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

I am thankful to Victoria Chen and her immigration team for making this happen. I got my I-140 approved in EB1A category. This group is highly professional and I am very satisfied with the services. The reply to all of my questions were prompt. The team is extremely meticulous with documentation and drafting of letters, especially the petition. I strongly recommend North American Immigration Law group for US immigration!!!!

- P., Neuroradiologist and Research Scientist

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

I will definitely recommend North America Immigration Law Group to all my friends who is seeking for immigration services. I am very, very impressed by their excellent service. The entire process is very professional and they have been responsive and responsible. They will do their best in every little detail to make you case stronger. Their service and attitude towards every case define their high reputation.

- B. H., Postdoctoral Research Fellow

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

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

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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 Story: O1-A Approved in Just 17 Days! Custom Strategy Secures Win for A Chinese Post-Doctoral Fellow via Premium Processing

“Great. Thank you for all your effort.”

Approved in 17 days

State of Residence: South Carolina

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Success Stories: Collaborative Win: NAILG and Postdoctoral Research Associate in Materials Engineering Achieved NIW Approval

“I’m happy with the service. Thanks.”

Approved in 40 days

State of Residence: Utah

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Success Stories: NAILG Helped a Senior Advisor from India to Obtain NIW Approval in the Field of Computational Chemistry in 1 Month, 21 Days only

“Great news! Thank you for your support and guidance in this important process. The team was prompt and very diligent in preparing and reviewing the material and did a nice job explaining the expectations and best practices to help ensure the application is as smooth as possible.”

Approved in 51 days

State of Residence: Indiana

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Success Story: We Helped an Expert in Applied Entomology Secure NIW Approval with Confidence

“With the expert guidance of Chen Immigration Law Associates, I successfully obtained my EB-2 (NIW) approval (priority date: May 21, 2024, decision date: March 18, 2025). The firm’s deep understanding of the petition process, professionalism, and prompt responses made the entire experience smooth and efficient.
 
I am grateful to the Chen team for their outstanding support and highly recommend them to researchers and professionals seeking U.S. immigration under the NIW categories.”

Approved in 295 days

State of Residence: China

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Success Story: Senior Software Developer from China Achieves NIW Victory Through Our Assistance

“I was amazed by the professionalism and strategic approach of the legal team, which made the complex NIW process feel manageable and clear. Their expert guidance was instrumental in the successful approval of my case, and I am grateful for their invaluable assistance in achieving this goal.”

Approved in 295 days

State of Residence: New York

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Success Stories: A Dual Triumph in U.S. Immigration: Elevating Population Health Through Data and Digital Innovation

“Many thanks again for your professionalism and great help. I will definitely refer to my colleagues and friends. I would also like to specifically thank my attorney for his outstanding skills and help with my case. I really appreciate him.”

Approved in 69 days

State of Residence: Singapore

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Success Stories: Turning Data into Public Health Insight: EB2-NIW Approved for AI-Powered Health Researcher

“This is great news! I’d like to express my sincere thanks to the team and attorneys for all the help and support during this long process. Navigating the application could be intimidating at times. Your clear instructions and detailed feedback helped me immensely along the way.”

Approved in 200 days

State of Residence: Texas

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Success Story: From Neuroimmune Signals to National Impact — Dual I-140 Approvals for a Biomedical Innovator

“Thank you so much for your invaluable assistance in securing my approvals.”

Approved in 112 days

State of Residence: United Kingdom

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Success Story: O1-A Approved in Just 14 Days! A Postdoctoral Research Associate Secures Success with NAILG’s Team and Premium Processing

“Thank you so much for the wonderful news! It was a real pleasure working with you!”

Approved in 14 days

State of Residence: Illinois

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Success Story: NIW Success for Chinese Graduate Student – Approved with Our Tailored Strategy and Premium Processing

“It’s been a great experience working with your firm, and I really appreciate all the help along the way! The expertise and prompt responses are exceptional, definitely would recommend to anyone who is interested in applying for a green card!”

Approved in 44 days

State of Residence: Massachusetts

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Success Stories: Radiologist Secured NIW for Pioneering Research on Safer, Faster Imaging Techniques

“Thank you very much for your help and support from the free evaluation till my I-140 approval.”

Approved in 131 days

State of Residence: New York

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Success Stories: From ICU Data to Lifesaving Predictions: How One Researcher Is Using Algorithms to Revolutionize Critical Care

“Thank you for your great work and kind assistance throughout the process. The attorney is very helpful and prompt in response. Overall, it’s a satisfying experience!”

Approved in 45 days

State of Residence: United Kingdom

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Success Story: With Strategic Filing, Our Expert Team Assisted a China Associate Research Scientist Secure NIW Approval

“I’m so thankful to NAILG for helping me get my NIW petition approved. From the very beginning, they were patient and incredibly knowledgeable. I never felt alone in the process—they guided me step by step, answered all my questions quickly, and made everything feel manageable. I truly appreciate their hard work and care, and I wouldn’t have been able to do this without them.”

Approved in 476 days

State of Residence: New Jersey

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NIW Approved for Inorganic Chemist Advancing Rare-Earth Elements Extraction and Nuclear Waste Remediation

“Thank you so much!!! I really appreciate your help!”

Approved in 490 days

State of Residence: Michigan

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Success Stories: Medical Scientist from Nepal in Biomedical Science Secures EB2-NIW Approval, Overcoming RFE Challenge

“This is fantastic news! I want to extend my sincere thanks to your entire team for their outstanding assistance with my I-140 application and the subsequent I-140 RFE. I truly believe my case wouldn’t have been approved without the dedication and expertise of your professionals.”

Approved in 169 days

State of Residence: Florida

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