North America Immigration Law Group - specialized in NIW (National Interest Waiver) and EB1 Greencard

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）和 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件成长至超过61,000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

We just wanted to thank Chen Immigration for their help during this process. They were absolutely amazing. They responded to all our questions with such detail and were thorough in their examination of all our supporting documentation. They were quick with their responses and always stuck to the timeline. They provided us amazing templates for all out letters of recommendation and overall were exceptional. Highly competent and would strongly recommend to anybody looking for immigration assistance.

- G. B.

I highly appreciate the outstanding work and help provided by North America Immigration Law group to me during my I-140 petition. They have very good understanding of the case and even easily understood my research and full profile to make the petition. There response before committed time is really appreciable. I found that the case taken by them is a big assurance that it is going to be approved. My EB1A- I-140 got approved very quickly even the day after the premium processing application was received without any RFE or difficulty.
I highly recommend Chen Immigration Team for green card petitions. Thanks a lot for their big help.

- S. S., Group Scientist

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

My EB1B I-140 got approved within 10 business days. I have worked with Chen Immigration Team from North America Immigration Law Group for 4 months before submitting my application. They were extremely thorough, meticulous and prompt with their service. They drafted all the necessary letters (employment verification, recommendation letters and petition letter) within the agreed timeline. They helped me to choose potential recommenders and were always quick to answer any of my questions. They are very professional and definitely know what they are doing. I will definitely recommend Chen Immigration Team to anyone who is planning to apply for Permanent Residency Status in USA.

- B., Scientist

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 had worked with Chen Immigration group for my O-1A visa first and then retained with them for my I-140 petition under EB1A category. Their services are rapid and prompt with an affordable fee structure. They also have very high success rate of approvals. They have taken utmost care on all the required documentation. They usually respond to my questions in 1 business day. I highly recommend Chen Immigration group for my fellow colleagues for their petitions under various categories.

- R. V., Chief Technology Officer

Success Stories: NIW Petition Approved in Under a Month for Visiting Postdoctoral Fellow’s Vital Work in Drug Resistance Mechanisms

“I worked with Chen Immigration & Attorneys for my NIW-EB2 petition, and it was approved without any RFEs. Their team consistently responded to my questions promptly and provided detailed, informative answers. All documents were professionally drafted, and they made the entire process smooth and stress-free. I would gladly recommend Chen Immigration & Attorneys to anyone interested in applying for a green card.”

Approved in 26 days

State of Residence: Maryland

Success Stories: Mapping Biodiversity for a Healthier Planet: How One Ecologist’s Research Earned National Interest Recognition

“I am thrilled that my EB-2 NIW petition has been approved, allowing me to continue my critical research in biodiversity conservation in the United States. This achievement would not have been possible without the exceptional guidance and expertise of Chen Immigration Law Associates.

As an ecologist dedicated to preserving fragile ecosystems and endangered species, I needed a legal team that truly understood the significance of my work and could compellingly present its national importance. Chen Immigration Law Associates meticulously documented my contributions—from peer-reviewed publications to real-world conservation impact—crafting a petition that clearly demonstrated how my research benefits the U.S.

Their deep knowledge of NIW criteria, strategic approach to highlighting my field’s urgency (particularly in addressing habitat fragmentation and biodiversity loss), and attention to detail were invaluable. They transformed complex ecological concepts into persuasive legal arguments, while independent recommendation letters from global experts further reinforced my case.

I wholeheartedly recommend Chen Immigration Law Associates to researchers and professionals seeking NIW or EB-1 visas. Their ability to bridge scientific innovation with immigration law is unparalleled.”

Approved in 441 days

State of Residence: China

Success Story: NIW Approved Despite RFE! We Helped a Ghanaian Graduate Research Assistant Secure Success

“My overall experience with Chen’s Immigration Attorney has been good. The web portal is super helpful, and the assigned attorney answered my questions very well and on time. The assigned attorney worked closely with me throughout the entire process to make my application a success. I am immensely grateful to the Chen Immigration Team for the professional and exceptional work. Thank you!”

Approved in 368 days

State of Residence: Connecticut

Success Stories: Navigating RFE: NAILG Guided Expert Through NIW and EB-1A Approvals in Atmospheric Science

“Thank you for providing such professional and excellent service. I will not hesitate to recommend your services to my friends and colleagues. I will also contact your law office again when I need any law services in the future.”

Approved in 102 days

State of Residence: Washington

Success Stories: Teaching Robots to Feel: EB-2 NIW Approved for Researcher Advancing Emotion-Aware AI

“Wonderful professional service! Overall, I must admit that it has been an impressive professional service offered by Chen Immigration.”

