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北美联合律师事务所(North America Immigration Law Group; Chen Immigration Law Associates)是一家从事美国移民的律师事务所,致力于代表来自美国50个州的公司、研究机构和个人,针对I-140移民申请提供法律服务。 我们专精于职业移民申请,并在下列移民类别保有高成功率的证明记录: EB2-NIW(国家利益豁免)EB1-A(杰出人才)EB1-B(杰出教授/研究员)

我们所累积的上万件I-140批准通知让我们对美国移民局的裁决趋势有着前所未有的洞察力
拥有上万笔的EB-1A,EB-1B和EB-2 NIW批准纪录,我们对USCIS判决I-140案件的方式有着丰富的第一手资料。 由于USCIS会不断改变对EB-1A,EB-1B和EB-2 NIW类别的裁决标准,我们事务所累积的庞大成功案例数据库能提供您前所未有且透彻的USCIS裁决趋势。 我们仔细分析我们所有案例的数据,将分析结果应用于为客户提供最新的建议,并随时调整我们的策略,使我们与美国不断变化的移民法规局势保持一致。 与我们合作,您可以随时得知重要的更新、策略和信息,让您可以对您的申请做出最明智的决定。

我们已经成功帮助过上万位背景和条件与您相似的客户
我们经手过众多的成功案例。无论您的条件、背景、专业领域、签证身份或国籍为何,我们极有可能已经帮助过数百名甚至数千名和您相似的客户。 我们的客户通常对我们能如此了解他们的研究和工作感到印象深刻。 我们的洞察力和理解来自于我们已经处理过许多与您条件类似的案例,这使我们有能力为每份申请量身订制最佳策略。

许多客户都是因为他人的推荐而与我们接洽
多年来,我们事务所吸引了许多新客户与我们合作,他们全都是基于我们的口碑、他人的推荐以及朋友和家人所分享的愉快合作经验而选择我们。 我们以我们的声誉自豪,也努力确保我们提供令人满意的绿卡申请服务给每位客户,让客户乐于与他们的朋友和同事分享经验。 这就是为何截至2025年,我们累积的批准案件总数已从2013年的600件成长至接近64,000件。

北美联合律师事务所 2020 年至 2024 年EB1 / NIW 案件批准数据

顾客见证

I had a great experience working with Chen Immigration Law Group. I applied for EB1A premium processing and the case was approved within 2 weeks without any RFE.
I was impressed with the quality of petition letter and the reference letters drafted by their team. Although my field is highly technical, the attorneys seemed highly knowledgeable and were able to present my research in a manner which was easy to understand, impressive and yet not 'over-selling'.
They went over my research/citations meticulously and were able to catch mistakes which honestly I would have missed if I was preparing my own case. They were also very prompt with replying to any questions I had during the process.
In short, I would strongly recommend them to all who want to get through the green card process without stress.

- P. J., Postdoctoral Researcher

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 would like to thank Chen Associates for their great help to get the approval for my I-140 petition. I had very pleasant experince working with them and I am highly satisfied with their work.They are very professional and have many experiences on preparing the documents for the immigrant petition. They know about the strength of your case and I receive the I-140 approval notice (NIW) just after 3 months. I also retained them for the I-485 service. I highly recommend your firm to scientists and research scholars. This is one of the best choices in my life.

- N. F., PhD

The best thing to happen to me in my GC process was my friend's recommendation of NAILG. They have been impeccable when it comes to keeping their promised time. They have also been giving me appropriate advice at appropriate times and have prepared a 1i140 packet that I could not have done myself in 100 years. I can't thank them enough.

- K. K., Research Scientist

Three of my friends who already got green card in EB1 category with the help of Chen immigration recommended me to contact this firm. They gave me free evaluation and approve and refund policy for my EB1B. I don’t know about other firm but I can say that I had a very good experience with Chen immigration. My attorney guided me on every single step and never got irritated even if asked same question several times. I got the answer of all my questions within 24 hours of time. As they promised, they wrote very strong letter of recommendation and drafted my petition within timeline. I was impressed the way they presented my case in the petition and as a results my case got approved in 7 days. I would strongly recommend Chen immigration to anyone trying to get green card under EB1 category. As I heard from my friends and I also experienced that they are the best with impressive team of attorneys. Thank you so much Chen immigration. It would not have been possible without your help. You are doing really good job. Keep it up !
Highly Recommended !!!!

- Dr. S. R., Assistant Professor

I would like to thank the Chen Immigration team for getting my I-140 (EB-1B) approved with no RFE. I choose premium processing and the case was approved in 13 days. The team is very professional and helpful in every step on your way to the approval. I had many questions from time to time during the preparation process and they were answered in a timely manner. I have also retained them for I-485 and hope that it will also be approved in a timely manner.

