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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

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

I cannot describe how excited I was when I got to know that my I-140 EB1A application has been approved. This simply could not be true if without the professional help from the North America Immigration Law Group. I don't think that my background conditions were safe for this application. But I knew that their preparation strategy made my case pretty strong. Although the application was long and challenging, it was very nice to work with their team during the whole process period. They impressed me with excellence, professionalism, and highly responsiveness. I do believe that their service is the best one in the immigration business.
Thank you so much for your effort to help me get through the EB1A application. I have recommended and will be happy to continue recommending your professional team to other people who really want to be greened.

- K. J., Electrical Engineer at New York State

I greatly appreciate Chen Immigration Law team for all the help and support, and for their very professional service, from the beginning to the end of my I-140 approval!<
My experience with them with filing my EB2-NIW petition steamily positive. They are professional, well-mannered, timely, and helped us steered through the complex petition process.
I talked with couple of others law firms but find out that Chen Immigration has refund policy, means that they do their homework according to your case before file the case. Which give me more confidence. At the end I figure out that the work very hard to prepare my case. I highly recommend to people if they want to apply for I-140.

- M. W. M, Enterprise Applications Administrator and Developer

Many thanks to Chen immigration & Attorneys for their great help, and I had a very good experience working with this professional attorney team, they prepared high quality recommendation letters and petition letters, provide guide in detail and response questions in time, I am lucky to have such a team to help me get the approval. I strongly recommended them to all who are seeking green card.

- Y. H., Postdoctoral Research Associate

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

The fact I like most about the Chen Immigration and Attorneys is their communication systems and responses. Throughout the whole application process until approval, I had lots of questions in different phases regarding case file preparation, EAD cards, travel with AP, service request etc. What I needed to do was to leave a message in the case management system and got detailed and satisfactory responses in a timely manner.
Their services ranging from the free evaluation at the first day to case preparation and drafting recommendation and petition letters have exhibited high professionalism and standard. I would suggest anyone to retain them for his/her I140 and I485 case preparation.

- S. A., Postdoctoral Researcher

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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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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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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!”

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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.”

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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

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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.”

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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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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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