Approved in 313 days

State of Residence: Germany

Success Story: NIW Approved Without RFE! Pakistani Associate Professor Achieves Success with Our Strategic Support

“Thank you so much for sharing such wonderful and exciting news with me. I’m absolutely thrilled and incredibly grateful! I truly appreciate the exceptional professional support you provided throughout every stage of my NIW immigration process. From the very beginning, your guidance, clear communication, and attention to detail gave me confidence and peace of mind. Your expertise helped simplify what could have been an overwhelming process, and your responsiveness and encouragement made a significant difference. I especially want to acknowledge your consistent dedication, timely updates, and thoughtful handling of every part of my case. Your role in this successful outcome has been invaluable, and I am sincerely thankful for your efforts.”

Approved in 482 days

State of Residence: Pakistan

Success Story: An Indian Assistant Professor Approved NIW Victory Smoothly with Premium Processing Advantage, Also Thanks to Our Expert Support

“Thank you very much. I had a great experience working with you, and you did an excellent job.”

Approved in 42 days

State of Residence: -

Success Stories: From NIW to EB-1A: NAILG Delivers Immigration Success for PhD Candidate in Computer Science

“Great service! My attorney is also helpful and responds to my questions quickly. Thank you!”

Approved in 458 days

State of Residence: New York

Success Story: Powering Forward — Dual Visa Success for a Research Engineer in the field of Mechanical Engineering

“I’m writing to express my deepest gratitude for your support throughout my entire immigration journey. Starting from my J-1 waiver, to the O-1A petition, and now the successful approval of my EB-1A, you have been with me every step of the way. Your professionalism, dedication, and patience have meant the world to me. I couldn’t have made it this far without your guidance and support. Thank you so much — truly and sincerely.”

Approved in 54 days

State of Residence: California

NIW Approved for a Systems Engineer Advancing AI-Driven Biomanufacturing and Sustainable Food Production Research Following RFE

“My attorney did an excellent job preparing my I-140 petition. Their attention to detail, responsiveness, and expertise made the entire process smooth and stress-free. I highly recommend their services.”

Approved in 203 days

State of Residence: -

Success Story: EB1A Approved Despite RFE! Dual NIW + EB1A Victory for Indian Medical Director via Premium Processing

“It has been a pleasure working with Chen on my EB1A NIW journey. I heard about Chen years ago and hence had the confidence to go with them. I liked their meticulous attitude in preparing the case draft and collecting evidence. Chen has a ton of experience with EB1 and NIW categories. Chen has also been prompt in responding to my queries. I was told the officer who had issued my RFE had only a 30% approval rate. I was nervous due to the recent significant drop in the EB1A approval rate. However, Chen was a great help throughout the process, and I am satisfied with her service. I wish them all the best and endorse her for physicians willing to file an EB1A NIW petition.”

Approved in 15 days

State of Residence: Illinois

Success Stories: An Iranian PhD Candidate’s Path to Success: EB2-NIW Petition Approved with No Request for Evidence

“I had a very positive experience working with the North America Immigration Law Group on my NIW petition. They were consistently responsive (i.e., every question I had was answered within 24 hours), and they followed through on every step they outlined from the beginning, which made me find them trustworthy. After I signed the agreement, they provided access to a well-organized client webpage that made it easy to keep track of tasks, documents, and deadlines. The whole process felt structured and manageable thanks to that system.”

Approved in 562 days

State of Residence: Illinois

Success Stories: NAILG Navigated NIW Petition for Artificial Intelligence and Machine Learning Researcher in Computer Science to Approval

“Thanks for quality service, advice, and efforts.”

Approved in 498 days

State of Residence: Michigan

Success Story: NIW Approved Despite RFE! Bangladeshi PhD Student Succeeds with Our Tailored Strategy

“I had a great experience working with the Chen Immigration team. They were always prompt in answering my questions. I especially want to thank Alexander Bennett for preparing a strong RFE response that led to the approval of my EB2 NIW petition. I highly recommend the Chen Immigration team.”

Approved in 555 days

State of Residence: Pennsylvania

Success Story: In Just 15 Days, A Turkish Hospitalist Achieves NIW Approval via Premium Processing, Also Thanks to Our Assistance

“I wish I had applied earlier, especially given the current priority dates. Many of my residency colleagues recommended Chen Immigration for their professionalism and strong track record of success. They provided thoughtful guidance and helped me present my past and current work in a way that allowed USCIS to clearly understand its significance. The team was kind, responsive, and open to feedback—always willing to incorporate my suggestions into the drafts. It was an important step in my career, and I felt a great sense of relief throughout the process thanks to their support. I’m truly grateful for their help.”