- A. K.

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Success Stories: Dental Scientist Approved for NIW with NAILG’s Legal Guidance

“Working with NAILG was a truly reassuring and empowering experience. From day one, their team demonstrated an exceptional understanding of both the legal process and the scientific value of my work. Thanks to their expertise, my NIW petition was approved in under two months with premium processing. I highly recommend NAILG to any researcher seeking immigration support — they are professional, knowledgeable, and genuinely committed to your success.”

Approved in 46 days

State of Residence: Minnesota

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Success Story: NIW Success! Iranian Postdoctoral Associate Earns Approval Through Our Tailored Approach and Team Expertise

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State of Residence: USA

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Success Story: Only 17 Days to EB1A Success! We Helped an Iranian Postdoctoral Scholar Get Approved via Premium Processing

“I want to extend my heartfelt thanks to the entire Chen Team for your incredible support, guidance, and expertise throughout this process. This wouldn’t have been possible without your dedication and thorough assistance. Congratulations to us all on this success!”

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State of Residence: Washington

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Success Stories: No RFE, 13-Day Approval: EB1A Granted to Postdoctoral Fellow in Computational Chemistry

“Every process was great for me. Many thanks for your kind support!”

Approved in 13 days

State of Residence: Texas

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Success Story: Without RFE, An India-Based Assistant Research Professor of Medicine Achieves NIW Success

“I truly appreciate your hard work and the team’s focus on detail. Your dedication gives me confidence in a positive outcome in my case. Thank you.”

Approved in 264 days

State of Residence: Indiana

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Success Story: Overcoming RFE! Our Firm Helped an Iraqi Senior Manager of Data Science Secure NIW Approval via Premium Processing

“I’m incredibly grateful to NAILG for guiding me through every step of the NIW petition process, especially when responding to the RFE. It meant a lot to have a team that understood both the technical depth and national importance of my work. Their attention to detail, responsiveness, and strategic framing of my case played a key role in the approval. From initial consultation to premium processing submission, they handled everything with professionalism and care. I highly recommend NAILG to any researcher or professional pursuing the NIW path.”

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State of Residence: North Carolina

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Success Stories: Healing Through Evidence: Nepalese Physician Secures EB-2 NIW with Premium Processing for Impactful Research in Internal Medicine

“Thank you so much for your help on this matter.”

Approved in 23 days

State of Residence: New York

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Success Story: An Iranian Mechanical Engineer Secured NIW Approval Quickly via Premium Processing with Our Expert Guidance

“I’m so incredibly happy to hear this wonderful news! Thank you so much for all your support and help throughout this process.”

Approved in 49 days

State of Residence: California

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Success Stories: Accelerated NIW Approval for Postdoctoral Research Fellow in Cutting-Edge Ophthalmic Imaging for Neurological Disorders

“Thank you so much for the wonderful news! I’m truly grateful for all your support throughout the I-140 NIW process. It has been a smooth and professional experience working with your team, and I appreciate your responsiveness and guidance at every step.”

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Success Story: We Helped a Postdoctoral Associate from Poland Secure NIW Approval with Our Expert Guidance

“Very prompt replies, professional interaction, clear instructions, and high-quality documents prepared by the attorneys assigned to my case. Thank you all!”

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Success Stories: NIW Granted for Breakthrough Research in Tumor Immunology and T Cell Modulation

“I am truly grateful to the North America Immigration Law Group (NAILG) for their professional and meticulous support throughout my EB-2 NIW petition process. They demonstrated a deep understanding of both immigration law and the scientific relevance of my research. What stood out most was their rigorous attention to detail—they carefully reviewed every word of my documents to ensure clarity, accuracy, and compliance. Every time I had a question, they responded promptly and professionally, which gave me great peace of mind.”

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Success Story: Strategic Win: A Chinese PhD Candidate & Optometrist Secures NIW Approval Through Premium Processing Upgrade

“Thank you very much for the wonderful news!”

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State of Residence: Canada

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Success Story: NIW Victory Without RFE! We Helped an Iranian Ph.D. student, Teaching Assistant & Part-time Graduate Researcher Secure Success

“Thank you so much for the happy news. I enjoyed collaborating with your firm, and I will definitely suggest your firm to other applicants.”

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Success Stories: Designing Defenses at the Molecular Level: A Microbiologist’s Extraordinary Journey to EB1A Approval

“Thank you, Chen Immigration Attorneys! You did an excellent job preparing my EB1A, I-140 application. The petition letter was drafted very nicely. Thank you for your support. I appreciate your efforts. I will recommend Chen Immigration to my friends in the future.”

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Success Story: Our Firm Assisted an Assistant Research Scientist from India to Achieve NIW Approval

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