do not doubt for even a single second to choosing them, regardless of your geographical point.

- T. J., Affiliate Faculty

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

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

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

My EB1A was approved four days after USCIS received my documents. I'm very impressed by the professionalism and enthusiasm of NAmILG during preparation and filing of my case. The prompt approval of my case wouldn't be possible without the expertise and hard working of the attorneys of NAmILG.
One of the advantages of NAmILG I want to point out is they drafted all of the required letters, which saved huge amount of time for me. I'll definitely recommend to my friends who are looking for immigration attorneys.

- T. W., Postdoc

I'm so excited that my I-140 got approved within such a short time! I do think the North America Immigration Law Group did a great job. They are so patient to answer lots of my questions. The recommendation letters and petition letter are well prepared. That saved lots of my time! I will definitely recommend to my friends, as well as other people who prepare to apply for green card!

- X. L., Postdoctoral Fellow

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NIW Practice Comparison
North America Immigration Law Group vs. Other Immigration Law Firms
Legal Strategy
Drafting Method
Adjudication Insight
Approval or Refund Policy
Post-Filing Defense
(RFE, NOID, NOIR, Appeal)
Speed and Service
  • Flexible and client-centric.
  • We build the legal strategy around each client.
  • Analyzes credentials and evidence for the safest, most effective approach.
  • Zero templates and tailored arguments.
  • Each Petition Letter is drafted from scratch.
  • Reflects the client’s work and current USCIS trends.
  • Officer-specific intelligence.
  • Nearly 64,000 approvals give us extensive data. 
  • Anticipates and proactively addresses officer concerns.
  • Transparent and client-protective.
  • If a qualifying case is denied, clients get a refund of attorney fees.
  • No need for re-filing.
  • Included at no extra cost.
  • We handle RFEs, NOIDs, NOIRs, and appeals to the AAO when needed.
  • We stand behind our clients and our strategies.
  • Optimized for efficiency.
  • 24-hour response standard
  • Over 90% of client inquiries answered within one business day.
Other Immigration Law Firms
  • Rigid one-size-fits-all approach
  • Forces clients into preset models like multiple recommendation letters or no-letter policies, regardless of needs.
  • Uses static templates.
  • Fill-in-the-blank forms that appear similar across many petitions.
  • Often misses technical nuance.
  • Reactive approach.
  • Waits for an RFE or denial to understand officer expectations.
  • Limited or restrictive.
  • Refunds may require denial twice or clients must re-file.
  • Often billed separately or not pursued.
  • Some firms charge extra fees for RFEs, NOIDs, or appeals.
  • Slow or rushed.
  • Responses may take several days.
  • Filings may be rushed without proper quality control.

Success Stories: O1-A Approval Secured for an Assistant Professor from Canada working in the Field of Rheumatology

“It was great working with you on this O-1A application.”

Approved in 11 days

State of Residence: Texas

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Success Stories: EB2-NIW Approved for a Vietnamese Clinical Translational Researcher in Oncology Following a Successful Request for Evidence (RFE) Response

“Chen Immigration turned a challenging RFE into a successful outcome. Their professionalism and understanding of research-driven petitions exceeded my expectations. I am grateful for their work.”

Approved in 139 days

State of Residence: Vietnam

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Success Stories: Teaching and Research Assistant from China Secures NIW Approval Following RFE

“Thank you very much for your message and for all your support throughout the I-140 NIW petition process. I’m truly grateful for your assistance.”

Approved in 268 days

State of Residence: Texas

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Success Story: Fast-Track NIW Win! A Postdoctoral Fellow from China Achieves Approval via Premium Upgrade

“Letters are professional, and responses are fast and helpful. I am glad that I chose Chen Immigration Attorneys to prepare my I-140 case.”

Approved in 38 days

State of Residence: Alabama

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Success Stories: An Innovative PhD Student with Pioneering Work in Renewable Energy Technologies Secures EB2-NIW Approval

“I’m truly grateful for the outstanding support and guidance I received throughout my EB-2 NIW petition process. The team demonstrated deep knowledge, professionalism, and responsiveness at every stage. They prepared a strong petition that highlighted my background clearly and effectively, and I’m thankful to have had such dedicated experts on my side. I highly recommend their services to anyone pursuing an immigration path based on research or professional merit.”

Approved in 140 days

State of Residence: Canada

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Success Story: No RFE Issued: We Helped a Chinese Full Professor and Director in Advanced Computing Secure NIW Approval

“I am really very grateful for your work. It is a great experience. Thank you very much.”

Approved in 490 days

State of Residence: China

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Success Stories: Strategic Petition by NAILG Led to NIW Approval for Neurodevelopment Researcher Within 2 Months

“Thank you very much for helping with my NIW application. It is a great pleasure to work with your team.”

Approved in 44 days

State of Residence: Massachusetts

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Success Stories: Iranian PhD Student in Materials Science Secures NIW Approval without any RFE

“I am truly grateful for the outstanding support and guidance I received throughout my NIW petition process. The team demonstrated deep expertise in both immigration law and the scientific aspects of my case. They crafted a compelling petition that effectively highlighted the national importance of my research in materials science and biomedical implants. The entire process was smooth and transparent, and I was thrilled to receive approval without any RFE. I highly recommend their services to any researcher pursuing a similar path.”

Approved in 485 days

State of Residence: Canada

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Success Stories: Former Deputy Regional Director Earned NIW for Civil Engineering Contributions with NAILG Assistance

“I sincerely appreciate your attention, understanding, clear explanations, and prompt assistance throughout the preparation of my file. Your support has been invaluable, and I am truly grateful for your professionalism and efficiency. I hope for a positive outcome regarding my file and look forward to hearing the results in due course. Thank you once again for your efforts.”

Approved in 35 days

State of Residence: Texas

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Success Stories: EB2-NIW Approval for a Turkish Post-Doctoral Researcher in Artificial Intelligence, Thanks to NAILG’s Strategic Petition

“This is great news! Thank you for your assistance.”

Approved in 345 days

State of Residence: Florida

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Success Story: Our Expert Team Secured NIW Victory for a Postdoctoral Scholar From China

“Thank you very much for the assistance on my I-140 NIW case – I had a very good experience! I want to mention in particular that the reference letters and petition letter first drafts were of high quality, as both of my references noted. At the later stage, though, when there were multiple messages going on and one got missed and led to some delays, the lawyer was able to address it quickly once I followed up!”

Approved in 183 days

State of Residence: California

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Success Story: Without RFE, A Controls Engineer Achieves NIW Success with Our Expert Guidance

“I am pretty much satisfied by the efficiency, clear guidance, and easy communication with WeGreened.”

Approved in 347 days

State of Residence: Massachusetts

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Success Stories: Enhancing Consumer Experience Through AI: NIW Granted to Machine Learning Engineer

“Thank you so much for all the effort and dedication your team has put into my case. It has been a pleasure working with you, and I truly appreciate your support throughout the process. Thanks again for your excellent service, and I’d be happy to recommend your firm to others.”

Approved in 521 days

State of Residence: California

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Success Stories: EB1A Approved for a Chinese Senior Engineer Advancing Battery Technology with NAILG’s Guidance

“Thanks for sharing with me this great news! I really want to thank your team for helping me prepare all these documents throughout the entire process. You are so professional and experienced, I actually already recommended your firm to my friends/peers applying NIW/EB1A and would definitely continue doing so:)”

Approved in 279 days

State of Residence: California

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Success Stories: NIW Granted for Cardiology Fellow Improving Survival Outcomes in Cancer Patients

“Excellent service.”

Approved in 19 days

State of Residence: Ohio

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