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

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'm very happy with all the work and advice Chen Immigration Team have put into my NIW application. The responses were always timely, the letters drafted were polite, well-structured and timely. When I got my RFE, I was worried, but with the help of the attorneys working with me, the answer to the RFE lead to approval.
Not only do the members of the team work extremely hard and with highest professionalism, they also show that they believe in their clients, are able to emphasize all the achievements better than I ever could, and they genuinely care.
Thank you so very much!
I cannot be happier with everything you've done for me!

- M, Postpoc

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

My I-140 (NIW) was approved this week!
I was fortunate to come across Chen immigration when I started looking into my options for green card. I quickly realized they are extremely professional and would handle my case at a personal level. Indeed, over the last 1 year they have performed beyond my expectations.
Chen immigration team gave me a free evaluation after assessing my portfolio. Their timing for my case has been impeccable at every step. The lawyers have worked with me as a team. Communication with the whole firm has just been outstanding. I would recommend Chen Immigration extremely highly to all my friends and anyone who is in my shoes and looking into the process for Green card.

- M. R., Physician

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'd like to thank Chen Immigration and attorneys for the great job they did on my I-140 application for NIW. They put together a compelling petition letter with appropriate exhibitions which resulted in my I-140 approval only in 72 days at Nebraska Service Center (the average wait time at this center is more than 10 months now). The team at this firm are experts and experienced. They meticulously prepare all the required documents and effectively communicate with the client. They deliver on time & with the highest quality. I have recommended them to my friends who would like to apply for NIW or EB1A. Chen group knows what they are doing and they are the best, go with them!

- H. C., Postdoctoral Scholar

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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: A Chinese Power Systems Research Engineer Secures EB2-NIW Approval in Just Over One Month via the Premium Processing

“Thank you very much for your help! Really excited that my case got approved without RFE. Thank you so much!”

Approved in 37 days

State of Residence: Washington

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Success Stories: Driving Innovation in Computer Vision: EB2-NIW Approved for Autonomous Systems Researcher

“The service is perfect for me so far, and thank you for your help all the way. It’s really a great experience working with you.”

Approved in 503 days

State of Residence: New York

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Success Stories: Resilience Rewarded: NAILG Secured EB1A Approval in Just 19 Days for Critical Care Expert After Prior Denial

“North America Immigration Law Group attorneys and team were very proficient and supportive throughout the process. They always carefully evaluated the materials that I provided and drafted a very strong petition letter.”

Approved in 19 days

State of Residence: Massachusetts

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Success Story: Fast-Track NIW Success! Indian Research Associate Scientist Approved with Our Expert Support and Premium Processing Service

“Thank you very much for all your help through the NIW process. An approval without an RFE seems to be a rarity these days, and I was happy to receive the decision well before the 45-day deadlines. This talks to the strength and clarity in the petition. I am so excited to receive the approval and really appreciate your expert advice and assistance with the filing.”

Approved in 44 days

State of Residence: Pennsylvania

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Success Stories: RFE Overcome, Petition Approved: NAILG Guided Principal Architect in Computer Science to EB-1A Approval

“I want to express my heartfelt gratitude for all the guidance and support during my EB1A I-140 petition process, notably for the thorough assistance in responding to the RFE. I sincerely appreciate the care and diligence. Thank you very much!”

Approved in 123 days

State of Residence: California

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Success Stories: Redefining Cardiac Care: EB1A Approved for Clinician-Scientist Advancing Heart Failure and Transplant Outcomes

“Would like to take this opportunity to thank you and your team for the approval. Your team was very professional from the beginning and made this process so easy. I appreciate the thoroughness and the constant feedback while building the application. I would strongly recommend your services to any of my colleagues without any hesitation.”

Approved in 17 days

State of Residence: Washington

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Success Story: Thanks to Our Assistance, An Iranian Researcher Wins NIW & EB1A – EB1A Approved in Just 15 Days!

“Thank you so much for all your work and support.”

Approved in 15 days

State of Residence: Mississippi

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Success Stories: Successful EB2-NIW Approval for a Vietnamese Research Scientist/Manager in Biochemical Engineering

“Thank you so much for the congratulations and for all the support throughout the process! I truly appreciate your professionalism and guidance.”

Approved in 523 days

State of Residence: South Korea

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Success Stories: Advancing Human-Centered Technologies: Postdoctoral Fellow Secures EB1A and NIW Approvals Despite RFE

“Thank you so much for your tremendous help in my petitions for NIW and EB1A.”

Approved in 16 days

State of Residence: Georgia

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Success Stories: Research at the Crossroads of Innovation and Impact: A National Interest Waiver Win in Chemical Engineering

“I have a great experience in preparing my I-140 petition and corresponding reference letters. Additionally, I always received the answers to my questions within 24 hours. All the members are very professional in responding to any of my queries.”

Approved in 519 days

State of Residence: New York

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Success Stories: NAILG Guides Chinese Data Scientist in Technology Law to EB1A Success Despite RFE Challenge

“WeGreened is definitely the best attorneys in this industry. They are professional, patient, and incredibly knowledgeable. I’m thrilled with the outcome and very thankful for their help. I wouldn’t have been able to do this without them.”

Approved in 105 days

State of Residence: Washington

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Success Story: Nigerian Expert Receives Both EB1A and NIW Approvals with Our Proven Strategy via Premium Processing Services Even After RFE for EB1A

“Thank you for your assistance and guidance throughout the process of my I-140 application.”

Approved in 120 days

State of Residence: United Kingdom

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Success Stories: Transforming Access: Higher Education PhD Student Secured NIW with NAILG’s Guidance

“Thank you again for your excellent support throughout my I-140 petition process. I’m truly grateful for your expertise and professionalism, which contributed greatly to the success of my case.”

Approved in 491 days

State of Residence: Illinois

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Success Stories: Bangladeshi Materials Scientist Earns EB2-NIW Approval in Just Two Months with Premium Processing

“Thank you so much! You made my day!”

Approved in 60 days

State of Residence: Bangladesh

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Success Story: No RFE Issues, NIW Approved for Iranian Postdoctoral Fellow Thanks to Our Assistance

“Thank you for your support and thank you for helping me have a successful case.”

Approved in 800 days

State of Residence: United Kingdom

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